KR20110054477A - System for fuel-saving type low carbon green agriculture plant using airsource heat pump, and method of the same - Google Patents

Abstract

PURPOSE: A fuel saving type low carbon green agricultural facility operating system using an air-source heat pump, and an operation method thereof are provided to remarkably reduce the energy cost, and to prevent the generation of greenhouse gas. CONSTITUTION: A fuel saving type low carbon green agricultural facility operating system comprises the following: an air-source heat pump supplying hot water to a first hot water tank(110); plural radiators(131) receiving the hot water from the first hot water tank for heating internal air; and a second hot water tank(160) for storing the hot water flowing from the first hot water tank, and cooled water discharged from the radiators. The hot water and the cooled water inside the second hot water tank are supplied to the air-source heat pump for heating.

Description

System For Fuel-saving type Low Carbon Green Agriculture Plant Using Airsource Heat Pump, And Method Of The Same}

The present invention relates to a fuel-saving low-carbon green agricultural facility operating system and method using an air heat heat pump, and more particularly, to low-carbon green agricultural facility in which energy cost is significantly reduced without generating greenhouse gas (CO ₂ ) ( Low Carbon Green Agriculture Plant (LCGAP) The present invention relates to a fuel-saving low carbon green agricultural facility operating system and method using an air heat heat pump providing agricultural methods.

Currently, a plastic house that grows 400 pyeong of pepper in a vegetable farm needs 140 million Kcal per year (refer to Table 1 below: Annual amount and amount of energy required for each fuel), depending on the energy source used. Facility costs and expenses vary widely.

use
energy unit Unit price (KRW) Consumption Price
(won) Calorie used
(Kcal) Saving ratio
(%) Via ℓ 1,400 15,000 21,000,000 138 million 748 Coal kg 400 20,000 8,000,000 140 million 383 General Electric Kw 51 160,000 8,160,000 133.7 million 320 LCGAP Electric Kw 51 55,000 2,805,000 137.6 million 100

Petroleum and coal are cheaper in operating a plastic house, but fuel costs due to high oil prices are excessively consumed, and more cost is expected due to the recent burden of contribution due to excessive greenhouse gas (CO ₂ ) generation (see Table 2 below). Electric energy, which is a clean energy, takes a long payback period due to excessive initial facility costs, and farmers are reluctant to overinvest, making it difficult to introduce clean energy.

(Based on 1,320 m ^{2 of} vinyl house) Heating method Heat source cost
(won) Additional Facility Cost
(won) Total cost
(won) Durable
(year) Diesel Heater 4,000,000 4,000,000 8,000,000 6 Coal heating fan 6,000,000 5,000,000 11,000,000 4 Electric hot air fan 15,000,000 5,000,000 20,000,000 10

As shown in Table 1 and Table 2 above, in reality, the number of investments is expected to be delayed by more than two times by shortening the crop cultivation to save fuel costs when using diesel, so that farmers who are consumers are evading investment.

Moreover, as the free trade agreement (FTA) agreement is expanded, it is difficult for farmers to meet the profitability of agriculture, and the country is no longer able to run agriculture due to high oil prices and the expected increase in greenhouse gas share.

Therefore, the introduction of low carbon green agriculture plant (LCGAP) farming method, which does not generate greenhouse gas (CO ₂ ) and dramatically reduces energy costs, is urgently needed.

The technical problem to be achieved by the present invention in order to solve the above-mentioned problems, to provide a low carbon green agriculture plant (LCGAP) farming method that the greenhouse gas (CO ₂ ) is not generated and the energy cost is significantly reduced The present invention provides a fuel-saving low carbon green agricultural facility operating system and method using an air heat heat pump.

In addition, another technical problem to be achieved by the present invention is to provide a fuel-saving low-carbon green agricultural facility operating system and method using an air heat heat pump that produces a high-temperature heat generator as a low temperature heat source.

In addition, another technical problem to be achieved by the present invention is to operate a fuel-saving low-carbon green agricultural facility using an environmentally friendly air heat heat pump that protects the environment by preventing air pollution or various pollution since it does not use fuels such as fossil or petroleum. A system and method are provided.

In addition, another technical problem to be achieved by the present invention is to provide a fuel-saving low-carbon green agricultural facility operating system and method using an air heat heat pump that supplies more energy in the form of thermal energy than the input energy required for the machinery. .

In addition, another technical problem to be achieved by the present invention is to provide a fuel-saving low-carbon green agricultural facility operating system and method using an environmentally friendly air heat heat pump that can recover the waste heat to the maximum.

In addition, another technical problem to be achieved by the present invention is a fuel-saving low carbon using an air heat heat pump that can reduce the fuel cost by 1/3 or more (40 ~ 70%) compared to the existing boiler system and can reduce the maintenance cost The present invention provides a green agricultural facility operating system and method thereof.

In addition, another technical problem to be achieved by the present invention is to provide a fuel-saving low-carbon green agricultural facility operating system and method using an air heat heat pump that is stable in price and supply of energy and can receive tax support benefits.

In addition, another technical problem to be achieved by the present invention is to provide a fuel-saving low-carbon green agricultural facility operating system and method using an air heat heat pump capable of simultaneously supplying cooling, heating, cold and hot water.

In addition, another technical problem to be achieved by the present invention is to provide a fuel-saving low-carbon green agricultural facility operating system and method using an air heat heat pump that does not need defrost operation in winter (out-air temperature -15 ℃). .

In addition, another technical problem to be achieved by the present invention is to provide a fuel-saving low-carbon green agricultural facility operating system and method using an air heat heat pump with a constant decrease in efficiency even when conditions such as external temperature by controlling the amount of refrigerant constant. have.

In addition, another technical problem to be achieved by the present invention is to propose a fuel-saving low-carbon green agricultural facility operating system and method using an air heat heat pump that has no problem during summer operation by applying the overheat operation compensation device.

In addition, another technical problem to be achieved by the present invention is to constantly control the hot water outlet temperature (for example, 60 ℃), the inlet temperature compensation device by applying the inlet temperature (for example, always 7 ℃) always constant in winter To provide a fuel-saving low carbon green agricultural facility operating system and method using an air heat heat pump that can be controlled in a simple manner.

In addition, another technical problem to be achieved by the present invention is a fuel-saving low-carbon green agricultural facility operating system using a plurality of radiators installed in a plastic house and an air heat heat pump to be heated at the same time by dissipating heat from at least one hot water tank and To show you how.

As a means for solving the above-described technical problem, the invention as claimed in claim 1, "In the method of operating a low-carbon green agricultural facility, (a) supplying hot water from the air heat heat pump to the first hot water tank; (b) supplying hot water stored in the first hot water tank to a plurality of radiators to heat indoor air and supplying some hot water stored in the first hot water tank to a second hot water tank; (c) mixing and storing cold water radiated from the plurality of radiators and hot water partially supplied from the first hot water tank in a second hot water tank; And (d) repeating the steps (a) to (c) after supplying the cold and hot water stored in the second hot water tank to the air heat heat pump to heat the hot water. And a method of operating a fuel-saving low carbon green agricultural facility, wherein the first and second hot water tanks are installed together inside the heating place to be heated simultaneously.

According to the invention of claim 2, "The method of operating a low-carbon green agricultural facility according to claim 1, further comprising: one or two or more hot water tanks are disposed between the second hot water tank and the air heat heat pump, and the water is sequentially supplied. It provides a method for operating a fuel-saving low-carbon green agricultural facility, characterized in that the storage and delivery.

According to the invention of claim 3, the air heat heat pump of claim 1 is capable of simultaneously supplying cooling, heating, cold and hot water, and transferring a low temperature heat source to a high temperature and a high temperature heat source to a low temperature. It provides fuel-saving low carbon green agriculture facility operating method characterized by being air-conditioning device.

In addition, as another means for solving the above-described technical problem, the invention described in claim 4, "In a low-carbon green agricultural facility operating system, cooling, heating, cold and hot water can be supplied simultaneously, A heat pump boiler for transferring the heat source at high temperature and the high temperature heat source at low temperature; A first hot water tank receiving and storing hot water from the heat pump boiler and supplying the stored hot water to a hot water distributor and a second hot water tank; A hot water distributor configured to distribute and supply hot water supplied from the first hot water tank to a plurality of radiators installed at a heating place; A cold water recoverer for recovering cold water radiated from the plurality of radiators; And at least one hot water tank for mixing and storing the cold water recovered from the cold water recoverer and the hot water supplied from the first hot water tank, and supplying the stored cold hot water to the heat pump boiler. It provides a fuel-saving low-carbon green agricultural facility operating system, characterized in that the at least one hot water tank is installed together in the heating place to be heated at the same time.

The invention according to claim 5, wherein the low carbon green agricultural facility operating system further comprises: a circulation pump for supplying the cold water recovered through the cold water recoverer to the at least one hot water tank. Fuel-saving low carbon green agriculture facility operation system to assume.

The invention according to claim 6, wherein the low carbon green agricultural facility operating system further comprises: one or more hot water tanks sequentially between the second hot water tank and the heat pump boiler. It provides a fuel-saving low-carbon green agricultural facility operating system characterized in that it stores and delivers.

The invention as set forth in claim 7, wherein the heater pump boiler comprises: a compressor (10) for compressing a working fluid to produce a relatively high temperature and high pressure; A plurality of heat exchangers (20, 20 ') for dissipating heat of the working fluid from the compressor (10); An expansion valve (30) for expanding the working fluid heat-exchanged in the heat exchanger (20, 20 ') to make a relatively low temperature low pressure state; Switching valves (32, 33, 34) for delivering the working fluid out of the expansion valve (30) in an optional path; A plurality of heat absorbers (40, 41, 42) for absorbing heat supplied from the surroundings to the working fluid selectively transferred through the switching valves (32, 33, 34) to evaporate the working fluid; And a hot water tank (50) for storing hot water generated by exchanging cold water supplied to the heat exchanger (20, 20 ') with a working fluid. To provide.

The invention as set forth in claim 8, wherein the heat absorber (40, 41, 42) is supplied from groundwater to a working fluid that is selectively delivered through the switch valve (32, 33, 34). A first heat absorber 40 for absorbing heat to allow the working fluid to evaporate; Second heat absorber for absorbing the heat of the waste hot water from the hot water tank 50 to the working fluid selectively transferred through the switching valve (32, 33, 34) to evaporate the working fluid ( 41); And a third heat absorber 42 for absorbing heat of outdoor air to the working fluid selectively transferred through the switching valves 32, 33, 34 to allow the working fluid to evaporate. And 3 heat absorbers 40, 41 and 42 are used alone or in combination, respectively.

The invention according to claim 9, wherein the heater pump boiler comprises: a heat exchange cycle comprising a compressor 210, a first heat exchanger 220, an expansion valve 230, and a second heat exchanger 240; and; A hot water tank 250 for storing hot water generated by heat-exchanging the working fluid with the cold water supplied to the first heat exchanger 220; An auxiliary heat exchanger (225) installed between the compressor (210) and the expansion valve (230) to receive a working fluid delivered from the compressor (210); An external water tank 260 which receives heat of the working fluid from the auxiliary heat exchanger 225 and supplies water for providing heat for evaporation of the working fluid in the second heat exchanger 240; And a conduit 280 connecting the compressor 210, the first heat exchanger 220, the expansion valve 230, and the second heat exchanger 240 so that the pressure of the working fluid must be a set pressure. Pressure control valves 270 and 270 'to be flowed along the second heat exchanger, and the auxiliary heat exchanger 225 is connected in parallel with the first heat exchanger 220, and the inlet side of the auxiliary heat exchanger 225 And a control valve 222 for controlling the amount of the working fluid delivered from the compressor 210. "

According to the invention of claim 10, "The pressure regulating valves 270 and 270 'according to claim 9 and the high-pressure side pressure regulating valve 270 is provided between the first heat exchanger 220 and the expansion valve 230 and And a low pressure side pressure control valve 270 'installed between the compressor 210 and the second heat exchanger 240, and the high pressure side pressure control valve 270 and the low pressure side pressure control valve 270'. It provides a fuel-saving low-carbon green agricultural facility operating system, characterized in that it further comprises a liquid heater 228 for the heat exchange between the working fluid passed through each.

The invention as set forth in claim 11, wherein the heater pump boiler comprises: a compressor (300) for compressing a working fluid to produce a relatively high temperature and high pressure; A hot water generating heat exchanger (304) for generating hot water by the heat of the working fluid from the compressor (300); A first expansion valve 314 that selectively receives and expands the working fluid heat-exchanged in the hot water generating heat exchanger 304 to a relatively low temperature and low pressure; A wastewater heat exchanger (316) passing through the waste hot water supplied from the outside and receiving heat from the waste hot water to evaporate the working fluid from the first expansion valve (314) to the compressor; A second expansion valve 315 selectively receiving the working fluid heat-exchanged in the hot water generating heat exchanger 304 to expand and to make it into a relatively low temperature low pressure state; A cold water side heat exchanger 320 in which heat exchange is performed to evaporate the working fluid from the second expansion valve 315 to make the water supplied from the cold water tank into cold water; A cold storage tank (322) for storing water that exchanges heat with the working fluid in the cold water side heat exchanger (320); And a cold water generation heat exchanger 326 in which cold water is generated by heat exchange between the water stored in the cold storage tank 322 and the water of the cold water tank. to provide.

The invention as set forth in claim 12, wherein the heater pump boiler is provided between the hot water generating heat exchanger 304 and the first and second expansion valves 314 and 315, respectively. First and second switching valves 310 and 312 to selectively transfer working fluid to expansion valves 314 and 315; And a circulation pump 324 for circulating water between the cold storage tank 322 and the cold water side heat exchanger 320, wherein the waste water heat exchanger 316 sucks air around the device and waste water heat exchanger 316. A fuel-saving low-carbon green agricultural facility operating system, comprising: an air pump 318 for supplying the waste water inside.

According to claim 13, the invention according to claim 4, wherein the heater pump boiler comprises: a compressor (410) for compressing the working fluid to make it relatively high temperature and high pressure; A first heat exchanger 420 for generating hot water by the heat of the working fluid from the compressor 410; An expansion valve 430 which expands the working fluid heat-exchanged in the first heat exchanger 420 to a relatively low temperature low pressure state; A second heat exchanger 440 which receives the heat of the waste hot water and evaporates the working fluid from the expansion valve 430 to the compressor 410 and passes the waste hot water supplied from the outside; And a pressure regulating valve 470 which is selectively opened according to the state of the working fluid flowing into the compressor 410 to transfer the high temperature gas working fluid passing through the compressor 410 to the outlet of the expansion valve 430. The second heat exchanger 440 has a relatively large capacity, and a relatively long waste hot water flow path is formed in the heat exchange chamber 442 inside the housing constituting the exterior by a partition plate. A heat exchange tube is installed inside the waste hot water flow path, so that the working fluid is heat-exchanged while moving from the downstream portion to the upstream portion along the heat exchange tube.

The invention according to claim 14, "The heater pump boiler according to claim 13, wherein: the second heat exchanger (440) further comprises a circulation pump 450 for transferring the waste hot water from the downstream portion of the waste hot water flow path upstream. It is provided, and the inside of the heat exchange chamber 442 of the second heat exchanger 440 is communicated with the downstream portion of the waste water hot water flow path and formed long in the upper and lower portions of the heat exchange chamber 442, the water level detection having a discharge pump 446 Further comprising a portion 445, between the first heat exchanger 420 and the expansion valve 430 is further provided with a receiver 422, the working fluid is collected, the receiver 422 is a receiver ( 422) The fuel-saving low-carbon green agricultural facility operating system, characterized in that it further comprises an automatic safety valve (425) for supplying the working fluid to the outlet side of the expansion valve (430) when the working fluid pressure inside the predetermined. Is provided.

According to the present invention, a low carbon green agriculture plant (LCGAP) that does not generate greenhouse gas (CO ₂ ) and dramatically reduces energy costs by using an air heat heat pump that produces a high-temperature heat generator as a low temperature heat source. We can provide farming method.

In addition, waste heat is recovered as much as possible without the use of fossil or petroleum fuel, which is environmentally friendly by preventing air pollution and various pollutions. %) It has a very good effect which can reduce and reduce maintenance cost.

In addition, the price and supply of energy is stable and can receive tax support benefits, and can simultaneously supply cooling, heating, and cold / hot water.

In addition, there is no defrost in winter (outside temperature -15 ℃), eliminating the need for defrosting, controlling the amount of refrigerant constantly, and reducing efficiency even when conditions such as outside temperature change. There is no problem at all.

In addition, the hot water outlet temperature (for example, 60 ℃) can be constantly controlled, and the inlet temperature compensation device is applied to the effect of controlling the inlet temperature (for example, 7 ℃) always in the winter.

In addition, when switching from the use of fossil energy to the technology of the present invention, the government can reduce the tax revenue caused by the supply reduction of duty-free oil supplied to farmers internally and reduce the disturbance of the oil market due to the duty-free oil.

For example, the tax-exempt tax for using 15,000 liters of diesel fuel per year on a 400-pyeong basis is about 600 won / l (1,400 won for market price, 800 won for tax-free), and the annual revenue of 9,000,0000 won can be secured.

In addition, the number of externally block the rural subsidy fertilizer into force of the FTA negotiations and the greenhouse gas CO ₂ reduction factor is approximately 17,25 tons per year (ton) is caused by greenhouse gas (CO ₂₎ contributions based on years of about 440,000 Liyuan (15 Savings of 1,700 won × 17.25 tons) can be generated.

DETAILED DESCRIPTION Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention. As those skilled in the art would realize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention. In the drawings, parts irrelevant to the description are omitted in order to clearly describe the present invention, and like reference numerals designate like parts throughout the specification.

Hereinafter, specific technical contents to be implemented in the present invention will be described in detail with reference to the accompanying drawings.

An embodiment of a low carbon green agricultural facility operating system

1 is an overall configuration diagram of a fuel-saving low carbon green agricultural facility operating system using an air heat heat pump according to a preferred embodiment of the present invention.

Fuel-saving low-carbon green agricultural facility operating system using the air heat heat pump, as shown in Figure 1, the heat pump boiler 100, the first hot water tank 110, hot water distributor 120, vinyl house 130 The plurality of radiators 131, the cold water recoverer 140, the circulation pump 150, the second hot water tank 160, and the third hot water tank 170 are installed in the vinyl house 130.

Therefore, since the first to third hot water tanks 110, 120, and 130 are installed in the vinyl house 130, energy is reduced as the heat source generated from the hot water tank itself is used as a heat source for heating the vinyl house 130. In the present invention, the number of hot water tanks installed in the vinyl house 130 is not necessarily limited to the number set forth above or the accompanying drawings, and may be suitably set according to the needs of consumers or the needs of manufacturers. I can adjust it.

Here, the heat pump boiler 100 is an air heat heat pump capable of simultaneously supplying cooling, heating, cold and hot water, and functions to transfer a low temperature heat source to a high temperature heat source using air heat and to transfer the high temperature heat source to a low temperature heat source. . The heat pump boiler 100 as the air heat heat pump supplies more energy in the form of thermal energy than the input energy required for the machinery.

The heat pump boiler 100 does not generate pollutants such as greenhouse gas (CO ₂ ) because it uses the electricity to recover the waste heat as much as possible without using fuel such as fossil or petroleum, and the energy cost is drastically reduced. It can provide low carbon green agricultural facilities (LCGAP) farming.

The heat pump boiler 100 will be described in more detail in the embodiments of FIGS. 4 to 8 to be described later.

The first hot water tank 110 receives and stores hot water from the heat pump boiler 100, supplies the stored hot water with the hot water distributor 120, and supplies some stored hot water to the second hot water tank 160. do. At this time, the reason for sending the hot water stored in the first hot water tank 110 to the second hot water tank 160 is that the hot water (cold water) radiated by heating through the radiator 131 has a relatively low temperature due to heat radiation. Since it is to have a relatively high hot water heated in the heat pump boiler 170 is mixed in the second hot water tank 160 to raise to a predetermined temperature and to be supplied to the heat pump boiler 100. Accordingly, in the heat pump boiler 100, the water heated to a predetermined temperature by the mixing of hot water and cold water in the second hot water tank 160 is heated to hot water of a predetermined temperature (for example, 60 ° C. or more). This makes it possible to reduce energy consumption.

Referring to FIG. 1, the hot water distributor 120 receives hot water from the first hot water tank 120 and distributes the hot water distributor 120 to a plurality of radiators 131 installed at a heating place (for example, the vinyl house 130). Supply. Although not shown in FIG. 1, the hot water distributor 120 may simultaneously supply cold / hot water to a bathroom, a kitchen, and the like.

The plurality of radiators 131 is a device for dissipating heat into the atmosphere by passing hot water through a conduit with many fins made of a thin metal plate around it, and is also commonly referred to as a radiator.

1 illustrates an example in which the plurality of radiators 131 and the first to third hot water tanks 110, 160, and 170 are installed in the vinyl house 130, but may be installed in other heating facilities or places. In this case, the plurality of radiators 131 and the first to third hot water tanks 110, 160, 170 may be cooled to the vinyl house 130 or another heating facility by the cooling or heating operation of the heat pump boiler 100. Perform heating

The cold water recoverer 140 recovers hot water (cold water) radiated to the atmosphere through the plurality of radiators 131, and the circulation pump 150 collects the cold water recovered through the cold water recoverer 140. It serves to supply to the second hot water tank 160. At this time, the circulation pump 150 after the hot water heated in the heat pump boiler 100 is radiated through a plurality of radiators 131 installed in the vinyl house 130 and back to the heat pump boiler 100 again. It circulates water to come.

Therefore, the circulation pump 150 may be installed between the cold water recoverer 140 and the second hot water tank 160 as shown in FIG. 1, but may be installed elsewhere. For example, the first hot water tank 110 and the hot water distributor 120, or between the radiator 131 and the cold water recovery unit 140 may be installed in the place where the water can be circulated Can be installed.

The second hot water tank 160 mixes the cold water recovered from the cold water recoverer 140 and the hot water supplied from the first hot water tank 110 to store and store the cold / hot water stored in the third hot water tank 170. Supply. At this time, the cold and hot water stored in the second hot water tank 160 is mixed with the cold water recovered from the cold water recoverer 140 and the hot water supplied from the first hot water tank 110 to provide the cold and hot water having an intermediate temperature between the cold water and the hot water. Will be saved.

The third hot water tank 170 serves to receive and store cold and hot water stored in the second hot water tank 160, and serves to supply the cold and hot water stored therein to the heat pump boiler 100.

Here, the first to third hot water tanks 110, 160 and 170 are installed in the vinyl house 130, and serve to heat the air inside the vinyl house 130 together with the plurality of radiators 131.

Finally, the heat pump boiler 100 receives the cold and hot water stored in the third hot water tank 170 to be heated to make hot water of a predetermined temperature (for example, 60 ℃ or more) the first hot water tank 110 To be discharged. In this case, the heat pump boiler 100 is energy because the cold water recovered from the cold water recoverer 140 and the hot water supplied from the first hot water tank 110 is mixed to heat the cold and hot water having an intermediate temperature between the cold water and the hot water. Reduce consumption

According to the present invention, the vinyl house 130 is equipped with a hot water excel pipe and a heat transfer radiator 131 that is easy to heat transfer, the hot water storage to minimize the heat loss is stored in the first to third hot water in the greenhouse By installing three tanks 110, 160 and 170 together, the heat produced is stored for a long time. At this time, the first to third hot water tanks (110, 160, 170), but it is preferable to use the 2,000 liter capacity may be configured using a hot water tank larger or smaller than this depending on the purpose or place of use.

Low carbon  Other of green agricultural facility operating system Example

2 is an overall configuration diagram of a fuel-saving low carbon green agricultural facility operating system using an air heat heat pump according to another exemplary embodiment of the present invention, and shows an example of using two hot water tanks installed in the vinyl house 130. .

As before, the first and second hot water tanks 110 and 160 installed inside the vinyl house 130 serve to heat the air inside the vinyl house 130 together with the plurality of radiators 131.

Another embodiment of a low carbon green agricultural facility operating system

3 is an overall configuration diagram of a fuel-saving low-carbon green agricultural facility operating system using an air heat heat pump according to another preferred embodiment of the present invention, an example of using two or more hot water tanks installed in the vinyl house 130 is shown. It is shown.

Here, the plurality of hot water tanks 180 installed in the vinyl house 130 may simultaneously heat the air in the vinyl house 130 together with the plurality of radiators 131 installed together in the vinyl house 130. This can improve thermal efficiency and reduce energy consumption.

Embodiment of the heat pump boiler 100

Figure 4 is a configuration diagram showing an example of the heat pump boiler 100 shown in Figures 1 to 3, the heat pump type hot water generator (registration number; No. 20-0270411, registration date: 2002.03) used in the present invention .19).

The heat pump type hot water generator of FIG. 4 includes a compressor 10 for compressing a working fluid to a relatively high temperature and high pressure, and a plurality of heat exchangers 20 for dissipating heat of the working fluid from the compressor 10. 20 '), an expansion valve 30 which expands the working fluid heat-exchanged by the heat exchangers 20 and 20' to make it at a relatively low temperature and a low pressure state, and a selective path through the working fluid exiting the expansion valve 30. A plurality of switching valves (32, 33, 34) to be delivered to the plurality of, and the working fluid to be evaporated by absorbing the heat supplied to the working fluid selectively passed through the switching valves (32, 33, 34) Heat absorbers (40, 41, 42), and a hot water tank (50) for storing hot water generated by heat exchange with the working fluid cold water supplied to the heat exchangers (20, 20 ').

Here, the heat absorbers (40, 41, 42), the first to allow the working fluid to evaporate by absorbing the heat supplied from the ground water to the working fluid selectively passed through the switching valves (32, 33, 34) The working fluid is evaporated by absorbing the heat of the waste hot water from the hot water absorber 40 and the working fluid selectively passed through the switch valves 32, 33, 34 and the hot water of the hot water tank 50. A third heat absorber 41 for absorbing the heat of the outside air to the working fluid selectively passed through the second heat absorber 41 and the switching valves (32, 33, 34) to evaporate the working fluid ( 42), these heat absorbers 40, 41, 42 are used alone or in combination respectively.

In the first and second heat exchangers 20 and 20 ', the heat of the working fluid is supplied to the water supplied from the hot water tank 50 to generate hot water. The working fluid expanded in the expansion valve 30 is selectively transferred to the first, second, and third heat absorbers 40, 41, and 42 by the switching valves 32, 33, and 34. The first heat absorber 40 receives heat for evaporation of the working fluid from the ground water, and the second heat absorber 41 receives heat from the waste hot water using the water of the hot water tank 50 and the working fluid. Is evaporated. In the third heat absorber 42, the working fluid is evaporated by receiving heat from external air. Therefore, since the device is selectively supplied with heat from various surrounding heat sources, the power consumption is relatively low, and the device is smoothly operated.

Other Embodiments of Heat Pump Boiler 100

5 is a configuration diagram showing another example of the heat pump boiler 100 shown in Figures 1 to 3, the heat pump type hot water generator (registration number: 10-0436029, registration date: 2004.06.03) used in the present invention ).

The heat pump type hot water generator of FIG. 5 includes a heat exchange cycle including a compressor 210, a first heat exchanger 220, an expansion valve 230, and a second heat exchanger 240, and the first heat exchanger. Hot water tank 250 for storing the hot water generated by the heat exchanged with the working fluid and the cold water supplied to the 220, and the working fluid delivered from the compressor 210 is installed between the compressor 210 and the expansion valve 230 The external heat exchanger 225 receiving the heat and the external heat supply for receiving the heat of the working fluid from the auxiliary heat exchanger 225 to supply water for the evaporation of the working fluid in the second heat exchanger 240 A water tank 260 and a conduit 280 connecting the compressor 210, the first heat exchanger 220, the expansion valve 230, and the second heat exchanger 240 are provided to set the pressure of the working fluid. It includes pressure control valves (270, 270 ') to be flowed along the conduit (280) only when the pressure.

The auxiliary heat exchanger 225 is connected in parallel with the first heat exchanger 220, the control valve for controlling the amount of the working fluid delivered from the compressor 210 at the inlet side of the auxiliary heat exchanger (225) ( 222 is provided.

The pressure regulating valves 270 and 270 'are disposed between the high pressure side pressure regulating valve 270 installed between the first heat exchanger 220 and the expansion valve 230 and between the compressor 210 and the second heat exchanger 240. It consists of the low pressure side pressure regulating valve 270 'installed. Further, a liquid heater 228 is further provided for heat exchange between the working fluid passing through the high pressure side pressure control valve 270 and the low pressure side pressure control valve 270 '.

According to the above configuration, the hot water generator is operated stably and durability is high and can always receive hot water of a constant temperature.

Another embodiment of the heat pump boiler 100

6 is a configuration diagram showing another example of the heat pump boiler 100 shown in Figures 1 to 3, the heat pump type hot water generator (registration number: 10-0381714, registration date: 2003.04. 11) is shown.

The heat pump type cold / hot water generator of FIG. 6 includes a compressor 300 that compresses a working fluid to a relatively high temperature and high pressure, and a hot water generating heat exchanger 304 that generates hot water by the heat of the working fluid from the compressor 300. And a first expansion valve 314 that selectively receives and expands the working fluid heat-exchanged by the hot water generating heat exchanger 304 to a relatively low temperature and low pressure state, and the waste hot water supplied from the outside passes through the waste hot water. Waste water heat exchanger 316 for evaporating the working fluid from the first expansion valve 314 and receiving the heat from the first expansion valve 314 and the working fluid heat-exchanged in the hot water generating heat exchanger 304 is expanded. The second expansion valve 315 and the working fluid from the second expansion valve 315 to evaporate to make the water supplied from the cold water tank into cold water. A cold water side heat exchanger 320 in which a heat exchange is performed, a cold storage tank 322 in which water exchanged with a working fluid in the cold water side heat exchanger 320 is stored, and water and cold water stored in the cold storage tank 322. And a cold water generating heat exchanger (326) in which heat exchange is performed between the water of the bath to produce cold water.

Here, the selective delivery of the working fluid to the first and second expansion valves (314, 315) is the first and second installed between the hot water generating heat exchanger (304) and the first and second expansion valves (314, 315), respectively. It is performed by the switching valve (310,312).

A circulation pump 324 is further provided between the cold storage tank 322 and the cold water side heat exchanger 320 to circulate water between the cold storage tank 322 and the cold water side heat exchanger 320. In addition, the wastewater heat exchanger 316 is provided with an air pump 318 for sucking air around the apparatus and supplying it to the waste hot water inside the wastewater heat exchanger 316.

The working fluid compressed by the compressor 300 condenses in the hot water generating heat exchanger 304 to generate hot water, and the working fluid from the hot water generating heat exchanger 304 is transferred to the first and second switching valves 310 and 312. And is selectively transferred to the wastewater heat exchanger 316 or the cold water side heat exchanger 320 via the expansion valves 314 and 315. In the wastewater heat exchanger 316, the working fluid is evaporated by heat exchange with the waste hot water and returned to the compressor 300. The cold water side heat exchanger 320 exchanges heat with the water in the cold storage tank 322 to store water at a relatively low temperature in the cold storage tank 322. The cold water generating heat exchanger 326 is connected to the cold storage tank 322, and the cold water generating heat exchanger 326 exchanges the water transferred from the cold water tank 327 with the water of the cold storage tank 322 to exchange the cold water. Cold water is supplied to the tank 327. Therefore, it is possible to produce cold water and hot water simultaneously or only cold water with one device.

Another embodiment of the heat pump boiler 100

7 is a configuration diagram showing another example of the heat pump boiler 100 shown in Figures 1 to 3, the heat pump type hot water generator (registration number: 10-0353626, registration date: 2002.09. Used in the present invention). 09).

The heat pump type hot water generator of FIG. 7 includes a compressor 410 for compressing a working fluid to a relatively high temperature and high pressure, and a first heat exchanger 420 for generating hot water by heat of the working fluid from the compressor 410. ), An expansion valve 430 which expands the working fluid heat-exchanged in the first heat exchanger 420 to a relatively low temperature and low pressure state, and waste hot water supplied from the outside, and heats the waste hot water. The second heat exchanger 440 and the second heat exchanger 440 for evaporating the working fluid from the expansion valve 430 to be delivered to the compressor 410 are selectively opened according to the state of the working fluid flowing into the compressor 410. And a pressure regulating valve 470 which delivers a high temperature gaseous working fluid that has passed through the compressor 410 to the outlet of the expansion valve 430.

Here, the second heat exchanger 440 has a relatively large capacity, a relatively long waste hot water flow path is formed in the heat exchange chamber 442 inside the housing constituting the exterior by a partition plate, the waste hot water flow path The inside of the heat exchange tube is installed so that the working fluid moves along the heat exchange tube from the downstream to the upstream heat exchange.

The second heat exchanger 440 is further provided with a circulation pump 450 for transferring the waste hot water from the downstream portion of the waste hot water flow path to the upstream portion.

The water level sensing unit 445 communicates with a downstream portion of the waste water flow path in the second heat exchanger 440 and extends up and down the heat exchange chamber 442 and includes a discharge pump 446. ) Is further provided.

Between the first heat exchanger 420 and the expansion valve 430 is further provided with a receiver 422 collecting working fluid, the receiver 422 has a constant working fluid pressure inside the receiver 422 In this case, an automatic safety valve 425 for supplying a working fluid to the outlet side of the expansion valve 430 is provided.

The pressure regulating valve 470 transfers a part of the high temperature gaseous working fluid from the compressor 410 to the expansion valve 430 when the pressure of the working fluid entering the compressor 410 is low. . By doing so, even if the supply of waste hot water to the second heat exchanger 440 is not smooth, the entire apparatus can be operated smoothly. In addition, the second heat exchanger 440 is formed with a relatively large capacity, and partitions the heat exchange chamber 442 inside the housing 441 with a partition plate 442g to relatively lengthen the flow passage of the waste hot water. A circulation pump 450 is installed to connect the downstream portion and the upstream portion of the flow passage of the waste hot water to circulate the waste hot water from the downstream portion to the upstream portion. In addition, the receiver 422 installed between the first heat exchanger 420 and the expansion valve 430 has an automatic safety valve that delivers the working fluid to the outlet of the expansion valve 430 when the working fluid pressure therein increases. 425 is installed. According to the present invention as described above, even if the supply of waste hot water is not smooth, the operation of the device is smoothly performed.

The heat pump boiler 100 of the present invention does not generate pollutants such as greenhouse gases (CO ₂ ) because energy is recovered by using waste heat as much as possible without using fossil or petroleum fuel and the energy cost is remarkable. Can be reduced. Therefore, the fuel cost can be reduced by 1/3 or more (40 to 70%) and the maintenance cost can be reduced compared to the conventional boiler system.

In addition, there is no defrosting in winter (outside temperature -15 ℃), so no defrosting operation is required, and the efficiency decreases even when conditions such as outside temperature change by controlling the amount of refrigerant constantly, and summer operation by applying overheat operation compensation device. There is no problem at all. In particular, in Korea, the minimum temperature in winter is rarely lowered below -15 ° C., thus, almost 100% operation is possible when applying the technology of the present invention.

Here, the dropping refers to the freezing phenomenon that occurs in the outdoor unit (evaporator) coil when the outside air temperature decreases, and the defrosting means forcibly removing the accumulated outdoor unit by using a high temperature refrigerant gas.

In addition, the hot water outlet temperature (for example, 60 ℃) can always be controlled constantly, and inlet temperature compensation device by applying the inlet temperature (for example, 7 ℃) can always be controlled constantly.

Furthermore, since the heat pump boiler 100 of the present invention uses electric energy, the price and supply of energy is stable, and because it does not generate pollutants such as greenhouse gas (CO ₂ ), it may be eligible for tax support. There is an advantage.

Table 3 below is a chart comparing the boiler efficiency of the product (sunking boiler) to which the technology of the present invention is applied (based on 10HP), and compares the energy cost of producing the same calories.

                                 (Heating capacity of boiler; 2,000,000 Kcal / day) division Invention
(Sunking B) Midnight electricity B / C City gas Kerosene Remarks Calorific value 860
(Kcal / Kw) 860
(Kcal / Kw) 9,900
(Kcal / ℓ) 10,500
(Kcal / Nm ³ ) 8,700
(Kcal / ℓ) Calorific value 5,160
(Kcal / Kw) 817
(Kcal / Kw) 7,920
(Kcal / ℓ) 8,925
(Kcal / Nm ³ ) 7,395
(Kcal / ℓ) Temperature (℃) 75 75 75 75 75 Hot water quantity (ℓ) 50,000 50,000 50,000 50,000 50,000 15 hours
Operation standard Calories consumed (Kcal) 2,000,000 2,000,000 2,000,000 2,000,000 2,000,000 Fuel consumption 388 (Kw) 2,448 (Kw) 253 (ℓ) 224 (Nm ³ ) 270 (ℓ) Daily consumption
(won) 1Kw / 75won 1Kw / 45won 1ℓ / 500won 1Nm ³ / 650won 1ℓ / 850won 29,100 110,160 126,500 158,600 229,500 Job Reduction Cost (KRW) 81,060 97,400 120,500 200,400 Monthly Savings (KRW) 2,431,800 2,922,000 3,885,000 6,012,000 30 days Annual cost savings (KRW) 29,181,000 35,064,000 46,820,000 72,144,000 12 months
standard Economics(%) 378 434 545 788

Table 3 is a result of the test by the Korea Refrigeration and Air Conditioning Testing Institute as a reference to the ambient temperature from -5 ℃ to +5 ℃, as a result of evaluating the economic efficiency compared to the general midnight electric boiler compared to the operating cost of the heat pump boiler of the present invention Is 378%, bunker oil (B / C) is 434%, city gas boiler 545%, diesel oil boiler 788% will require more operating costs.

As such, the low-carbon green agricultural facility operating system and method using the air heat heat pump of the present invention by providing a low-carbon green agricultural facility (LCGAP) farming method that does not generate greenhouse gases (CO ₂ ) and significantly reduce energy costs, The technical problem of this invention can be solved.

It will be apparent to those skilled in the art that various modifications and changes can be made in the present invention without departing from the spirit or scope of the present invention as defined by the appended claims. It will be appreciated that such modifications and variations are intended to fall within the scope of the following claims.

Fuel-saving low-carbon green agricultural facility operating system and method using the air heat heat pump of the present invention has been described taking the heating system of the vinyl house as an example, but is not limited to this is applicable to all fuel-saving cooling and heating system using the air heat heat pump. Can be.

1 is an overall configuration diagram of a fuel-saving low carbon green agricultural facility operating system using an air heat heat pump according to a preferred embodiment of the present invention.

2 is an overall configuration diagram of a fuel-saving low carbon green agricultural facility operating system using an air heat heat pump according to another preferred embodiment of the present invention.

3 is an overall configuration diagram of a fuel-saving low carbon green agricultural facility operating system using an air heat heat pump according to another preferred embodiment of the present invention.

4 is a configuration diagram of the heat pump boiler 100 illustrated in FIGS. 1 to 3.

5 is a configuration diagram of another example of the heat pump boiler 100 shown in FIGS.

6 is a configuration diagram of another example of the heat pump boiler 100 shown in FIGS.

7 is a configuration diagram showing another example of the heat pump boiler 100 shown in FIGS.

[Description of Code for Major Parts of Drawing]

10 compressor 11: connecting pipe

12: oil separator 20,20 ': first and second heat exchanger

22: receiver 30: expansion valve

32, 33, 34: switching valve 40, 41, 42: first, second, third heat absorber

50: hot water tank 52: conduit

54,54 ': Pump 55,55': Valve

56,56 ': Check valve

100: heat pump boiler 110: first hot water tank

120: hot water distributor 130: vinyl house

131: radiator 140: cold water recovery

150: circulation pump 160: second hot water tank

170: third hot water tank 180: n-th hot water tank

210: compressor 212: oil separator

220: first heat exchanger 222: control valve

225: auxiliary heat exchanger 228: liquid heat exchanger

229: receiver 230: expansion valve

240: second heat exchanger 250: hot water tank

252: water supply source 254: pump

255 valve 256 check valve

260: External water tank 270,270 ': Pressure regulating valve

280: conduit

300: compressor 301: connection pipe

302: oil separator 304: hot water generation heat exchanger

306: receiver 308: working fluid distributor

310: first switching valve 312: second switching valve

314,315 Expansion valve 316 Wastewater heat exchanger

318: air pump 319: water level sensor

320: cold water side heat exchanger 322: cold storage tank

324: circulation motor 326: cold water generation heat exchanger

327: cold water tank 327 ': temperature sensor

410: compressor 411: connection pipe

412: oil separator 420: first heat exchanger

422: receiver 425: automatic safety valve

430 expansion valve 440 second heat exchanger

440i: waste outlet 440e: waste outlet

445: water level detection unit 446: discharge pump

450: circulation pump 455: temperature sensor

460: liquid separator 470: pressure regulating valve

Claims (14)

In the method of operating a low carbon green agriculture facility, (a) supplying hot water from the air heat heat pump to the first hot water tank; (b) supplying hot water stored in the first hot water tank to a plurality of radiators to heat indoor air and supplying some hot water stored in the first hot water tank to a second hot water tank; (c) mixing and storing cold water radiated from the plurality of radiators and hot water partially supplied from the first hot water tank in a second hot water tank; And (d) supplying the cold and hot water stored in the second hot water tank to the air heat heat pump to heat the hot water, and then repeating the steps (a) to (c). The method of operating a fuel-saving low-carbon green agricultural facility, characterized in that the plurality of radiators and the first and second hot water tanks are installed together inside the heating place to be heated simultaneously. The method of claim 1 wherein the low carbon green agricultural facility is operated: A method of operating a fuel-saving low carbon green agricultural facility, characterized in that one or more hot water tanks are further installed between the second hot water tank and the air heat heat pump to sequentially store and deliver water. The method of claim 1, wherein the air heat heat pump is: A method of operating a fuel-saving low-carbon green agricultural facility, which is capable of simultaneously supplying cooling, heating, cold and hot water, and a cooling and heating device that transmits a low temperature heat source to a high temperature and delivers a high temperature heat source to a low temperature. In the low carbon green agricultural facility operation system, A heat pump boiler capable of simultaneously supplying cooling, heating, cold and hot water, and transferring a low temperature heat source to a high temperature by using air heat and a high temperature heat source to a low temperature; A first hot water tank receiving and storing hot water from the heat pump boiler and supplying the stored hot water to a hot water distributor and a second hot water tank; A hot water distributor configured to distribute and supply hot water supplied from the first hot water tank to a plurality of radiators installed at a heating place; A cold water recoverer for recovering cold water radiated from the plurality of radiators; And And at least one hot water tank for mixing and storing cold water recovered from the cold water recoverer and hot water supplied from the first hot water tank, and supplying the stored cold hot water to the heat pump boiler. A fuel-saving low-carbon green agricultural facility operating system, characterized in that the plurality of radiators and the at least one hot water tank are installed together inside the heating place to be heated at the same time. The system of claim 4 wherein the low carbon green agricultural facility operating system is: And a circulation pump for supplying cold water recovered through the cold water recoverer to the at least one hot water tank. The system of claim 4 wherein the low carbon green agricultural facility operating system is: A fuel-saving low-carbon green agricultural facility operating system, characterized in that it further comprises one or more hot water tanks between the second hot water tank and the heat pump boiler to sequentially store and deliver water. 5. The heater pump boiler of claim 4 wherein: Compressor 10 for compressing the working fluid to relatively high temperature and high pressure; A plurality of heat exchangers (20, 20 ') for dissipating heat of the working fluid from the compressor (10); An expansion valve (30) for expanding the working fluid heat-exchanged in the heat exchanger (20, 20 ') to make a relatively low temperature low pressure state; Switching valves (32, 33, 34) for delivering the working fluid out of the expansion valve (30) in an optional path; A plurality of heat absorbers (40, 41, 42) for absorbing heat supplied from the surroundings to the working fluid selectively transferred through the switching valves (32, 33, 34) to evaporate the working fluid; And Cooling water supplied to the heat exchanger (20, 20 ') a hot water tank (50) for storing hot water generated by heat exchange with the working fluid; fuel-saving low-carbon green agricultural facility operating system comprising a. 8. The heat absorber (40, 41, 42) of claim 7, wherein: A first heat absorber 40 for absorbing heat supplied from groundwater to the working fluid selectively transferred through the switching valves 32, 33, and 34 so that the working fluid is evaporated; Second heat absorber for absorbing the heat of the waste hot water from the hot water tank 50 to the working fluid selectively transferred through the switching valve (32, 33, 34) to evaporate the working fluid ( 41); It consists of a third heat absorber 42 to absorb the heat of the outside air to the working fluid selectively passed through the switching valves (32, 33, 34) to evaporate the working fluid, The first to third heat absorbers (40, 41, 42) is a fuel-saving low-carbon green agricultural operating system, characterized in that used alone or in combination. 5. The heater pump boiler of claim 4 wherein: A heat exchange cycle including a compressor (210), a first heat exchanger (220), an expansion valve (230), and a second heat exchanger (240); A hot water tank 250 for storing hot water generated by heat-exchanging the working fluid with the cold water supplied to the first heat exchanger 220; An auxiliary heat exchanger (225) installed between the compressor (210) and the expansion valve (230) to receive a working fluid delivered from the compressor (210); An external water tank 260 which receives heat of the working fluid from the auxiliary heat exchanger 225 and supplies water for providing heat for evaporation of the working fluid in the second heat exchanger 240; And The conduit 280 is provided in the conduit 280 connecting the compressor 210, the first heat exchanger 220, the expansion valve 230, and the second heat exchanger 240 so that the pressure of the working fluid becomes a set pressure. It includes a pressure control valve (270, 270 ') to flow along the, The auxiliary heat exchanger 225 is connected in parallel with the first heat exchanger 220, Fuel-saving low-carbon green agricultural operating system, characterized in that the inlet side of the auxiliary heat exchanger (225) has a control valve (222) for controlling the amount of working fluid delivered from the compressor (210). The method of claim 9, The pressure regulating valves 270 and 270 'are disposed between the high pressure side pressure regulating valve 270 installed between the first heat exchanger 220 and the expansion valve 230 and between the compressor 210 and the second heat exchanger 240. It consists of a low pressure side pressure control valve (270 ') to be installed, Fuel-saving low-carbon green agricultural facility, characterized in that it further comprises a liquid heater 228 for heat exchange between the working fluid passing through the high pressure side pressure control valve 270 and the low pressure side pressure control valve 270 '. Operating system. 5. The heater pump boiler of claim 4 wherein: Compressor 300 for compressing the working fluid to make a relatively high temperature and high pressure; A hot water generating heat exchanger (304) for generating hot water by the heat of the working fluid from the compressor (300); A first expansion valve 314 that selectively receives and expands the working fluid heat-exchanged in the hot water generating heat exchanger 304 to a relatively low temperature and low pressure; A wastewater heat exchanger (316) for passing the waste hot water supplied from the outside and receiving heat of the waste hot water to evaporate the working fluid from the first expansion valve (314) to the compressor; A second expansion valve 315 selectively receiving the working fluid heat-exchanged in the hot water generating heat exchanger 304 to expand and to make it into a relatively low temperature low pressure state; A cold water side heat exchanger 320 in which heat exchange is performed to evaporate the working fluid from the second expansion valve 315 to make the water supplied from the cold water tank into cold water; A cold storage tank (322) for storing water that exchanges heat with the working fluid in the cold water side heat exchanger (320); And And a cold water generation heat exchanger (326) in which cold water is generated by heat exchange between the water stored in the cold storage tank and the water of the cold water tank. The method of claim 11, wherein the heater pump boiler is: First and second switching valves installed between the hot water generating heat exchanger 304 and the first and second expansion valves 314 and 315, respectively, for selectively transferring a working fluid to the first and second expansion valves 314 and 315. (310,312); And And a circulation pump 324 for circulating water between the cold storage tank 322 and the cold water side heat exchanger 320. The waste water heat exchanger (316) is a fuel-saving low-carbon green agricultural facility operating system, characterized in that it comprises an air pump (318) for sucking the air around the device to supply the waste hot water inside the waste water heat exchanger (316). 5. The heater pump boiler of claim 4 wherein: A compressor 410 for compressing the working fluid to make the high temperature and high pressure relatively; A first heat exchanger 420 for generating hot water by the heat of the working fluid from the compressor 410; An expansion valve 430 which expands the working fluid heat-exchanged in the first heat exchanger 420 to a relatively low temperature low pressure state; A second heat exchanger 440 which receives the heat of the waste hot water and evaporates the working fluid from the expansion valve 430 to the compressor 410 and passes the waste hot water supplied from the outside; And A pressure regulating valve 470 which is selectively opened according to the state of the working fluid flowing into the compressor 410 to transfer the high temperature gas working fluid passing through the compressor 410 to the outlet of the expansion valve 430. ;; The second heat exchanger 440 has a relatively large capacity, and a relatively long waste hot water flow path is formed in the heat exchange chamber 442 inside the housing constituting the exterior by a partition plate, and the interior of the waste hot water flow path. The heat exchange pipe is installed, the fuel-saving low-carbon green agricultural facility operating system, characterized in that the heat exchange while the working fluid moves from the downstream to the upstream along the heat exchange pipe. The boiler of claim 13 wherein the heater pump boiler is: The second heat exchanger 440 is further provided with a circulation pump 450 for transferring the waste hot water from the downstream of the waste hot water flow path upstream. The water level sensing unit 445 communicates with a downstream portion of the waste water flow path in the second heat exchanger 440 and extends up and down the heat exchange chamber 442 and includes a discharge pump 446. ), Between the first heat exchanger 420 and the expansion valve 430 is further provided with a receiver 422 collecting working fluid, The receiver 422 further comprises an automatic safety valve 425 for supplying a working fluid to the outlet side of the expansion valve 430 when the working fluid pressure inside the receiver 422 becomes a predetermined value or more. Fuel-saving low carbon green agricultural facility operating system.

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