KR20240043385A - Greenhouse complex thermal environment control system using waste heat - Google Patents

Abstract

The present invention can reduce energy costs by performing heating and cooling using the waste heat of the greenhouse, and can effectively control temperature and humidity for heating and cooling inside the greenhouse without opening the measuring and ceiling windows. This is about the complex thermal environment control system of the greenhouse used.
The complex thermal environment control system for a greenhouse using waste heat according to the present invention includes a greenhouse configured to allow sunlight to enter; An internal air moving part having an internal air inlet through which the internal air of the greenhouse flows in and an internal air outlet through which the internal air flowing into the internal air inlet is discharged; a fluid heat exchange treatment tank provided with an internal air receiving chamber for receiving internal air discharged from the internal air discharge unit, and a water receiving chamber partitioned from the internal air receiving chamber for receiving water; Internal air heat exchange means for performing heat exchange between the internal air contained in the internal air receiving chamber and the water contained in the water containing chamber; a heat pump device disposed to recover heat from the water in the water storage chamber; a heat storage unit disposed to store heat recovered by the heat pump device; a supply air moving unit that supplies heat exchange air from the internal air receiving chamber that has undergone a heat exchange process of the internal air heat exchange means to the greenhouse; and a complex thermal environment control unit installed in the supply air moving unit to convert the heat exchange air into supply air having a set temperature and humidity.

Description

Greenhouse complex thermal environment control system using waste heat {GREENHOUSE COMPLEX THERMAL ENVIRONMENT CONTROL SYSTEM USING WASTE HEAT}

The present invention relates to a complex thermal environment control system for a greenhouse using waste heat, and more specifically, to reduce energy costs by performing cooling and heating using the waste heat of the greenhouse, and to heat the interior of the greenhouse without opening the side windows and ceiling windows. and a complex thermal environment control system for a greenhouse using waste heat that can effectively control temperature and humidity for cooling.

In general, agricultural crops are generally grown in the open field by selecting crops suitable for soil quality, climatic conditions, season, etc. However, due to the climate characteristics of Korea, which has four distinct seasons, crop cultivation in the open field is limited to a certain period of time. However, the reality is that the demand for fresh agricultural products continues throughout the year as the income level of the people increases day by day. In recent years, abnormal temperatures have occurred frequently. Uncertainty about domestic agricultural supply and demand and price fluctuations is increasing.

Accordingly, the facility horticulture industry is gradually expanding and various research and developments are being conducted as a way to reduce uncertainty due to abnormal temperatures and meet the year-round demand of consumers.

For example, facility horticulture involves planting crops in a cultivation area constructed inside a greenhouse such as a glass greenhouse or greenhouse, and carrying out the cultivation process while managing the environment to maintain conditions such as temperature, humidity, and CO ₂ that are ideal for growing crops. do.

A greenhouse is composed of a greenhouse frame constructed to perform the function of a normal skeleton using longitudinal and lateral members, and a light-transmitting surface made of glass or vinyl sheet installed on the greenhouse frame. The inside of the greenhouse is temperature, To control humidity and _CO2 , heating and cooling devices, cooling piping, humidity control devices, and carbon dioxide supply devices are installed.

In addition, a greenhouse is a device for cultivating crops at a location higher than the ground level in consideration of workability, cultivation efficiency, and labor cost reduction, and may be equipped with facilities commonly referred to as high-soil cultivation devices to cultivate crops.

However, in the general greenhouse as described above, when performing the cultivation process, temperature, humidity, CO ₂ control, etc. must be controlled not only in the area where crops are planted, but also in the entire interior space, resulting in a significant waste of cost and excessively long adjustment time. The downside is that immediate response is difficult, making crop cultivation less efficient.

In addition, general greenhouses increase production costs due to excessive heating and cooling costs in regions with high temperature summers and long winters, such as Korea, which is a factor in weakening agricultural competitiveness.

In particular, heating and cooling equipment mainly uses fossil fuels and is completely dependent on imports, so the burden on farms due to fluctuations in the price of crude oil is very serious. Recently, alternative energy sources such as geothermal heat, solar energy, and wind power have been used. Although attempts are being made, they are in the research and development stage and practical application is insufficient.

Currently, indoor horticulture in Korea mainly uses diesel and heavy oil as heating fuel, and heating costs account for 30-40% of facility crop management costs, compared to 20% in Japan, 14-15% in the Netherlands, and 10% in Israel. Comparatively, the share of heating costs in facility horticulture in Korea is very high.

As an alternative to solving this problem, geothermal recovery systems, large-scale solar power generation systems, and wind power generation systems can be applied as alternative energy for driving air conditioning and heating systems, but appropriate geographical and environmental conditions must be met to apply them. Not only does it require large-scale facility investment costs, but there are limitations that make it impossible for unit farms to easily apply it.

In addition, since the internal temperature of greenhouses rises to a high temperature due to the radiant energy of the sun, such as during daytime in the summer or winter, there is a problem of further increasing operating costs due to an increase in cooling load to lower the temperature to an appropriate growth temperature for plants.

In addition, if the temperature inside the greenhouse becomes excessive, it is necessary to open the measuring and ceiling windows. However, in this case, the CO ₂ applied to the greenhouse leaks to the outside and is wasted, which has the disadvantage of lowering the fertilization effect and increasing management costs. However, it has the disadvantage of not being able to accurately control humidity.

Korean Patent Publication No. 10-2010-0134496 “Cooling and heating device using heat pump” Korean Patent No. 10-0915701 “House cooling and heating device using geothermal heat pump” Korean Patent No. 10-1128173 “Heat self-sufficient complex cooling and heating system and heat self-sufficient complex heating and cooling system using solar energy”

The present invention was proposed in light of the above contents, and its purpose is to provide a complex thermal environment control system for a greenhouse using waste heat that can reduce energy costs by performing cooling and heating using the waste heat of the greenhouse.

Another object of the present invention is to provide a complex thermal environment control system for a greenhouse using waste heat that can effectively control temperature and humidity for heating and cooling inside the greenhouse without opening the side windows and ceiling windows.

Another object of the present invention is to provide a complex thermal environment control system for a greenhouse using waste heat that effectively performs temperature control and humidity control by stably producing cold water without causing freezing due to low-temperature outdoor air. .

In order to achieve the above object, a complex thermal environment control system for a greenhouse using waste heat according to the present invention includes a greenhouse configured to allow sunlight to enter; An internal air moving part having an internal air inlet through which the internal air of the greenhouse flows in and an internal air outlet through which the internal air flowing into the internal air inlet is discharged; a fluid heat exchange treatment tank provided with an internal air receiving chamber for receiving internal air discharged from the internal air discharge unit, and a water receiving chamber partitioned from the internal air receiving chamber for receiving water; Internal air heat exchange means for performing heat exchange between the internal air contained in the internal air receiving chamber and the water contained in the water containing chamber; a heat pump device disposed to recover heat from the water in the water storage chamber; a heat storage unit disposed to store heat recovered by the heat pump device; a supply air moving unit that supplies heat exchange air from the internal air receiving chamber that has undergone a heat exchange process of the internal air heat exchange means to the greenhouse; and a complex thermal environment control unit installed in the supply air moving unit to convert the heat exchange air into supply air having a set temperature and humidity.

The fluid heat exchange treatment tank includes an internal air chamber portion in which the internal air receiving chamber is provided, an internal air inlet connected to the internal air discharge unit, and an internal air outlet connected to the supply air moving unit are formed; a water chamber portion disposed in contact with the internal air chamber portion, the water receiving chamber provided therein, a water discharge port to which a water supply line is connected, and a water inlet port to which a heat storage recovery line is connected; and a heat exchange means installation portion provided on a boundary wall of the inner air chamber portion and the water chamber portion so that the inner air heat exchange means is installed.

The internal air movement unit is disposed in the upper part of the greenhouse and extends to be bent downward in the air intake section toward the air intake section provided with the internal air inlet, and the fluid heat exchange treatment tank, and has the internal air discharge section formed at an end. It may be composed of an air inlet duct having a section.

The supply air moving unit may be composed of an air supply duct having a connection section connected to the internal air outlet, and an air supply section connected to the connection section and disposed in the greenhouse and having an outlet.

In addition, the greenhouse complex thermal environment control system using waste heat according to the present invention may be provided with an internal air intake fan disposed in the air inlet duct and a heat exchange air intake fan installed in the supply air moving unit.

The complex thermal environment control unit includes an air passage part through which air moves; Air cooling means for cooling and controlling humidity of the air passing through the air passage unit; and an air heating means for controlling the temperature of the air passing through the air passage unit.

The air passage part may be composed of an air passage box connected to the supply air moving part.

The air cooling means may include a cold water chamber formed on one side of the ventilation passage enclosure and through which cold water circulates, and a cooling control heat exchange means installed between the cold water chamber and the air passage portion.

The air heating means may include a hot water chamber formed on the other side of the ventilation passage box and circulating hot water, and a heating control heat exchange means installed between the hot water chamber and the air passage unit.

The hot water chamber may be connected to a temperature-controlled water circulation line to circulate hot water, and the cold water chamber may be connected to a cold water circulation line to circulate cold water.

The cooling control heat exchange means is a vibrating heat pipe in which one side is immersed in the cold water of the cold water chamber and the other side is disposed in the air passage to transfer the cold air of the cold water supplied by evaporation and condensation of the working fluid to the air without external power. Can be configured,

The heating control heat exchange means is a vibrating heat pipe with one side immersed in the hot water of the hot water chamber and the other side disposed in the air passage to transfer the heat of hot water supplied by evaporation and condensation of the working fluid to the air without external power. It can be configured.

The internal air heat exchange means may be composed of a vibrating heat pipe with one side exposed to the internal air receiving chamber and the other side immersed in the water receiving chamber to transfer the heat of the internal air to the water by evaporation and condensation of the working fluid without external power. You can.

The air passage enclosure includes a cooling/humidity control room in which air humidity control is performed, a temperature control room in which air temperature control is performed, and a temperature and humidity room connection part connecting the cooling/humidity control room and the temperature control room. The cooling/humidity control room may be arranged in the air entry direction so that the temperature is controlled and supplied after the humidity of the air is controlled, and the temperature and humidity room connection portion and the temperature control room may be arranged in succession.

The temperature-controlled water circulation line may include a temperature-controlled water supply line connected to the hot water chamber to supply hot water, and a temperature-controlled water recovery line connected to recover hot water that has undergone a heat exchange process via the hot water chamber. You can.

The cold water circulation line may include a cold water supply line connected to the cold water chamber to supply cold water, and a cold water recovery line connected to recover cold water that has undergone a heat exchange process via the cold water chamber.

In addition, the complex thermal environment control unit includes a temperature-controlled water circulation pump installed in the temperature-controlled water circulation line; And a cold water circulation pump installed in the cold water circulation line.

The cold water chamber may be formed with a cold water path guide partition wall so that incoming cold water is discharged while forming a 'U' shaped flow path, and one side of the vibrating heat pipe applied as the cooling control heat exchange means is formed by the cold water path guide partition wall. It may be placed in one partitioned compartment.

The hot water chamber is formed with a hot water path guide partition wall so that the incoming hot water is discharged while forming a 'U' shaped flow path, and one side of the vibrating heat pipe applied as the heating control heat exchange means is partitioned by the hot water path guide partition wall. It may be placed in one compartment.

Meanwhile, the complex thermal environment control system for a greenhouse using waste heat according to the present invention may further include a cold water supply unit configured to supply cold water to the complex thermal environment control unit.

The cold water supply unit includes a cold water storage unit in which cold water is stored; and a cold water generator that cools the water in the cold water storage unit. A cold water production tank equipped with a cold water production chamber in which water is received; and an external air heat exchange means that performs heat exchange between the external air contained in the external air receiving chamber and the water contained in the cold water generating chamber.

The cold water supply unit includes a cold water production water supply line connected to supply water from the cold water storage unit to the cold water production chamber; a cold water discharge line connected so that cold water generated via the cold water generation chamber is recovered from the cold water storage unit; and a cold water production pump connected to the cold water production water supply line or the cold water discharge line.

The external air heat exchange means is disposed on one side in the external air receiving chamber and on the other side in the cold water generating chamber to transfer the cold air of the external air to the water filled in the cold water generating chamber by evaporation and condensation of the working fluid without external power. It may be composed of a vibrating heat pipe.

The cold water supply unit includes a cold water production room temperature detection unit that detects the temperature of the cold water production room; And it may further include a cold water storage unit temperature sensing unit that detects the temperature of the cold water storage unit.

The cold water supply unit controls the operation of the cold water generation pump so that the cold water temperature of the cold water storage unit is a set temperature based on the signal detected by the cold water storage unit temperature detection unit and the cold water production room temperature detection unit, A cold water production control unit that operates the cold water production pump to perform a control operation to prevent freezing of the cold water production room when the temperature of the water detected by the cold water production room temperature detection unit is below the set temperature. It may be configured to include; .

The cold water supply unit includes a cold water generator case formed to surround the outside of the external air receiving chamber; External air is introduced into the external air receiving chamber under the control of the cold water generation control unit so that the cold water temperature of the cold water storage unit is at a set temperature based on the signal detected by the cold water storage unit temperature detection unit and the cold water production room temperature detection unit. an external air blowing fan operated to and an external temperature sensing unit that detects the temperature of the external air receiving chamber.

And the cold water generation control unit is configured to perform a control operation to stop the operation of the external air blowing fan when the temperature difference detected based on the detection signal detected by the external air temperature detection unit and the cold water production room temperature detection unit is smaller than a set range. It can be.

According to the greenhouse complex thermal environment control system using waste heat according to the present invention, the high temperature air, which is waste heat generated in the greenhouse by solar radiant energy, is cooled by the internal air heat exchange means in the internal air chamber part of the fluid heat exchange treatment tank. It can be used in circulation and re-supplied to the greenhouse, so there is no need to operate a separate air-conditioning device, and waste heat can be stored and reused, which has the effect of reducing energy costs for cooling and heating.

According to the complex thermal environment control system for a greenhouse using waste heat according to the present invention, humidity can be controlled without opening the side windows and ceiling windows, so the fertilization effect can be maintained by preventing external leakage of fertilized CO ₂ due to opening of the side windows and ceiling windows. Not only can it reduce management costs by reducing _CO2 waste, but it can also prevent pests and diseases by blocking the inflow of pathogens contained in the outside air, and reduce productivity and quality deterioration that can occur due to poor crop growth due to the sudden inflow of cold air in the winter. It can be prevented.

According to the greenhouse complex thermal environment control system using waste heat according to the present invention, a compact heat exchange means using the high-performance heat transfer characteristics of a vibrating heat pipe is applied to operate the cooling and heating processes continuously or selectively to suit greenhouse growth conditions. By creating crop growth conditions through precise thermal environment control, there is an effect of increasing crop yield and improving marketability.

According to the complex thermal environment control system for a greenhouse using waste heat according to the present invention, cold water can be effectively produced through heat exchange with the outside air in the winter without additional energy using an external air heat exchange means such as a vibrating heat pipe, and the outside air in the winter can be effectively produced. When the air falls below the freezing point, the water from the water storage unit is circulated to the water production unit, preventing freezing from occurring, resulting in the stable production of cold water.

1 is a configuration diagram illustrating the overall configuration of a complex thermal environment control system for a greenhouse using waste heat according to an embodiment of the present invention;
Figures 2A to 2C are partial enlarged views of a complex thermal environment control system for a greenhouse using waste heat according to an embodiment of the present invention. Figure 2a is an enlarged view of part A of Figure 1, and Figure 2b is an enlarged part B of Figure 1. Figure 2C is an enlarged view of part C of Figure 1.
Figure 3 is a perspective view illustrating the main parts of a complex thermal environment control system for a greenhouse using waste heat according to an embodiment of the present invention;
Figure 4 is a side cross-sectional view illustrating the main parts of a complex thermal environment control system for a greenhouse using waste heat according to an embodiment of the present invention;
Figure 5 is an exploded perspective view illustrating the main configuration of the fluid heat exchange treatment tank of the complex thermal environment control system for a greenhouse using waste heat according to an embodiment of the present invention;
Figure 6 is a perspective view showing a vibrating heat pipe constituting the internal air heat exchange means of the complex thermal environment control system for a greenhouse using waste heat according to an embodiment of the present invention;
Figures 7a and 7b are perspective views for explaining the complex thermal environment control unit of the complex thermal environment control system for a greenhouse using waste heat according to an embodiment of the present invention. Figure 7a is a perspective view showing the exterior, and Figure 7b is a perspective view showing the internal components. It is a perspective perspective view expressed so as to appear.
Figure 8 is an exploded perspective view showing the complex thermal environment control unit of the complex thermal environment control system for a greenhouse using waste heat according to an embodiment of the present invention;
Figure 9 is a configuration diagram illustrating the technical idea of the cold water supply unit of the complex thermal environment control system for a greenhouse using waste heat according to an embodiment of the present invention;
Figure 10 is a perspective view showing the cold water supply unit of the complex thermal environment control system for a greenhouse using waste heat according to an embodiment of the present invention;
Figure 11 is a perspective view of the main part of the cold water supply unit of the complex thermal environment control system for a greenhouse using waste heat according to an embodiment of the present invention;
Figure 12 is a perspective view for explaining the cold water generator of the cold water supply unit of the complex thermal environment control system for a greenhouse using waste heat according to an embodiment of the present invention;
Figure 13 is an exploded perspective view of the cold water supply unit of the complex thermal environment control system for a greenhouse using waste heat according to an embodiment of the present invention;
Figure 14 is a configuration diagram for explaining the operation of the cold water supply unit applied to the complex thermal environment control system of a greenhouse using waste heat according to an embodiment of the present invention;
Figure 15 is a main configuration diagram showing another form of a cold water supply unit applied to a complex thermal environment control system for a greenhouse using waste heat according to an embodiment of the present invention;
Figure 16 is a main configuration diagram showing another form of a cold water supply device applied to a complex thermal environment control system for a greenhouse using waste heat according to an embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail based on the attached drawings, Figures 1 to 16, and the same reference numerals will be assigned to the same components.

Meanwhile, in each drawing, detailed descriptions of the configuration and its operations and effects that can be easily understood by a person with ordinary knowledge in the field from general techniques are simplified or omitted. In addition, since the present invention is characterized by a complex thermal environment control system for a greenhouse using waste heat, the related parts will be shown and explained, and the description of the remaining parts will be simplified or omitted.

Figure 1 is a configuration diagram to explain the overall configuration of a complex thermal environment control system for a greenhouse using waste heat according to an embodiment of the present invention, and is a conceptual diagram illustrating the main configuration in a simplified manner. Figures 2A to 2C are partial enlarged views of a complex thermal environment control system for a greenhouse using waste heat according to an embodiment of the present invention. Figure 2a is an enlarged view of part A of Figure 1, and Figure 2b is an enlarged part B of Figure 1. Figure 2C is an enlarged view of part C of Figure 1. Figure 3 is a perspective view to explain the main parts of the complex thermal environment control system of a greenhouse using waste heat according to an embodiment of the present invention, and Figure 4 is a complex thermal environment of a greenhouse using waste heat according to an embodiment of the present invention. This is a side cross-sectional view to explain the main parts of the control system and schematically shows how it is installed in the greenhouse. Figure 5 is an exploded perspective view to explain the main configuration of the fluid heat exchange treatment tank of the complex thermal environment control system for a greenhouse using waste heat according to an embodiment of the present invention.

Referring to Figures 1 to 5, the greenhouse's complex thermal environment control system using waste heat according to an embodiment of the present invention reduces energy costs by performing cooling and heating using waste heat such as radiant energy of sunlight generated in the greenhouse. It is configured to do so, including a greenhouse (100), an internal air moving unit (110), a fluid heat exchange treatment tank (200), an internal air heat exchange means (300), a heat pump device (400), a complex thermal environment control unit (500), and heat storage. It is provided with a unit 600, a supply air moving unit 140, and a cold water supply unit 700.

The greenhouse 100 is not particularly limited in structure or form as long as it is formed to allow sunlight to enter and has a greenhouse space for growing plants inside, but a representative example is a glass greenhouse in which transparent glass is installed in a greenhouse frame (not shown). However, a greenhouse in which transparent vinyl is installed on the greenhouse frame can be typically applied.

The internal air movement unit 110 is a component that serves as a passage for flowing the internal air of the greenhouse into the fluid heat exchange treatment tank 200, and is composed of a duct widely used in the air conditioning field.

To be more specific, the internal air moving part 110 is installed inside the greenhouse 100 and includes an internal air inlet 115 formed in the form of a plurality of holes to allow the internal air of the greenhouse to flow in, and an internal air inlet part ( It consists of an air inlet duct with an internal air discharge part 116 through which the internal air flowing into 115) is discharged. Here, as shown in Figure 4, the air inlet duct is arranged longitudinally on the ceiling of the greenhouse in consideration of the fact that relatively high temperature air inside the greenhouse, such as radiant energy from sunlight, is moved to the upper layer by convection, and is located at the internal air inlet. An air intake section 111 formed with a plurality of (115), and an air movement section extending downward and curved in the air intake section 111 toward the fluid heat exchange treatment tank 200 and having an internal air discharge portion 116 formed at the end. (112) is provided.

Additionally, an internal air suction fan 120 is installed in the air inlet duct to suck in internal air. Here, the internal air suction fan 120 is shown as a simplified symbol that can be used as a suction blowing fan used in air conditioning equipment or greenhouses.

The fluid heat exchange treatment tank 200 is a component provided for heat exchange between the greenhouse's internal air and water, and is provided with an internal air receiving chamber 210a that accommodates the internal air discharged from the internal air discharge unit 116, and an internal air receiving chamber 210a is provided. If the structure is provided with a water-receiving chamber (220a) that is separated from the air-receiving chamber (210a) and accommodates water, it can be constructed with a plate or concrete structure without any particular restrictions on the shape or structure.

For example, the fluid heat exchange treatment tank 200 may be composed of a hexahedral-shaped structure in which the internal air chamber portion 210 and the water chamber portion 220 are arranged vertically.

The internal air chamber part 210 is formed in a substantially rectangular shape and has an internal air receiving chamber 210a provided therein, and an internal air inlet 212 is formed in the center of the upper surface through which the internal air discharge part 116 is connected and communicated. and an internal air outlet 213 to which the supply air moving part 140 is connected is formed on both sides of the greenhouse.

The water chamber part 220 is disposed in contact with the internal air chamber part 210 and is formed in a substantially rectangular shape corresponding to the internal air chamber part, and has a water receiving chamber 220a therein, and is a heat pump device 400 to be described later. ) is formed with a water outlet 222 to which the water supply line connected to the water supply line is connected, and a water inlet 223 to which the water recovery line connected to the heat pump device is connected.

In addition, the fluid heat exchange treatment tank 200 is provided with a heat exchange means installation part 230 provided at the boundary between the internal air chamber part 210 and the water chamber part 220 so that the internal air heat exchange means 300 is installed. .

The heat exchange means installation part 230 consists of a heat pipe assembly plate (not shown) in which a plurality of pipe insertion holes are perforated to fit the shape of a vibrating heat pipe to be described later, and is installed to form an internal air chamber part 210 and a water chamber part 220. However, in this embodiment, the pipe installation plate 232 is installed in the heat exchange means installation hole 231 drilled in the upper plate 225 of the water chamber part 220.

The pipe installation plate 232 has a plurality of pipe insertion slits 2321 into which a vibrating heat pipe 310, which will be described later, is inserted into the plate member, and a fastening hole 2322 for fastening a fastening screw at the edge of the plate member. It is formed.

Then, the vibrating heat pipe 310 is airtightly fixed by adhesion or welding with an adhesive while being inserted into the pipe insertion slit 2321 of the pipe installation plate 232. After the vibrating heat pipe is fixed in this way, the pipe insertion slit 2321 can be airtightly attached by inserting an airtight member (not shown) or can be attached by covering it with an airtight pad (not shown).

Preferably, the water chamber part 220 is formed as an underground water tank located in an underground space adjacent to the greenhouse to minimize temperature changes in the water, and the internal air chamber part 210 is made of an insulating material at the upper part corresponding to the underground water tank. It can be composed of an insulated air tank formed by

Figure 6 is a perspective view showing a vibrating heat pipe constituting the internal air heat exchange means of a greenhouse complex thermal environment control system using waste heat according to an embodiment of the present invention, and is one of a plurality of vibrating heat pipes constituting the internal air heat exchange means. It depicts a dog.

Referring to Figure 6, the internal air heat exchange means 300 is a component that heats the fluid contained in the water receiving chamber 220a through a heat exchange process of greenhouse waste heat. There is no particular limitation as long as the heat exchange efficiency is excellent, but it is used for high temperature in the summer. It consists of a plurality of vibrating heat pipes 310 that can cool and re-supply greenhouse air and at the same time perform heat storage through heat transfer at a high heat flux.

The vibrating heat pipe 310 is a component that performs heat exchange between the internal air contained in the internal air containing chamber 210a and the water contained in the water containing chamber 220a, and the internal air is heated through evaporation and condensation of the working fluid without external power. One side is exposed to the internal air receiving chamber (210a) and the other side is immersed in the water receiving chamber (220a) to transfer the heat of the air to the water.

As is well known, the vibrating heat pipe 310 is a device that injects a working fluid into a sealed interior and then evacuates it, and transfers heat without a separate external power through evaporation and condensation of the working fluid. Here, the working fluid generally refers to a refrigerant. In a heat engine, the fluid that receives the supply of heat energy expands to do mechanical work. The remaining energy is released to return to its original state, and then heat is supplied again. In this way, power is generated through one cycle in which the fluid undergoes several state changes. In addition, the vibrating heat pipe 310 is widely applied as a product with excellent heat exchange characteristics when the minimum operating temperature difference between the heat exchange target fluid (internal air contained in the internal air containing chamber and water contained in the water containing chamber) is 7°C or more, but is limited to this. That is not the case.

In addition, the vibrating heat pipe 310 applied as the internal air heat exchange means 300 may have a hydrophobic coating (not shown) formed on the surface. Here, the hydrophobic coating part is composed of a hydrophobic coating layer in which hydrophobic compounds are laminated on the surface of the vibrating heat pipe 310. Here, hydrophobic compounds are substances that do not have a group that has affinity for water molecules, and various known products formulated to allow water to form and slide and separate without being absorbed can be applied.

Meanwhile, the supply air moving unit 140 is a component that serves as a passage for moving heat exchange air from the internal air receiving chamber 210a that has undergone a heat exchange process by the internal air heat exchange means 300 to the greenhouse, and is used for air conditioning. It is composed of ducts widely used in the field.

The supply air moving unit 140 has a connection section 141 connected to the internal air outlet 213, and an air supply section 142 connected to the connection section 141 and placed in the greenhouse and having vents 143 at regular intervals. It consists of an air supply duct equipped with a.

In addition, a plurality of supply air moving units 140 (on both sides) are arranged in the longitudinal direction of the greenhouse in the width direction, and a heat exchange air intake fan 570 installed in the connection section 141 or the air supply section 142 is configured. there is.

The heat exchange air intake fan 570 can be selected and applied without particular restrictions on shape and structure as long as it can suck air. In this embodiment, an example is shown in which a blowing fan is installed in the connection duct 560. I'm doing it.

The heat pump device 400 is a component for transferring the heat recovered in the water of the water chamber part 220 by the internal air heat exchange means 300 through heat exchange with the heat storage part, and heat energy contained in the heated water. It is installed by selecting from among known heat pumps that evaporate in an evaporator (not shown) and discharge from a condenser (not shown). In this embodiment, the heat source of the heated water in the water chamber unit 220 is connected to the heat storage unit (not shown). 600) performs the function of converting it into a heat source for heating.

In addition, the heat pump device 400 is provided with a water circulation line 420 connected to the water chamber portion 220. At this time, a water circulation pump 430 is installed in the water circulation line 420. Here, the water circulation line 420 is a water supply line 422 connected between the water outlet 222 of the water chamber 220 and the water inlet of the heat pump device 400, and the water supply line 422 of the water chamber 220. It is provided with a water recovery line 424 connected between the water inlet 223 and the water discharge port of the heat pump device 400.

The accompanying drawings, FIGS. 7A and 7B, are perspective views for explaining the complex thermal environment control unit of the complex thermal environment control system for a greenhouse using waste heat according to an embodiment of the present invention. FIG. 7A is a perspective view showing the exterior, and FIG. 7B is a perspective view showing the exterior. It is a perspective view showing the internal components. Figure 8 is an exploded perspective view showing the complex thermal environment control unit of the complex thermal environment control system for a greenhouse using waste heat according to an embodiment of the present invention.

Referring to Figures 7A to 8, the complex thermal environment control unit 500 is installed in the supply air moving unit 140 and converts the heat exchange air that has undergone the heat exchange process of the internal air heat exchange means 300 into supply air with a set temperature and humidity. As a conversion component, it consists of a complex thermal environment control device that can effectively control temperature and humidity for heating and cooling inside the greenhouse.

The complex thermal environment control device 500 is equipped with an air passage part 510, an air cooling means 520, and an air heating means 530 to control the air supplied into the greenhouse 100 to have a set temperature and humidity. performs the function.

The air passage unit 510 is a component that functions as a passage through which air moves, and is composed of an air passage box 510a connected to the supply air movement unit 140.

The air passage box 510a includes a cooling/humidity control room 511 in which air humidity control is performed, a temperature control room 512 in which air temperature control is performed, and a cooling/humidity control room 511 and a temperature control room. It is provided with a temperature and humidity room connection part (513) connecting (512).

In particular, in the air passage box 510a, a cooling/humidity control room 511 is disposed in the air entry direction so that the cooled air is rewarmed when controlling the air humidity and then supplied to the greenhouse, followed by a temperature and humidity room connection portion 513 and It is preferable that a temperature control room 512 is placed.

The cooling/humidity control room 511 includes a bottom plate 5111 disposed at the bottom and formed of a plate-shaped member, a top plate 5112 disposed at the top facing the bottom plate 5111 and formed of a plate-shaped member, and a connection between the bottom plate and the top plate. It is composed of a plurality of side plates 5113. And the cooling/humidity control room 511 is formed in the communication hole 5114 formed in the side plate 5113 in the air inflow direction and the side plate 5113 facing the temperature control room 512, so that the temperature and humidity room connection portion 513 is formed. A connecting communication hole 5115 is drilled.

Additionally, the cooling/humidity control room 511 is provided with a drain unit 5116 for discharging condensate generated during the humidity control process.

The drain part 5116 can be formed without any particular restrictions on its shape as long as it has a structure that allows discharge of condensate. It includes a drain line 5116b installed in the drain hole drilled in the bottom plate and a drain line installed for external discharge of condensate. A drain valve (5116c) may be provided.

Similar to the cooling/humidity control room 511 described above, the temperature control room 512 includes a bottom plate 5121, a top plate 5122 disposed on the upper side facing the bottom plate 5121, the bottom plate 5121, and the top plate 5122. It consists of a plurality of side plates 5123 that connect the air discharge direction side plate 5123, and a communication hole 5125 formed in the side plate 5123 in the air discharge direction, and a temperature and humidity room connection part on the side plate 5123 facing the cooling/humidity control room 511. A communication hole 5124 to which 513 is connected is drilled.

The temperature and humidity room connection part 513 separates the cooling/humidity control room 511 and the temperature control room 512, thereby maintaining the temperature of the temperature control room 512 during cooling and humidity control in the cooling/humidity control room 511. This function is to minimize the inflow of cold air from the cooling/humidity control room 511 when the temperature control room 512 is heated. The side plates 5113 and 5123 are formed in a cylindrical shape and face each other. ) is connected to the communication holes (5115, 5124).

Meanwhile, the air cooling means 520 is a component that provides cold air for cooling and humidity control of the air passing through the air passage unit 510, and is formed on one side of the ventilation passage box 510a to circulate cold water. It is provided with a cold water chamber 521 and a cooling control heat exchange means 522 installed in the cold water chamber 521.

The cold water chamber 521 is a space where cold water that cools the air introduced into the cooling/humidity control room 511 flows and stays, and is formed in the upper part of the cooling/humidity control room 511.

The cold water chamber 521 is not particularly limited in shape and size as long as the cooling characteristics of the air introduced into the cooling/humidity control room are excellent, but in this embodiment, it extends to the top of the side plate 5113 of the cooling/humidity control room 511. It consists of a chamber side plate 5212 and a chamber cover plate 5213 connected to the upper part of the chamber side plate 5212, and a connection portion to which the cold water supply line 551 and the cold water recovery line 552 are connected is formed.

The cooling control heat exchange means 522 is a component that performs heat exchange between the cold water contained in the cold water chamber 521 and the air contained in the cooling/humidity control room 511. The air in the cooling/humidity control room 511 is exchanged through the heat exchange process. It cools, and moisture is removed through condensation due to cooling. There is no particular limitation to the cooling control heat exchange means 522 as long as the heat exchange efficiency is excellent, but in this embodiment, it acts as heat storage (stores internal heat) through heat transfer at a high heat flux. It consists of a vibrating heat pipe (522a) that can perform.

One side of the vibrating heat pipe 522a is exposed to the cold water chamber 521 and the other side is inserted into the cooling/humidity control room 511 to transfer heat from external air to water by evaporation and condensation of the working fluid without external power. there is. Here, the detailed configuration and operational effects of the vibrating heat pipe are similar to the internal air heat exchange means described above, so detailed description is omitted.

In addition, the vibrating heat pipe 522a used as the cooling control heat exchange means 522 has a hydrophobic coating portion (not shown) formed on the surface. Here, the hydrophobic coating part is composed of a hydrophobic coating layer in which hydrophobic compounds are laminated on the surface of the vibrating heat pipe 522a. Here, hydrophobic compounds are substances that do not have a group that has affinity for water molecules, and various known products formulated to allow water to form and slide and separate without being absorbed can be applied.

Meanwhile, the air heating means 530 is a component that performs a regulating action to raise the temperature of the air passing through the air passage unit 510, and is formed on the upper part of the other side of the ventilation passage box 510a and circulates hot water. It is provided with a chamber 531 and a heating control heat exchange means 532 installed in the hot water chamber 531.

The hot water chamber 531 is a space where hot water that warms the air introduced into the temperature control room 512 flows and stays, and is formed at the upper part of the temperature control room 512.

The hot water chamber 531 is not particularly limited in shape and size as long as the heating characteristics of the air flowing into the temperature control room 512 are excellent, but in this embodiment, it extends to the top of the side plate 5123 of the temperature control room 512. It consists of a chamber side plate 5312 and a chamber cover plate 5313 connected to the upper part of the chamber side plate 5312, and a connection part to which the temperature control water supply line 541 and the temperature control water recovery line 542 are connected. It is formed.

One side of the heating control heat exchange means 532 is immersed in the hot water of the hot water chamber 531 to transfer the heat of the hot water supplied from the heat storage unit 600, such as a heat storage tank, to the air by evaporation and condensation of the working fluid without external power. The other side is composed of a vibrating heat pipe 532a disposed in the air passage portion 510, and the detailed configuration and operational effect of the vibrating heat pipe are similar to the internal air heat exchange means described above, so detailed description is omitted.

Meanwhile, the cooling/humidity control room 511 and the temperature control room 512 have a heat exchange means installation part 515 for installing the cooling control heat exchange means 522 and the heating control heat exchange means 532 on the top plates 5112 and 5122. ) is composed of each.

The above-described heat exchange means installation portion 515 includes a heat exchange means installation hole 5151 perforated in the upper plates 5112 and 5122 of the cooling/humidity control room 511 and the temperature control room 512, and a heat exchange means installation hole 5151. ) is provided with a pipe installation plate (5152) installed on the pipe.

The pipe installation plate 5152 has a plurality of pipe insertion slits 5152a into which the vibrating heat pipes 522a and 532a are inserted into the plate-shaped member, and a fastening hole 5152b for fastening the fastening screw at the edge of the plate-shaped member. It is formed.

In addition, the vibrating heat pipes 522a and 532a are airtightly fixed by adhesion or welding with an adhesive while being inserted into the pipe insertion slit 5152a of the pipe installation plate 5152. After the vibrating heat pipes 522a and 532a are fixed in this way, the pipe insertion slit 5152a can be airtightly attached by inserting an airtight member or can be attached by covering it with an airtight pad.

Meanwhile, the complex thermal environment control unit 500 (complex thermal environment control device) is connected to a temperature control water circulation line 540 so that hot water circulates in the hot water chamber 531, and cold water is connected to circulate cold water in the cold water chamber 521. A circulation line 550 is connected.

The temperature-controlled water circulation line 540 is a temperature-controlled water supply line 541 connected to the hot water chamber 531 so that hot water (thermal storage water) stored in the heat storage unit 600, such as a heat storage tank, is supplied, and the hot water chamber 531. It is provided with a temperature-controlled water recovery line 542 that is connected to recover hot water that has undergone a heat exchange process via .

The cold water circulation line 550 carries out a heat exchange process via the cold water supply line 551 connected to the cold water chamber 521 and the cold water chamber 521 so that cold water is supplied from the cold water supply unit such as the cold water storage unit 700. It is provided with a cold water recovery line 552 connected to the cold water supply unit so that rough cold water is recovered.

In addition, the above-described cold water circulation line 550 is equipped with a cold water circulation pump 553 that performs a pumping action to circulate cold water to the cold water chamber, and the temperature control water circulation line 540 is installed to circulate hot water to the hot water chamber. A temperature-controlled water circulation pump 543 that performs a pumping action is installed. Here, the cold water circulation pump 553 can be installed in only one of the cold water supply line 551 and the cold water recovery line 552, and can be installed in the cold water supply line 551 and the cold water recovery line 552 respectively for smoother circulation. It may be possible. Likewise, the temperature-adjusted water circulation pump 543 can also be installed on either or both of the temperature-adjusted water supply line 541 and the temperature-adjusted water recovery line 542.

Meanwhile, the air passage box 510 includes a connection duct 560 connected to the cooling/humidity control room 511 in the air inlet direction, and a heat exchange air intake fan 570 installed in the connection duct 560. there is.

The connection duct 560 is formed in a structure in which connection flanges are coupled to both sides of a cylindrical tube.

The heat exchange air intake fan 570 can be selected and applied without particular restrictions on shape and structure as long as it can suck air. In this embodiment, an example is shown in which a blowing fan is installed in the connection duct 560. I'm doing it.

Meanwhile, the complex thermal environment control device 500 includes a first temperature detection unit (not shown) that detects the temperature of the cooling/humidity control room 511, and a second temperature detection unit that detects the temperature of the temperature control room 512. (not shown), a third temperature detection unit (not shown) that detects the temperature of the cold water chamber 521, and a fourth temperature detection unit (not shown) that detects the temperature of the hot water chamber 531. Here, the first to fourth temperature sensing units may be configured as temperature sensors.

Additionally, the complex thermal environment control device 500 is equipped with a humidity detection unit (not shown) such as a humidity sensor to detect humidity. The humidity sensing unit may be installed in the cooling/humidity control room 511, the temperature control room 512, the supply air moving unit 140, etc.

In addition, the complex thermal environment control device 500 determines the temperature of the air discharged from the supply air moving unit 140 and introduced into the greenhouse 100 based on the signals detected by the first to fourth temperature detection units and the humidity detection unit. And a thermal environment control unit (not shown) is configured as a control means to control the humidity to the set temperature and humidity.

In addition, the complex thermal environment control device 500 includes an input unit (not shown) consisting of a button or a touch screen to input the desired temperature and humidity, and a display unit (not shown) that displays the set temperature and humidity, the desired temperature and humidity, etc. City), etc. are provided.

Referring to Figure 1, the heat storage unit 600 is a component that stores heat recovered by the heat pump device 400, and includes a heat storage tank 610 in which heat storage water stored by the action of the heat pump device 400 is stored; A heat storage circulation line 620 is provided that is connected between the heat storage tank 610 and the heat pump device 400. At this time, a heat storage water circulation pump 630 is installed in the heat storage circulation line 620. Here, the heat storage circulation line 620 is a heat storage supply line 622 connected between the heat storage water inlet of the heat pump device 400 and the heat storage tank 610, and the heat storage water outlet of the heat pump device 400 and the heat storage tank. (610) is provided with a heat storage recovery line (624) connected between them.

In the attached drawings, Figure 9 is a configuration diagram for explaining the technical idea of the cold water supply unit of a complex thermal environment control system for a greenhouse using waste heat according to an embodiment of the present invention, and Figure 10 is a configuration diagram for explaining the technical idea of the cold water supply unit part of a greenhouse complex thermal environment control system using waste heat according to an embodiment of the present invention. A perspective view showing the cold water supply unit of the complex thermal environment control system of a greenhouse using , Figure 11 is a perspective view of the main part of the cold water supply unit of the complex thermal environment control system of a greenhouse using waste heat according to an embodiment of the present invention, and Figure 12 is a perspective view of the main part of the cold water supply unit of the complex thermal environment control system of a greenhouse using waste heat according to an embodiment of the present invention. Figure 13 is a perspective view illustrating the cold water generator of the cold water supply unit of the complex thermal environment control system for a greenhouse using waste heat according to an embodiment of the present invention. Figure 13 is a perspective view showing the complex thermal environment control of a greenhouse using waste heat according to an embodiment of the present invention. This is an exploded perspective view of the cold water supply unit of the system.

Referring to FIGS. 9 to 13, the cold water supply unit 700 can be applied without particular limitations as long as it is a device that can supply cold water to the cold water chamber of the composite thermal environment control unit 500. However, in this embodiment, it is used for winter outdoor air and It is characterized by being configured as an anti-icing cold water generator that can effectively produce cold water through heat exchange and that does not cause freezing even when the outside temperature falls below the freezing point, enabling stable production of cold water.

The cold water supply unit 700 (anti-icing cold water generator) consists of a cold water storage unit 710 that stores cold water, and a cold water generator 720 that cools the water in the cold water storage unit 710.

The cold water storage unit 710 is a storage container in which water is stored and can be configured in various ways without particular restrictions on structure or form as long as it has a space for storing a certain amount of water. However, in this embodiment, the cold water storage unit 710 It consists of a cylindrical storage tank, and an insulating layer (not shown) is formed on the outer surface to maintain stable cold and heat. Preferably, the cold water storage unit 710 can be installed underground for more stable insulation.

The cold water generator 720 acts as a cooling agent on the cold water generator 721, where a cooling process is performed to lower the temperature of the water flowing in from the cold water storage portion 710, and on the water remaining in the cold water generator 721. It is provided with an external air heat exchange means (722) that performs.

The cold water production tank 721 is provided with an external air receiving chamber 723 that accommodates external air, and a cold water generating chamber 724 that is separated from the external air receiving chamber 723 and accommodates water.

The cold water generation tank 721 can be configured without any particular restrictions on its shape or structure as long as a part of the external air heat exchange means 722 is exposed to the external air and has a cold water production chamber.

For example, the cold water production tank 721 is formed in the shape of a container consisting of a bottom plate 7211, a side plate 7212, and a top plate 7213 to form a receiving space where water stays, and an external air receiving chamber 723 is provided at the top. It has a structure in which a cold water generating unit case 725 is formed to surround the outside, and a support 726 placed on top of the cold water storage unit 710 is provided at the lower part of the bottom plate 7211.

The external air heat exchange means 722 is a component that performs heat exchange between the external air contained in the external air receiving chamber 723 and the water contained in the cold water generating chamber 724. There is no particular limitation as long as the heat exchange efficiency is excellent. In the embodiment, it is composed of a vibrating heat pipe 722a that can perform heat storage (storing cold heat) through heat transfer at a high heat flux.

The vibrating heat pipe 722a is a component that performs heat exchange between the external air contained in the external air receiving chamber 723 and the water contained in the cold water cooling chamber 724, and is used to heat the external air through evaporation and condensation of the working fluid without external power. One side is exposed to the external air receiving chamber 723 and the other side is immersed in the cold water generating chamber 724 to transfer the heat of the air to the water.

The cold water supply unit 700 drills a plurality of pipe insertion holes according to the spacing in the upper plate 7213 of the cold water production tank 721 and inserts each pipeline of the vibrating heat pipe 722a into these pipe insertion holes. However, in this embodiment, a heat exchange means installation part 727 is provided so that the external air heat exchange means 722, which consists of a plurality of vibrating heat pipes 722a, can be quickly and easily installed in the cold water production tank 721. Equipped with

The heat exchange means installation part 727 includes a heat exchange means installation hole 7271 drilled in the upper plate 7213 of the cold water production tank 721 for installation of the external air heat exchange means 722, and this heat exchange means installation hole ( It is equipped with a pipe installation plate (7272) installed on 7271).

The pipe installation plate 7272 is formed with a plurality of pipe insertion slits 7272a into which the vibrating heat pipe 722a is inserted into the plate-shaped member, and a fastening hole 7272b for fastening the fastening screw at the edge of the plate-shaped member. there is.

Meanwhile, the cold water supply unit 700 generates water via the cold water production water supply line 730, which is connected to supply water from the cold water storage unit 710 to the cold water production chamber 724, and the cold water production chamber 724. It is provided with a cold water discharge line 740 connected to recover the cold water to the cold water storage unit 710, and a cold water production pump 750 connected to a cold water production water supply line (or cold water discharge line).

In addition, a check valve 732 may be installed in the cold water production water supply line 730 to prevent backflow, and a discharge control valve (732) may be installed in the cold water discharge line 740 to prevent water contained in the cold water production chamber 724 from draining. 742) can be installed. Here, the discharge control valve 742 is preferably configured as an electric automatic control valve that automatically opens and closes under the control of the cold water production control unit, which will be described later.

In addition, the cold water supply unit 700 includes a cold water production chamber temperature detection unit 760 that detects the temperature of the cold water production chamber, and a cold water storage temperature detection unit 770 that detects the temperature of the cold water storage unit 710. It is done. Here, the cold water production room temperature detection unit 760 and the cold water storage temperature detection unit 770 are composed of temperature sensors.

The cold water supply unit 700 generates cold water so that the cold water temperature of the cold water storage unit 710 is the set temperature based on the signal detected by the cold water storage unit temperature detection unit 770 and the cold water production room temperature detection unit 760. A cold water production control unit 780 is configured to control the operation of the pump 750.

The cold water generation control unit 780 performs a control operation to prevent freezing of the cold water generation chamber 724 by operating the cold water generation pump 750 when the temperature detected by the cold water generation chamber temperature detection unit 760 is below the freezing point of water. It is configured to do so.

Meanwhile, unexplained symbol 551 is a cold water supply line that supplies cold water contained in the cold water storage unit 710 to the point of use, 552 is a cold water recovery line in which cold water whose temperature has risen through a heat exchange process at the point of use is recovered, and 793 is a cold water supply line that supplies cold water stored in the cold water storage unit 710 to the point of use. This is a supplementary water line for supplying supplemental water to the cold water storage unit 710.

In addition, the above-described external air receiving chamber 723 is composed of a breathable space partitioned by the cold water generator case 725 in the present embodiment, but even without a separate case, one side of the vibrating heat pipe 722a is connected to the external air. It is a concept that includes a structure that allows contact.

Hereinafter, the operation of the above-described cold water supply unit 700 will be briefly described.

Figure 14 is a configuration diagram for explaining the operation of the cold water supply unit applied to the complex thermal environment control system of a greenhouse using waste heat according to an embodiment of the present invention.

Referring to FIG. 14, the cold water storage unit 710 at the bottom of the cold water supply unit 700 functions as an insulated storage tank space and provides a storage function to store cold water at a target temperature condition without heat loss. The cold water generating unit 720 provided at the upper part of the cold water storage unit 710 performs the function of generating cold water with a target temperature control stored in the lower cold water storage unit 710.

To explain the cold water generation process in more detail in the winter when the temperature drops, a detection signal is applied from the cold water storage temperature detection unit 770, and the temperature of the water in the cold water storage unit 710 detected by the cold water generation control unit 780 is increased. In the case of relatively high temperature cold water in the set temperature range (e.g. 15 to 18°C, where 'high temperature' refers to a relative temperature compared to low temperature cold water described later), cold water is generated under the control of the cold water generation control unit 780. As the pump 750 operates for a set time, it flows the above-mentioned high-temperature cold water (e.g., 15 to 18°C) into the cold water production chamber 724 through the cold water production water supply line 730 at a set flow rate. .

When high-temperature cold water is introduced in this way, one side of the vibrating heat pipe 722a is exposed to the cold outdoor air of the external air receiving chamber 723, and the other side is immersed in the cold water generating chamber 724, so that the vibrating heat pipe 722a is not affected by the action of the known vibrating heat pipe. As a result, heat exchange between the cold heat of the outside air and the high-temperature cold water in the cold water production chamber 724 is achieved through evaporation and condensation of the working fluid without external power.

Through the heat exchange process of the vibrating heat pipe 722a as described above, the high-temperature cold water contained in the cold water generation chamber 724 is low-temperature cold water of a temperature in a set range (e.g., 5 to 7°C) (here, 'low temperature' is a relative concept). When cooled to a low temperature), the cold water production pump 750 is re-operated for a set time under the control of the cold water production control unit 780 to introduce new high-temperature cold water through the cold water production water supply line 730. And due to the reaction, the low-temperature cold water in the cold water production chamber 724 flows out into the cold water storage unit 710 through the cold water discharge line 740. At this time, when the cold water discharge line 740 is equipped with a discharge control valve 742, an opening operation is performed by the cold water production control unit 780.

Meanwhile, during the cold water production process as described above, if the temperature of the outside air is very low (e.g., -10°C), freezing in the cold water production chamber 724 may occur. In other words, freezing occurs on the part of the vibrating heat pipe immersed in water, and in this case, the ice on the surface acts as thermal resistance, preventing smooth heat exchange, causing the ice to gradually thicken rather than lowering the temperature of the cold water. This can happen. However, the anti-icing cold water generator according to the present invention operates the cold water production pump 750 when the temperature detected from the signal detected by the cold water production room temperature detection unit 760 is close to the freezing point, thereby generating a relatively high temperature. Freezing can be prevented by circulating the water in the cold water storage unit 710 to the cold water production chamber 724. For example, when the cooling temperature of the cold water generation chamber 724 reaches 5°C, low-temperature cold water is discharged to the cold water storage unit 710, and high-temperature cold water from the upper part of the cold water storage unit 710 is introduced to force the cold water with the outside air again. By repeating the production of cold water with a set temperature through convection heat exchange, ultimately no freezing occurs and the cold water can be stored at a uniform temperature in the cold water storage unit.

Figure 15 is a main configuration diagram showing another form of a cold water supply unit applied to a complex thermal environment control system for a greenhouse using waste heat according to an embodiment of the present invention, and the main components are simplified with symbols and the like.

Referring to Figure 15, the cold water supply unit further includes an external air blowing fan 795 to generate cold water more quickly.

The external air blowing fan 795 operates the cold water generation control unit 780 so that the cold water temperature in the cold water storage unit becomes the set temperature based on the signal detected by the cold water storage unit temperature detection unit 760 and the cold water production room temperature detection unit 770. It operates to introduce external air into the external air receiving chamber 723 under the control of .

The external air blowing fan 795 is installed in the opening formed in the cold water generator case 725, and a blowing fan used in the air conditioning field can be installed.

The cold water generator 720 further includes an outdoor temperature detection unit 796 comprised of a temperature sensor to detect the temperature of the external air receiving chamber 723, that is, the temperature of the external air.

And the cold water production control unit 780 stops the operation of the external air blowing fan 795 when the temperature difference detected by the detection signal by the external temperature detection unit 796 and the cold water production room temperature detection unit 770 is lower than the set range. It is configured to perform the commanded control operation.

The cold water supply unit described above can effectively produce cold water through heat exchange with the outside air in the winter, and when the temperature of the outside air is very low, freezing does not occur, so not only can cold water be produced stably, but it is also unnecessary in the cold water production process. Energy waste caused by driving the external air blowing fan 795 can be reduced. For example, the general vibrating heat pipe 722a performs normal heat exchange when the minimum operating temperature difference is 7°C or more, so the heat exchange target fluid (cold water generation) detected by the outside temperature detection unit 796 and the cold water production room temperature detection unit 760 If the temperature difference between the water in the room and the external air in the external air receiving room is less than 7℃, the vibrating heat pipe 722a does not operate normally, so the external air blowing fan 795 is installed under the control of the cold water generation control unit 780. You can prevent energy waste by stopping the operation.

Figure 16 is a main configuration diagram showing another form of a cold water supply unit applied to a complex thermal environment control system for a greenhouse using waste heat according to an embodiment of the present invention, and the main components are simplified with symbols and shown.

Referring to Figure 16, the cold water supply unit 700, similar to the structure described above, includes a cold water storage unit 710, a cold water generation unit 720, a cold water production water supply line 730, a cold water discharge line 740, and It consists of a cold water production pump (750), a cold water production room temperature detection unit (760), a cold water storage temperature detection unit (770), and an external air blowing fan (795). By operating the cold water production pump (750), the cold water When continuously cooling the water contained in the production chamber 724, a cold water path guide partition 729 is provided to improve cooling efficiency.

The cold water path guide partition 729 is configured in the form of a partition with a flow port inside the cold water generation tank 721 so that the water flowing into the cold water generation chamber 724 is discharged while forming a 'U' shaped flow path.

The above-mentioned cold water supply unit 700 allows first-in-first-out of water as a 'U'-shaped flow path is formed in the cold water generation chamber 724, so the water that flows in first is cooled by the vibrating heat pipe 722a. It can be discharged without mixing with the water that flows in later. Accordingly, when the water contained in the cold water production chamber 724 is continuously cooled while operating the cold water production pump 750, cold water production can be effectively performed through first-in-first-out.

Hereinafter, the operation of a complex thermal environment control system for a greenhouse using waste heat according to an embodiment of the present invention will be briefly described.

Referring to Figure 1, when the greenhouse becomes hot due to solar radiant energy, such as in the middle of the day in the summer or winter, the air inside the greenhouse is moved to the fluid heat exchange treatment tank 200 without operating the air conditioner or opening the side or ceiling windows. Through the heat exchange process by the internal air heat exchange means 300, the temperature can be lowered to a temperature appropriate for plant growth, and at the same time, the high temperature waste heat of the greenhouse can be stored and recycled.

To be more specific, when the temperature inside the greenhouse rises above the set temperature and the internal air intake fan 120 is operated, the internal air flowing into the internal air inlet 115 is transferred to the internal air outlet 116. It flows into the internal air chamber part 210 through.

Subsequently, the internal air flowing into the internal air chamber unit 210 is cooled through the heat exchange action of the internal air heat exchange means 300 and then re-supplied to the greenhouse. The heat exchange action of the internal air heat exchange means 300 is well known because one side, the upper part, of the vibrating heat pipe is exposed to the internal air chamber part 210, and the other side, the lower part, is immersed in the water of the water chamber part 220. Due to the action of the vibrating heat pipe, heat exchange between the heat of the internal air and the water in the water chamber part 220 occurs through evaporation and condensation of the working fluid without external power, thereby lowering the temperature of the internal air, and conversely, the temperature of the water chamber 220 is exchanged. The water in unit 220 is provided with heat and its temperature rises.

When the heat exchange air with the internal air temperature lowered in this way is obtained, it is re-supplied into the greenhouse through the duct of the supply air moving part 140 by the operation of the heat exchange air intake fan 570. At this time, the supply air moving unit 140 is equipped with a complex thermal environment control unit 500, as will be described later, and is converted to an optimal state in which not only the temperature but also the humidity is controlled appropriate for plant growth, and then is supplied to the greenhouse.

In addition, according to the heat exchange action of the internal air heat exchange means 300, the hot water of the water chamber 220 is supplied to the heat pump device 400 and converted into heat storage water through a heat exchange process, and then stored in the heat storage tank 610. It is saved in Here, the heated water in the water chamber unit 220 is transported through the water supply line 422 when the water circulation pump 430 operates and passes through the heat pump device 400 to provide heat for generating heat storage water. After cooling, it is circulated and re-introduced into the water chamber portion 220 through the water recovery line 424. At this time, the heat storage water of the heat storage tank 610 flowing into the heat pump device 400 through the heat storage supply line 622 is heated and then supplied to the heat storage tank 610 via the heat storage recovery line 624, and the heat storage tank The thermal storage water stored in is recycled for temperature control while circulating through the hot water chamber 531, which will be described later.

Hereinafter, the operation of the complex thermal environment control device 500 applied as a complex thermal environment control unit will be described in more detail.

The complex thermal environment control device 500 may require greenhouse humid air control based on relative humidity (RH) depending on seasonal, daily, and hourly changes in outdoor conditions and crop growth stages. However, simple heating, or Since there may be cases where only cooling is required, selective cooling, heating and dehumidification control can be easily performed according to changes in operating conditions.

First, when performing cooling control of the greenhouse, the operation of the temperature control water circulation pump 543 is stopped under the control of the thermal environment control unit (not shown), and the heat exchange air intake fan 570 is driven to suck air. By driving the cold water circulation pump 553 to circulate cold water into the cold water chamber 521, the air flowing into the cooling/humidity control room 511 is cooled through the heat exchange action of the cooling control heat exchange means 522 and then supplied to the greenhouse. do.

Here, the heat exchange action of the cooling control heat exchange means 522 is well known because one side of the vibrating heat pipe 522a is immersed in cold water of the cold water chamber 521 and the other side is in contact with the air of the cooling/humidity control chamber 511. Due to the action of the vibrating heat pipe, heat exchange between the cold water of the cold water and the air of the cooling/humidity control room 511 occurs through evaporation and condensation of the working fluid without external power, thereby lowering the temperature of the air.

In addition, when the cooling temperature is set by the input unit (not shown) in the above-mentioned cooling process, the cooling temperature is extracted based on the detection signal applied from the first temperature detection unit (not shown), and the heat exchange air intake fan is used to achieve the set cooling temperature. The flow rate is controlled through the drive control of (570) and the flow rate or flow rate of cold water is controlled through the drive control of the cold water circulation pump (553).

For example, in order to control the air inside the greenhouse in a hot and dry state (RH 40%, 33℃) to appropriate relative humidity and temperature conditions (e.g., RH 70%, 20℃) during the day (based on a clear day) in the summer or winter, the above instructions are required. After primary cooling heat exchange by the cooling control heat exchange means 522, it is desirable to supply air with an appropriate temperature and humidity to the greenhouse without reheating through secondary heating heat exchange by the warming control heat exchange means 532.

On the other hand, when it is desired to control the heating of the greenhouse, the operation of the cold water circulation pump is stopped under the control of the thermal environment control unit (not shown), and the heat exchange air intake fan 570 is driven to suck the greenhouse air, while the temperature control water circulation pump is operated. By driving (543) to circulate hot water into the hot water chamber (531), the air flowing into the temperature control room (512) is heated through the heat exchange action of the heating control heat exchange means (532) and supplied to the greenhouse.

Here, the heat exchange action of the temperature-controlled water circulation pump 543 is performed because one side of the vibration-type heat pipe 532a is immersed in the hot water of the hot water chamber 531 and the other side is in contact with the air of the temperature control room 512. Due to the action of the heat pipe, heat exchange between the hot water and the air in the temperature control room 512 occurs through evaporation and condensation of the working fluid without external power, thereby increasing the temperature of the air.

For example, if the temperature in the greenhouse drops rapidly due to the cold outside air at night or early in the morning during the winter (RH 90%, 5℃), if the temperature drops further, serious damage will occur due to condensation on the crops, as mentioned above. Heating control is required. In this case, the operation of the cold water circulation pump is stopped so that the heat exchange action of the cooling control heat exchange means (522) is not performed, and only the temperature control water circulation pump (543) is operated to adjust the low temperature and high humidity greenhouse air to a medium temperature and dry appropriate moist air condition. It can be supplied to greenhouses.

Meanwhile, dehumidification control uses a combination of the above-described cooling control and heating control, and operates both the temperature control water circulation pump 543 and the cold water circulation pump under the control of the thermal environment control unit (not shown), while the heat exchange air intake fan 570 ) is driven to suck the high temperature air from the upper part of the greenhouse 100. At this time, the temperature of the wet air flowing into the cooling/humidity control room 511 is greatly lowered through the heat exchange action of the cooling control heat exchange means 522, so that the moisture is condensed into water, thereby lowering the humidity. After going through this humidity control process, when the cooled air flows into the temperature control room 512, it receives heat through the heat exchange action of the heating control heat exchange means 532, rises, and returns to air with appropriate humidity and temperature (e.g., relative temperature). It is converted into medium-temperature dry air with a humidity of about 40% and then supplied to the greenhouse.

In addition, during the dehumidification process by the vibrating heat pipe (522a) applied as the cooling control heat exchange means (522), a hydrophobic coating portion (not shown) is formed on the surface, so the condensate forms more effectively and slides and separates more quickly. Since thermal resistance does not occur, there is an advantage in that more effective dehumidification and cooling effects are achieved.

As described above, according to the complex thermal environment control system for a greenhouse using waste heat according to an embodiment of the present invention, when the greenhouse is in a high temperature state due to the radiant energy of the sun, the internal air chamber portion of the fluid heat exchange treatment tank 200 Since it is cooled by the internal air heat exchange means 300 at (210) and then re-supplied to the greenhouse, there is no need to operate a separate air conditioning device, and there is no need to open the side window or ceiling window.

In addition, the thermal storage water stored in the thermal storage tank 610 is supplied to the hot water chamber 531 of the complex thermal environment control unit 500, which will be described later, through the temperature control water circulation line 540 and can be used as energy for temperature control in the winter, etc., thereby reducing energy costs. can save.

As described above, according to the heat exchange device for heat storage and cooling for a greenhouse according to the present invention, energy for cooling and heating of the greenhouse can be saved, and waste due to leakage of CO ₂ applied to the greenhouse due to the non-opening of the side and ceiling windows can be reduced. By blocking, the fertilization effect can be maximized.

Terms such as “include,” “comprise,” or “have,” as used above, unless specifically stated to the contrary, mean that the corresponding component may be present, and do not exclude other components. It should be interpreted that it may further include other components. All terms, including technical or scientific terms, unless otherwise defined, have the same meaning as generally understood by a person of ordinary skill in the technical field to which the present invention pertains. Commonly used terms, such as terms defined in a dictionary, should be interpreted as consistent with the contextual meaning of the related technology, and should not be interpreted in an idealized or overly formal sense unless explicitly defined in the present invention.

The configuration and operation of the complex thermal environment control system for a greenhouse using waste heat according to an embodiment of the present invention described above has been described, but this is illustrative and those skilled in the art should not depart from the technical spirit of the present invention. It will be understood that it is possible to substitute and modify some of the above-described embodiments within the scope of the present invention.

Therefore, the scope of protection of the present invention should be understood to extend to the invention described in the patent claims and equivalents thereof.

100: Greenhouse 110: Internal air moving part
120: Internal air intake fan 140: Supply air moving part
200: Fluid heat exchange treatment tank 210: Internal air chamber section
220: Water chamber part 230: Heat exchange means installation part
300: Internal air heat exchange means 310: Vibrating heat pipe
400: Heat pump device 500: Complex thermal environment control unit
510: air passage part 510a: air passage enclosure
511 Cooling/Humidity Control Room 512 Temperature Control Room
513: Temperature and humidity room connection 520: Air cooling means
521: Cold water chamber 522: Cooling control heat exchange means
522a, 532a: Vibrating heat pipe 530: Air heating means
531: Hot water chamber 532: Heating control heat exchange means
540: Temperature control water circulation line 550: Cold water circulation line
600: Heat storage unit 610: Heat storage tank
620: Heat storage unit circulation line 700: Cold water supply unit
710: Cold water storage unit 720: Cold water generation unit
721: Cold water generation tank 722: External air heat exchange means
722a: Vibrating heat pipe 723: External air receiving room
724: Cold water generation room 729: Cold water path guide bulkhead
730: Water supply line for cold water production 740: Cold water discharge line
750: Pump for cold water production 760: Cold water production room temperature detection unit
770: Cold water storage temperature detection unit 780: Cold water generation control unit
795: External air blowing fan

Claims (14)

In the complex thermal environment control system of a greenhouse using waste heat,
A greenhouse formed to allow sunlight to enter;
An internal air moving part having an internal air inlet through which the internal air of the greenhouse flows in and an internal air outlet through which the internal air flowing into the internal air inlet is discharged;
a fluid heat exchange treatment tank provided with an internal air receiving chamber for receiving internal air discharged from the internal air discharge unit, and a water receiving chamber partitioned from the internal air receiving chamber for receiving water;
Internal air heat exchange means for performing heat exchange between the internal air contained in the internal air receiving chamber and the water contained in the water containing chamber;
a heat pump device disposed to recover heat from the water in the water storage chamber;
a heat storage unit disposed to store heat recovered by the heat pump device;
a supply air moving unit that supplies heat exchange air from the internal air receiving chamber that has undergone a heat exchange process of the internal air heat exchange means to the greenhouse; and
A complex thermal environment control system for a greenhouse using waste heat, comprising: a complex thermal environment control unit installed in the supply air moving unit to convert the heat exchange air into supply air with a set temperature and humidity.
According to paragraph 1,
The fluid heat exchange treatment tank,
an internal air chamber portion in which the internal air receiving chamber is provided, an internal air inlet connected to the internal air discharge unit, and an internal air outlet connected to the supply air moving unit are formed;
a water chamber portion disposed in contact with the internal air chamber portion, the water receiving chamber provided therein, a water discharge port to which a water supply line is connected, and a water inlet port to which a heat storage recovery line is connected; and
A heat exchange means installation part provided on a boundary wall of the internal air chamber part and the water chamber part so that the internal air heat exchange means is installed. A complex thermal environment control system for a greenhouse using waste heat, comprising a.
According to paragraph 2,
The internal air movement unit is disposed in the upper part of the greenhouse and extends to be bent downward in the air intake section toward the air intake section provided with the internal air inlet, and the fluid heat exchange treatment tank, and has the internal air discharge section formed at the end. It consists of an air inlet duct with a section,
The supply air moving part is composed of an air supply duct having a connection section connected to the internal air outlet, and an air supply section connected to the connection section and disposed in the greenhouse and having an outlet,
A complex thermal environment control system for a greenhouse using waste heat, characterized in that it is provided with an internal air intake fan disposed in the air inlet duct and a heat exchange air intake fan installed in the supply air moving part.
According to paragraph 1,
The complex thermal environment control unit,
An air passage part through which air moves; Air cooling means for cooling and controlling humidity of the air passing through the air passage unit; and an air heating means for controlling the temperature of the air passing through the air passage unit.
According to clause 4,
The air passage part consists of an air passage box connected to the supply air moving part,
The air cooling means includes a cold water chamber formed on one side of the ventilation passage enclosure and through which cold water circulates, and a cooling control heat exchange means installed between the cold water chamber and the air passage portion,
The air heating means includes a hot water chamber formed on the other side of the ventilation passage box and circulating hot water, and a heating control heat exchange means installed between the hot water chamber and the air passage portion. Thermal environment control system.
According to clause 5,
The hot water chamber is connected to a temperature-controlled water circulation line to circulate hot water,
The cold water chamber is connected to a cold water circulation line to circulate cold water,
The cooling control heat exchange means is a vibrating heat pipe in which one side is immersed in the cold water of the cold water chamber and the other side is disposed in the air passage to transfer the cold air of the cold water supplied by evaporation and condensation of the working fluid to the air without external power. composed,
The heating control heat exchange means is a vibrating heat pipe with one side immersed in the hot water of the hot water chamber and the other side disposed in the air passage to transfer the heat of hot water supplied by evaporation and condensation of the working fluid to the air without external power. It is composed,
The internal air heat exchange means is composed of a vibrating heat pipe with one side exposed to the internal air receiving chamber and the other side immersed in the water receiving chamber to transfer the heat of the internal air to the water by evaporation and condensation of the working fluid without external power. A complex thermal environment control system for greenhouses using waste heat.
According to clause 6,
The air passage enclosure includes a cooling/humidity control room in which air humidity control is performed, a temperature control room in which air temperature control is performed, and a temperature and humidity room connection unit connecting the cooling/humidity control room and the temperature control room,
A complex greenhouse using waste heat, characterized in that the cooling/humidity control room is arranged in the inflow direction of the air so that the temperature is controlled and supplied after the humidity of the air is controlled, and the temperature and humidity room connection part and the temperature control room are arranged in succession. Thermal environment control system.
In clause 7,
The temperature-controlled water circulation line includes a temperature-controlled water supply line connected to the hot water chamber to supply hot water, and a temperature-controlled water recovery line connected to recover hot water that has undergone a heat exchange process via the hot water chamber,
The cold water circulation line includes a cold water supply line connected to the cold water chamber to supply cold water, and a cold water recovery line connected to recover cold water that has undergone a heat exchange process via the cold water chamber,
A temperature-controlled water circulation pump installed in the temperature-controlled water circulation line; and a cold water circulation pump installed in the cold water circulation line. A complex thermal environment control system for a greenhouse using waste heat, comprising:
According to clause 6,
The cold water chamber is formed with a cold water path guide partition wall so that the incoming cold water is discharged while forming a 'U' shaped flow path,
One side of the vibrating heat pipe applied as the cooling control heat exchange means is disposed in one side partition partitioned by the cold water path guide partition wall,
The hot water chamber is formed with a hot water path guide partition wall so that the incoming hot water is discharged while forming a 'U' shaped flow path,
A complex thermal environment control system for a greenhouse using waste heat, characterized in that one side of the vibrating heat pipe applied as the heating control heat exchange means is disposed in one side partition partitioned by the hot water path guide partition.
According to paragraph 1,
A complex thermal environment control system for a greenhouse using waste heat, further comprising a cold water supply unit configured to supply cold water to the complex thermal environment control unit.
According to clause 10,
The cold water supply unit includes a cold water storage unit in which cold water is stored; and a cold water generator that cools the water in the cold water storage unit. A cold water production tank equipped with a cold water production chamber in which water is received; and an external air heat exchange means that performs heat exchange between the external air contained in the external air receiving chamber and the water contained in the cold water generating chamber.
According to clause 11,
The cold water supply unit includes a cold water production water supply line connected to supply water from the cold water storage unit to the cold water production chamber; a cold water discharge line connected so that cold water generated via the cold water generation chamber is recovered from the cold water storage unit; And a cold water production pump connected to the cold water production water supply line or the cold water discharge line,
The external air heat exchange means is disposed on one side in the external air receiving chamber and on the other side in the cold water generating chamber to transfer the cold air of the external air to the water filled in the cold water generating chamber by evaporation and condensation of the working fluid without external power. A complex thermal environment control system for a greenhouse using waste heat, characterized by consisting of a vibrating heat pipe.
According to clause 12,
A cold water production room temperature sensing unit that detects the temperature of the cold water production room; And a cold water storage unit temperature sensing unit that detects the temperature of the cold water storage unit,
Controlling the operation of the cold water production pump so that the cold water temperature of the cold water storage unit is set to a set temperature based on the signal detected by the cold water storage unit temperature detection unit and the cold water production room temperature detection unit, wherein the cold water production room temperature detection unit A cold water production control unit that operates the cold water production pump to perform a control operation to prevent freezing in the cold water production chamber when the temperature of the water sensed is below the set temperature. A complex greenhouse using waste heat, comprising a. Thermal environment control system.
According to clause 13,
a cold water generator case formed to surround the outside of the external air receiving chamber;
External air is introduced into the external air receiving chamber under the control of the cold water generation control unit so that the cold water temperature of the cold water storage unit is at a set temperature based on the signal detected by the cold water storage unit temperature detection unit and the cold water production room temperature detection unit. an external air blowing fan operated to and
It further includes an external temperature sensing unit that detects the temperature of the external air receiving chamber,
The cold water generation control unit is configured to perform a control operation to stop the operation of the external air blowing fan when the temperature difference detected based on the detection signal detected by the external air temperature detection unit and the cold water production room temperature detection unit is smaller than a set range. A complex thermal environment control system for greenhouses using waste heat.

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