KR102144052B1 - Energy Recovery Ventilator with Active Humidity Control and Method Thereof - Google Patents

Abstract

The present invention relates to a ventilation apparatus and method for a greenhouse, and a waste heat recovery type active humidity capable of actively controlling the humidity of air discharged from a total heat exchanger according to the purpose of ventilation for humidity control of a greenhouse using a dehumidifying pipe. Provides a control ventilation device and method.

Description

Energy Recovery Ventilator with Active Humidity Control and Method Thereof}

The present invention relates to a ventilation apparatus and method for a greenhouse, and more particularly, to a ventilation apparatus and method capable of actively controlling humidity with waste heat recovery.

Conventional waste heat recovery ventilation system using a total heat exchanger applied to the greenhouse is one of the main objectives of ventilation inside the greenhouse due to the transfer of heat and moisture between the air discharged from the greenhouse and the air supplied to the greenhouse. When applied to the purpose of controlling the humidity inside the greenhouse to prevent condensation, some of the moisture to be removed from the greenhouse is recovered from the air discharged from the greenhouse and re-inflowed through the air supplied to the greenhouse, thereby interfering with effective dehumidification through greenhouse ventilation. There is a problem.

Accordingly, there is a need to prepare a method for additional humidity control of air supplied to the greenhouse that has been completely heat-exchanged in order to effectively achieve energy reduction and dehumidification through heat energy recovery.

Korean Patent Publication No. 10-0624708 (2006.09.18) Japanese Patent Publication No. 4036590 (2008.01.23)

The present invention has been devised to solve the above problems, and is a waste heat recovery type active that enables active control of the humidity of air discharged from the total heat exchanger according to the purpose of ventilation for humidity control of a greenhouse using a dehumidifying pipe. It is an object to provide a humidity control ventilation apparatus and method.

The waste heat recovery type active humidity control ventilation apparatus according to the present invention for solving the above problems includes: a total heat exchanger that transfers heat and moisture of air discharged from the greenhouse to air supplied to the greenhouse for ventilation of the greenhouse; And a dehumidifying pipe having an adsorbent therein for removing moisture from the air discharged from the total heat exchanger; wherein the adsorbent of the dehumidifying pipe is characterized in that desorption of moisture adsorbed by a low temperature heat source and a high temperature heat source is performed. do.

The dehumidification pipe includes a hot water pipe for supplying the low temperature heat source and a heat transfer pipe for supplying the high temperature heat source therein.

In addition, it is connected to the dehumidification pipe further includes a vacuum pipe for lowering the internal pressure of the dehumidification pipe.

The vacuum pipe is located above the dehumidification pipe and communicates with the dehumidification pipe through a connection pipe.

One end of the connection pipe is connected to an upper portion of the dehumidification pipe, and the other end of the connection pipe is connected to an upper portion of the vacuum pipe.

Preferably, the vacuum pipe is provided with a drain for discharging condensed water at a lower side.

Preferably, the hot water pipe is formed in a double pipe structure including an inner pipe to which compressed air is supplied and an outer pipe to which hot water is supplied by being disposed to surround the inner pipe.

The hot water pipe includes a spray nozzle for guiding and spraying the compressed air of the inner pipe to the outside of the outer pipe.

In addition, a pipe support for supporting the inner tube to the outer tube is provided between the inner tube and the outer tube.

Preferably, a reflective surface for reflecting the heat of the heat transfer pipe to an adsorbent stored in the lower portion of the dehumidifying pipe is provided on the inner upper part of the dehumidifying pipe.

The reflective surface may be formed by coating a reflective material on the inner surface of the dehumidifying pipe.

In addition, the reflective surface may be formed of a reflective plate having a predetermined curvature installed on the inside of the dehumidifying pipe.

The waste heat recovery type active humidity control ventilation device according to the present invention receives air containing moisture desorbed from the adsorbent from the dehumidifying pipe when the heat transfer pipe is operated, and the latent heat of condensation generated when the moisture is condensed and the second heat of the condensed water. It further comprises a heat storage tank to store.

In addition, it further includes a bypass pipe for directly supplying the air discharged from the total heat exchanger to the greenhouse by bypassing the dehumidification pipe.

The bypass pipe has one end connected to a pipe communicating with the total heat exchanger and the dehumidifying pipe, and the other end connected to an air supply pipe communicating with the dehumidifying pipe and the greenhouse.

The air discharged from the total heat exchanger is guided to the air supply pipe through the dehumidification pipe or the air supply pipe through the dehumidifying pipe at the connection part of the bypass pipe and the connection part of the pipe and the other end of the bypass pipe and the air supply pipe. Each is provided with a three-way valve controlled to guide to.

A plurality of air supply pipes arranged to correspond to each crop bed is provided under the plurality of crop beds located inside the greenhouse.

The dehumidification pipe is formed of a single pipe disposed on one side of the greenhouse, and a plurality of the total heat exchanger and air supply pipe are provided to be disposed along the length direction of the dehumidification pipe.

The air supply pipe and the air supply pipe are provided in the same number and are arranged to communicate with each other.

On the other hand, the waste heat recovery type active humidity control ventilation method according to the present invention includes a vacuum storage step of storing a vacuum in the vacuum pipe; A humidity measuring step of measuring the humidity of air discharged from the total heat exchanger; A dehumidifying step of passing the air discharged from the total heat exchanger through the dehumidifying pipe when dehumidification of the air discharged from the total heat exchanger is required, and adsorbing moisture from the air by an adsorbent inside the dehumidifying pipe; A desorption determination step of determining a time point at which the adsorbent inside the dehumidification pipe needs to be desorbed; A vacuum degree determining step of determining whether the degree of vacuum inside the vacuum pipe is such that desorption by the low temperature heat source is possible at a time when the adsorbent inside the dehumidifying pipe needs to be desorbed; Desorption of a low-temperature heat source for desorption of the adsorbent by supplying hot water through a hot water pipe provided inside the dehumidifying pipe by opening an opening/closing valve of a connecting pipe that communicates the vacuum pipe and the dehumidifying pipe step; A low-temperature heat source desorption stopping step of closing an opening/closing valve of a connection pipe communicating with the vacuum pipe and a dehumidifying pipe when the vacuum degree of the vacuum pipe rises above a predetermined pressure, and stopping hot water supply through the hot water pipe; And a high-temperature heat source desorption step of performing desorption by the high-temperature heat source by operating a heat transfer pipe provided inside the dehumidifying pipe when additional desorption is required.

In addition, when dehumidification of the air discharged from the total heat exchanger is not required, a non-dehumidifying step of bypassing the air discharged from the total heat exchanger so as not to pass through the dehumidifying pipe is further included.

Preferably, the desorption step of the low-temperature heat source includes a drain step of condensing water vapor introduced into the vacuum pipe during the desorption process to discharge water accumulated in the lower portion of the vacuum pipe to the outside.

The high-temperature heat source desorption step includes a heat storage step of transferring air containing desorbed moisture to a heat storage tank to store the latent heat of condensation of moisture and the used heat of the condensed water in the heat storage tank.

Preferably, in the vacuum storage step, vacuum intermittently generated by a renewable energy source is stored inside the vacuum pipe.

Preferably, the high-temperature heat source desorption step is carried out together with the low-temperature heat source desorption step in an emergency situation requiring desorption within a short time.

The waste heat recovery type active humidity control ventilation apparatus and method according to the present invention enables more accurate and rapid environmental control of temperature and humidity in a greenhouse by connecting a large-capacity dehumidifying pipe to the total heat exchanger.

In addition, energy input to the desorption process can be minimized by selectively applying a low temperature heat source and a high temperature heat source in the desorption process of the adsorbent.

In addition, by providing a heat storage tank for storing latent heat of condensation and used heat of water vapor generated during the desorption process of the adsorbent, it is possible to efficiently recover and reuse the energy input during the desorption process of the adsorbent.

1 is a view conceptually showing a main part of a waste heat recovery type active humidity control ventilation device according to the present invention.
FIG. 2 is a diagram (a) front view, (b) side view) conceptually showing a main part of a dehumidification pipe in FIG. 1.
3 is a view showing the concept of the use of heat energy recovery during desorption by a high-temperature heat source in the present invention.
4 is a view showing the arrangement of pipes for supplying dry air to a greenhouse in the present invention.
5 is a flow chart sequentially showing each step of the active humidity control ventilation method for waste heat recovery according to the present invention.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings. However, detailed descriptions of known functions and configurations that may unnecessarily obscure the subject matter of the present invention will be omitted.

1 is a view conceptually showing the main part of the active humidity control ventilation device for waste heat recovery according to the present invention, and FIG. 2 is a view conceptually showing the main part of the dehumidification pipe in FIG. 1 ((a) front view, (b) ) Side view).

Referring to Figure 1, the waste heat recovery type active humidity control ventilation device according to the present invention is air (2) discharged from the greenhouse (10) to the air (1) supplied to the greenhouse (10) for ventilation of the greenhouse (10). It includes a dehumidification pipe 30 having a total heat exchanger (20) for transferring heat and moisture from the total heat exchanger (20) and an adsorbent (31) for removing moisture from the air discharged from the total heat exchanger (20).

In the present invention, the adsorbent 31 is made of a known adsorbent material such as zeolite, silica gel, and salt.

The waste heat recovery type active humidity control ventilation device according to the present invention is characterized in that the adsorbent 31 of the dehumidifying pipe 30 desorbs (regenerates) moisture adsorbed by a low temperature heat source and a high temperature heat source. The dehumidification pipe 30 includes a hot water pipe 32 for supplying a low-temperature heat source and an electric heating pipe 33 for supplying a high-temperature heat source (see FIG. 2).

For desorption by a low-temperature heat source, a vacuum pipe 40 for lowering the internal pressure of the dehumidifying pipe 30 is connected to the dehumidifying pipe 30 at an upper portion of the dehumidifying pipe 30. ) To be supported.

That is, since the boiling temperature of water decreases as the pressure decreases, the present invention allows dehumidification by lowering the internal pressure of the dehumidifying pipe 30 by using a vacuum so that desorption is possible even by a low-temperature heat source.

The connection pipe 41 has one end connected to the upper part of the dehumidification pipe 30 and the other end connected to the upper part of the vacuum pipe 40, and each connection pipe 41 is connected to the dehumidification pipe 30. An on-off valve 42 is installed to selectively apply a vacuum in the vacuum pipe 40.

The vacuum pipe 40 is continuously created in a vacuum state by the vacuum pump 43, and power to operate the vacuum pump 43 is produced from intermittently generated renewable energy sources (solar power, wind power, etc.) It can be supplied from unused power or surplus power from cogeneration.

In the case of using a renewable energy source, when the vacuum level in the vacuum pipe 40 reaches a certain level, the power generated from the renewable energy source installed for power supply may be sold to the power grid or controlled to be used for driving other facilities. I can.

That is, in the present invention, the vacuum pipe 40 does not operate only when desorption is required to create a vacuum condition, but uses electrical energy such as a renewable energy source intermittently generated during a period in which desorption is not required. The concept of vacuum storage to secure a sufficient vacuum state is applied.

Accordingly, the larger the capacity of the vacuum pipe 40 is possible, the better, but it is preferable to select an appropriate volume (capacity) according to the dehumidification capacity of the greenhouse 10 in consideration of equipment cost.

On the other hand, in the desorption process by the low temperature heat source, the vapor including moisture desorbed from the dehumidifying pipe 30 is at the top of the dehumidifying pipe 30 due to a pressure difference between the vacuum pipe 40 and the dehumidifying pipe 30. It is continuously introduced into the vacuum pipe 40 located at, and the introduced steam generates water by a condensation action, and the generated water is collected under the vacuum pipe 40.

In the present invention, a drain 44 is provided at a lower side of the vacuum pipe 40 for discharging such condensed water, and a drain pipe 45 equipped with a drain valve 46 is connected to the drain 44, By selectively opening and closing the drain pipe 45 according to the operation of the drain valve 46, the condensed water accumulated in the lower portion of the vacuum pipe 40 is continuously discharged.

The present invention continuously secures a space in which steam generated during the desorption process can be introduced into the vacuum pipe 40 through the discharge of the condensed water, so that the pressure inside the vacuum pipe 40 is rapidly increased. This prevents the desorption process by a low-temperature heat source to be maintained for a certain period.

A pressure sensor 47 for measuring an internal pressure is installed in the vacuum pipe 40 (see FIG. 2).

On the other hand, in the present invention, for smooth adsorption and desorption of the adsorbent 31, by spraying compressed air to the adsorbent 31 by using the hot water pipe 32 located surrounded by the adsorbent 31, the adsorbent (31) should be intermittently or periodically mixed.

To this end, the hot water pipe 32 is formed in a double pipe structure consisting of an inner pipe 34 to which compressed air is supplied, and an outer pipe 35 to which hot water is supplied by being disposed to surround the inner pipe 34, A spray nozzle 36 for guiding and spraying the compressed air of the inner tube 34 to the outside of the outer tube 35 is provided (see FIG. 2B).

The compressed air may be supplied by an external separate facility, and a pipe support 37 is provided between the inner pipe 34 and the outer pipe 35 so that the inner pipe 34 is connected to the outer pipe 35 ) To be firmly supported.

In addition, a source of thermal energy required for the hot water pipe 32 may be supplied to various heat sources such as a renewable energy source, a boiler, and waste heat.

On the other hand, on the inner upper part of the dehumidification pipe 30, a reflective surface that reflects the heat of the heat transfer pipe 33 to the adsorbent 31 stored under the dehumidification pipe 30 in order to maximize the desorption effect by promoting radiant heat transfer. (Not shown) is preferably provided, and the reflective surface is formed by coating a reflective material on the inner surface of the dehumidifying pipe 30 or formed of a reflective plate having a predetermined curvature installed on the inner upper side of the dehumidification pipe 30. I can.

In the present invention, the desorption by a high-temperature heat source using the heat transfer pipe 33 is low temperature in case the desorption by the low-temperature heat source cannot proceed because the pressure in the vacuum pipe 40 rises above a certain level or in an emergency situation that requires desorption within a short time. It can proceed with desorption by a heat source.

That is, the present invention provides a plurality of heating sources for regeneration of the adsorbent 31 of the dehumidification pipe 30, and selectively or simultaneously heats according to the pressure condition of the dehumidification pipe 30, thereby providing efficient regeneration capability. Will be equipped.

On the other hand, the present invention receives air containing moisture desorbed from the adsorbent 31 when the heat transfer pipe 33 is operated from the dehumidifying pipe 30, and the latent heat of condensation generated when the moisture is condensed and the second heat of condensed water It includes a heat storage tank 50 to store.

3 is a view showing the concept of the use of heat energy recovery during desorption by a high-temperature heat source in the present invention.

Referring to FIG. 3, when the heat transfer pipe 33 is operated to apply thermal energy to the adsorbent 31 in the adsorption state, water molecules adsorbed are desorbed and evaporated to fill the upper space of the dehumidification pipe 30, At this time, water vapor is transferred to the upper portion of the heat storage tank 50 through a transfer pipe 51 and a blower 52 connecting the upper one side of the dehumidification pipe 30 and the upper one side of the heat storage tank 50.

The steam transferred to the top of the heat storage tank 50 is condensed according to the high temperature water 3 inside the heat storage tank 50 and the atmospheric conditions above, and at this time, the latent heat of condensation and the used heat of the condensed water are inside the heat storage tank 50. It is stored and recycled to supply heat to the hot water header 54 for heating the inside of the greenhouse 10 or the hot water pipe 32 of the dehumidification pipe 30 in the future.

Accordingly, the present invention enables efficient recovery and reuse of energy input during the desorption process of the adsorbent 31 by a high-temperature heat source.

In FIG. 3, reference numeral 53 denotes an on-off valve installed on the transfer pipe 51 to regulate the transfer of water vapor to the heat storage tank 50, and reference numerals 55 and 56 denote hot water inside the heat storage tank 50 (3 ) To the hot water header 54 or the hot water pipe 32, respectively, a pump and a three-way valve for controlling the supply.

Referring back to FIG. 1, the present invention includes a bypass pipe 60 for directly supplying the air discharged from the total heat exchanger 20 to the greenhouse 10 by bypassing the dehumidification pipe 30.

The bypass pipe 60 has one end connected to a pipe 61 communicating the total heat exchanger 20 and the dehumidifying pipe 30, and the other end communicating the dehumidifying pipe 30 and the greenhouse 10. The total heat exchanger (20) is connected to the air supply pipe (62), and at one end of the bypass pipe (60) and a connection part between the pipe (61), and the other end of the bypass pipe (60) and the air supply pipe (62). Each of the three-way valves 63 is provided to guide the air discharged from the dehumidifying pipe 30 to the air supply pipe 62 or to the air supply pipe 62 through the bypass pipe 60. .

Accordingly, the present invention measures the humidity of the air immediately after the total heat exchange, and if it is lower than the proper humidity required to prevent condensation inside the greenhouse 10, the greenhouse 10 directly without passing through the dehumidifying pipe 30 filled with the adsorbent 31 ) Control to be supplied through the air supply pipe 62 connected to the inside.

On the other hand, if the humidity of the air immediately after the total heat exchange is higher than the proper humidity required to prevent condensation inside the greenhouse 10, it is transferred to the dehumidifying pipe 30 filled with the adsorbent 31, and the transferred air is sufficiently dried in advance. As moisture is adsorbed through contact with (31), the relative humidity in the air drops. At this time, the temperature of the air is further increased by the heat of adsorption generated during adsorption.

That is, the present invention monitors the humidity state of the air introduced after total heat exchange, and if the humidity of the air (relative humidity) is not sufficiently low to prevent condensation inside the greenhouse 10, the rear end of the total heat exchanger 20 Air having sufficiently dry humidity is introduced into the greenhouse 10 by passing through the dehumidification pipe 30 installed in the greenhouse 10, and also absorbs the adsorption heat generated during the air adsorption process to compare the air temperature immediately after total heat exchange. By introducing more heated air into the greenhouse 10, the damage caused by the temperature drop inside the greenhouse 10 due to ventilation is alleviated, and at the same time, the relative humidity of the air due to an additional increase in temperature is further lowered to the inside of the greenhouse 10. It is possible to double the effect of preventing condensation.

4 is a view showing the arrangement of pipes for supplying dry air to a greenhouse in the present invention.

Referring to FIG. 4, a plurality of air supply pipes 64 arranged to correspond to each crop bed 11 are provided below a plurality of crop beds 11 located inside the greenhouse 10, and the dehumidification pipe 30 ) Is formed as one pipe having an appropriate pipe diameter disposed on one side of the greenhouse 10, and the total heat exchanger 20 and the air supply pipe 62 are provided in plural to direct the length direction to the dehumidification pipe 30. Are placed accordingly.

The air supply pipe 64 and the air supply pipe 62 are arranged to correspond to each other in the same number and communicate with each other, and the plurality of air supply pipes 62 are distributed at appropriate intervals on one side of the dehumidification pipe 30 Connected. In addition, the air supply pipe 64 forms a plurality of discharge holes (not shown) at appropriate positions in the longitudinal direction of the crop bed 11 to directly spray dry air to the crops above the crop bed 11. Accordingly, dehumidified dry air can be uniformly supplied to each crop bed 11 inside the greenhouse 10.

It is preferable that the air supply pipe 62 is buried in the ground and connected to an air supply pipe 64 located at the lower end of the crop bed 11.

The present invention has a piping arrangement structure having a plurality of air supply pipes 62 as described above, so that dry air passing through the total heat exchanger 20 and the dehumidifying pipe 30 reaches the crop bed 11 requiring humidity control. By minimizing the time it takes, it is possible to supply dry air to the crops in a timely manner, thereby improving the responsiveness of the crop environment.

On the other hand, in the present invention, the air (2) discharged from the greenhouse (10) is the pipe 12 connecting the greenhouse 10 and the total heat exchanger 20 and the air blower 13 installed in the pipe 12. It is supplied to the total heat exchanger 20 (see FIG. 1), and the air 1 supplied to the greenhouse 10 is also on an air supply line leading from the total heat exchanger 20 to the supply pipe 64 of the greenhouse 10. It is supplied to the total heat exchanger 20 by a blower (not shown) installed at an appropriate location.

At this time, the supply air volume and the exhaust air volume need not be identical to each other, and may be appropriately controlled by the required air volume analyzed to prevent condensation inside the greenhouse 10 by monitoring through a flow meter (not shown).

5 is a flow chart sequentially showing each step of the active humidity control ventilation method for waste heat recovery according to the present invention.

Referring to Figure 5, the waste heat recovery type active humidity control ventilation method according to the present invention is a vacuum storage step (S100) of storing a vacuum in the interior of the vacuum pipe 40, the air discharged from the total heat exchanger (20) The humidity measurement step (S200) of measuring the humidity, when dehumidification of the air discharged from the total heat exchanger 20 is required, the air discharged from the total heat exchanger 20 is passed through the dehumidifying pipe 30 to pass the dehumidifying pipe ( 30) Dehumidification step (S300) of adsorbing moisture from the air by the internal adsorbent (31), a desorption determination step (S400) of determining when desorption of the adsorbent (31) inside the dehumidification pipe (30) is required (S400), the The vacuum degree determination step (S500) of determining whether the degree of vacuum inside the vacuum pipe 30 is a degree that can be desorbed by a low-temperature heat source at a time when the adsorbent 31 inside the dehumidifying pipe 30 needs to be desorbed (S500), the vacuum pipe 40 ) And the dehumidifying pipe 30 by opening the opening/closing valve 42 of the connection pipe 41 communicating with the dehumidifying pipe 30 to lower the pressure inside the dehumidifying pipe 30 and at the same time, the hot water pipe 32 provided inside the dehumidifying pipe 30 A low-temperature heat source desorption step (S600) in which the adsorbent 31 is desorbed through the supply of hot water through the vacuum pipe 40 and the dehumidifying pipe 30 when the vacuum degree of the vacuum pipe 40 rises above a predetermined pressure. Stopping the desorption of the low-temperature heat source (S700) of closing the opening/closing valve 42 of the connection pipe 41 communicating with the hot water pipe 32 and stopping the supply of hot water through the hot water pipe 32, and the dehumidifying pipe 30 when additional desorption is required. ) It is configured to include a high-temperature heat source desorption step (S800) of operating the heat transfer pipe 33 provided inside to proceed with the desorption by the high-temperature heat source.

The vacuum storage step (S100) is a step of storing a vacuum intermittently generated by a renewable energy source in the vacuum pipe 40, and the vacuum is usually used so that the vacuum can be used when desorption of the low temperature heat source is required. The pipe 40 can be maintained in a vacuum state sufficient for desorption of the low temperature heat source.

The low-temperature heat source desorption step (S600) is to communicate the vacuum pipe 40 and the dehumidification pipe 30 when the vacuum degree of the vacuum pipe 40 can be detached through operation of the low-temperature heat source at a time when desorption is required. It is performed by opening the opening/closing valve 42 of the connection pipe 41 to lower the pressure inside the dehumidifying pipe 30 and supplying hot water through the hot water pipe 32. At this time, the desorbed moisture naturally flows into the vacuum pipe 40 located above due to a pressure difference between the dehumidification pipe 30 and the vacuum pipe 40, and a pressure sensor 47 installed in the vacuum pipe 40 Hot water supply is continued until the pressure monitored from) reaches a certain level.

The low-temperature heat source desorption step (S600) includes a drain step (S610) of condensing water vapor introduced into the vacuum pipe 40 during the desorption process to discharge water accumulated in the lower portion of the vacuum pipe 40 to the outside. , By preventing the pressure inside the vacuum pipe 40 from increasing rapidly, the desorption process by the low temperature heat source can be maintained for a certain period.

In spite of this process, when the pressure inside the vacuum pipe 40 rises above a certain level due to the continuous inflow of steam, the desorption by the low-temperature heat source no longer proceeds, so the desorption is stopped or the high-temperature heat source desorption step Perform (S800) to operate the high-temperature heat source to proceed with additional desorption.

The high-temperature heat source desorption step (S800) includes a heat storage step (S810) of transferring air containing desorbed moisture to the heat storage tank 50 to store the latent heat of condensation of moisture and the used heat of the condensed water in the heat storage tank 50. .

The high-temperature heat source desorption step (S800) may be performed together with the low-temperature heat source desorption step (S600) in an emergency situation requiring desorption within a short time.

On the other hand, the present invention includes a non-dehumidifying step (S900) of bypassing the air discharged from the total heat exchanger 20 so as not to pass through the dehumidifying pipe 30, the air discharged from the total heat exchanger 20 When dehumidification is not required, the dehumidification step (S300) is not performed.

As described above, according to the waste heat recovery type active humidity control ventilation apparatus and method according to the present invention, it is possible to actively control the humidity of air discharged from the total heat exchanger according to the purpose of ventilation for humidity control of a greenhouse.

The embodiments disclosed in the present specification and the accompanying drawings are used only for the purpose of easily describing the technical idea of the present invention, and are not used to limit the scope of the present invention described in the claims. Therefore, those of ordinary skill in the art will understand that various modifications and equivalent other embodiments are possible therefrom.

1: Air supplied to the greenhouse (supply air) 2: Air discharged from the greenhouse (exhaust)
3: hot water 10: greenhouse
11: crop bed 12: piping
13: Blowing device
20: Total Heat Exchanger
30: dehumidification pipe 31: adsorbent
32: hot water pipe 33: Electric Heating Pipe
34: inner tube 35: outer tube
36: spray nozzle 37: piping support
40: vacuum pipe 41: connection pipe
42: on-off valve 43: vacuum pump
44: drain 45: drain piping
46: drain valve 47: pressure sensor
50: heat storage tank 51: transfer pipe
52: blower device 53: on-off valve
54: hot water header 55: pump
56: three-way valve 60: bypass pipe
61: pipe 62: air supply pipe
63: three-way valve 64: supply pipe
S100: vacuum storage step S200: humidity measurement step
S300: dehumidification step S400: detachment determination step
S500: vacuum level determination step S600: low temperature heat source desorption step
S610: drain step S700: low temperature heat source desorption stop step
S800: high temperature heat source desorption step S810: heat storage step
S900: Non-dehumidifying stage

Claims (25)

A total heat exchanger that transfers heat and moisture of the internal air discharged from the greenhouse to the outside of the greenhouse to the outside air supplied to the greenhouse from the outside of the greenhouse for ventilation of the greenhouse; And
Including; and a dehumidifying pipe having an adsorbent therein for removing moisture from the total heat exchanged external air discharged from the total heat exchanger to the greenhouse,
The adsorbent of the dehumidifying pipe is desorption of moisture adsorbed by a low temperature heat source and a high temperature heat source,
The dehumidification pipe includes a hot water pipe for supplying the low temperature heat source and a heat transfer pipe for supplying the high temperature heat source,
And a vacuum pipe connected to the dehumidification pipe to lower the internal pressure of the dehumidification pipe. delete delete The method according to claim 1,
The vacuum pipe is located above the dehumidification pipe, and is connected to the dehumidification pipe by a connection pipe. ◈ Claim 5 was abandoned upon payment of the set registration fee. The method of claim 4,
The connection pipe is a waste heat recovery type active humidity control ventilation apparatus, characterized in that one end is connected to the upper portion of the dehumidification pipe and the other end is connected to the upper portion of the vacuum pipe. The method according to claim 1,
The vacuum pipe is a waste heat recovery type active humidity control ventilator, characterized in that a drain for discharging the condensed water is provided at a lower side. The method according to claim 1,
The hot water pipe is a waste heat recovery type active humidity control ventilator, characterized in that formed in a double pipe structure comprising an inner pipe to which compressed air is supplied and an outer pipe to which hot water is supplied by being disposed to surround the inner pipe. ◈ Claim 8 was abandoned upon payment of the set registration fee. The method of claim 7,
The hot water pipe is a waste heat recovery type active humidity control ventilation device, characterized in that it comprises a spray nozzle for guiding and spraying the compressed air of the inner tube to the outside of the outer tube. ◈ Claim 9 was abandoned upon payment of the set registration fee. The method of claim 7,
A waste heat recovery type active humidity control ventilation apparatus, characterized in that a pipe support for supporting the inner pipe to the outer pipe is provided between the inner pipe and the outer pipe. The method according to claim 1,
A waste heat recovery type active humidity control ventilator, characterized in that a reflective surface for reflecting the heat of the heat transfer pipe to the adsorbent stored in the lower portion of the dehumidification pipe is provided on an inner upper part of the dehumidification pipe. ◈ Claim 11 was abandoned upon payment of the set registration fee. The method according to claim 10,
The reflective surface is a waste heat recovery type active humidity control ventilation device, characterized in that formed by coating a reflective material on the inner surface of the dehumidification pipe. ◈ Claim 12 was abandoned upon payment of the set registration fee. The method according to claim 10,
The reflective surface is a waste heat recovery type active humidity control ventilation device, characterized in that formed of a reflective plate of a predetermined curvature installed on the inside of the dehumidification pipe. The method according to claim 1,
Waste heat, characterized in that it further comprises a heat storage tank for receiving air containing moisture desorbed from the adsorbent during operation of the heat transfer pipe from the dehumidifying pipe, and storing latent heat of condensation generated during condensation of moisture and waste heat of condensed water Recovery type active humidity control ventilation system. The method according to claim 1,
Waste heat recovery type active humidity control ventilation device, characterized in that it further comprises a bypass pipe for directly supplying the air discharged from the total heat exchanger to the greenhouse by bypassing the dehumidification pipe. The method of claim 14,
The bypass pipe has one end connected to a pipe communicating with the total heat exchanger and the dehumidifying pipe, and the other end connected to an air supply pipe communicating with the dehumidifying pipe and the greenhouse. ◈ Claim 16 was abandoned upon payment of the set registration fee. The method of claim 15,
The air discharged from the total heat exchanger is guided to the air supply pipe through the dehumidification pipe or the air supply pipe through the dehumidification pipe at the connection part of the bypass pipe and the connection part of the pipe and the other end of the bypass pipe and the air supply pipe Waste heat recovery type active humidity control ventilation device, characterized in that each is provided with a three-way valve controlled to guide to. ◈ Claim 17 was abandoned upon payment of the set registration fee. The method of claim 15,
A waste heat recovery type active humidity control ventilation device, characterized in that a plurality of supply air pipes arranged to correspond to each crop bed are provided under the plurality of crop beds located inside the greenhouse. ◈ Claim 18 was abandoned upon payment of the set registration fee. The method of claim 17,
The dehumidification pipe is formed of a single pipe disposed on one side of the greenhouse, and the total heat exchanger and air supply pipe are provided in plural and disposed along the lengthwise direction of the dehumidification pipe. Device. ◈ Claim 19 was abandoned upon payment of the set registration fee. The method of claim 18,
The air supply pipe and the air supply pipe are provided in the same number and are arranged to communicate with each other. A waste heat recovery type active humidity control ventilation method using the waste heat recovery type active humidity control ventilation device according to claim 1,
A vacuum storage step of storing a vacuum in the vacuum pipe;
A humidity measuring step of measuring the humidity of air discharged from the total heat exchanger;
A dehumidifying step of passing the air discharged from the total heat exchanger through the dehumidifying pipe when dehumidification of the air discharged from the total heat exchanger is required, and adsorbing moisture from the air by an adsorbent inside the dehumidifying pipe;
A desorption determination step of determining a time point at which the adsorbent inside the dehumidification pipe needs to be desorbed;
A vacuum degree determining step of determining whether the degree of vacuum inside the vacuum pipe is such that desorption by the low temperature heat source is possible at a time when the adsorbent inside the dehumidifying pipe needs to be desorbed;
Desorption of a low-temperature heat source for desorption of the adsorbent by supplying hot water through a hot water pipe provided inside the dehumidifying pipe by opening an opening/closing valve of a connecting pipe that communicates the vacuum pipe and the dehumidifying pipe step;
A low-temperature heat source desorption stopping step of closing an opening/closing valve of a connection pipe communicating with the vacuum pipe and a dehumidifying pipe when the vacuum degree of the vacuum pipe rises above a predetermined pressure, and stopping hot water supply through the hot water pipe; And
A high-temperature heat source desorption step of performing desorption by the high-temperature heat source by operating a heat transfer pipe provided inside the dehumidifying pipe when additional desorption is required;
Waste heat recovery type active humidity control ventilation method comprising a. ◈ Claim 21 was abandoned upon payment of the set registration fee. The method of claim 20,
When dehumidification of the air discharged from the total heat exchanger is not required, a non-dehumidifying step of bypassing the air discharged from the total heat exchanger so as not to pass through the dehumidifying pipe is further included. Way. ◈ Claim 22 was abandoned upon payment of the set registration fee. The method of claim 20,
The low-temperature heat source desorption step includes a drain step of condensing water vapor introduced into the vacuum pipe during the desorption process and discharging the water accumulated in the lower part of the vacuum pipe to the outside. . ◈ Claim 23 was abandoned upon payment of the set registration fee. The method of claim 20,
The high-temperature heat source desorption step includes a heat storage step of transferring air containing desorbed moisture to a heat storage tank and storing the latent heat of condensation of moisture and the used heat of the condensed water in the heat storage tank. ◈ Claim 24 was abandoned upon payment of the set registration fee. The method of claim 20,
The vacuum storage step is a waste heat recovery type active humidity control ventilation method, characterized in that the vacuum intermittently generated by a renewable energy source is stored inside the vacuum pipe. ◈ Claim 25 was abandoned upon payment of the set registration fee. The method of claim 20,
The high-temperature heat source desorption step is a waste heat recovery type active humidity control ventilation method, characterized in that it proceeds together with the low-temperature heat source desorption step in an emergency situation requiring desorption within a short time.

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