CN220441461U - Energy storage device for greenhouse - Google Patents
Energy storage device for greenhouse Download PDFInfo
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- CN220441461U CN220441461U CN202321705451.6U CN202321705451U CN220441461U CN 220441461 U CN220441461 U CN 220441461U CN 202321705451 U CN202321705451 U CN 202321705451U CN 220441461 U CN220441461 U CN 220441461U
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- greenhouse
- energy storage
- water
- storage device
- heat exchange
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- 238000004146 energy storage Methods 0.000 title claims abstract description 39
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 95
- 239000007788 liquid Substances 0.000 claims description 21
- 238000001816 cooling Methods 0.000 claims description 17
- 239000012782 phase change material Substances 0.000 claims description 14
- 238000005192 partition Methods 0.000 claims description 9
- 239000000126 substance Substances 0.000 claims description 5
- 241000251468 Actinopterygii Species 0.000 claims description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 4
- 239000000654 additive Substances 0.000 claims description 3
- 230000000996 additive effect Effects 0.000 claims description 3
- 229910021389 graphene Inorganic materials 0.000 claims description 2
- 235000015170 shellfish Nutrition 0.000 claims description 2
- 238000009313 farming Methods 0.000 claims 1
- 238000010521 absorption reaction Methods 0.000 description 4
- 238000002474 experimental method Methods 0.000 description 3
- 230000012010 growth Effects 0.000 description 3
- 239000002985 plastic film Substances 0.000 description 3
- 239000002202 Polyethylene glycol Substances 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000005338 heat storage Methods 0.000 description 2
- 229920001903 high density polyethylene Polymers 0.000 description 2
- 239000004700 high-density polyethylene Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000029553 photosynthesis Effects 0.000 description 2
- 238000010672 photosynthesis Methods 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 229920001223 polyethylene glycol Polymers 0.000 description 2
- 239000008399 tap water Substances 0.000 description 2
- 235000020679 tap water Nutrition 0.000 description 2
- 235000013311 vegetables Nutrition 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008635 plant growth Effects 0.000 description 1
- 229920006255 plastic film Polymers 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000029058 respiratory gaseous exchange Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Landscapes
- Greenhouses (AREA)
Abstract
The utility model discloses an energy storage device for a greenhouse, which is provided with a water tank and a circulating heat exchange unit. The water tank can absorb external heat, and the water in the water tank circulates out, so that air and water exchange heat by utilizing air convection, and heat is stored or released. The peak shifting and valley filling of the temperature in the greenhouse are realized, so that the plants are in a proper temperature range. The energy storage device is simple to install, low in cost and obvious in temperature regulation, and can meet the use requirements of people.
Description
Technical Field
The utility model relates to the technical field of agricultural greenhouses, in particular to an energy storage device for heat accumulation and release of greenhouses.
Background
The greenhouse can transmit light, improve the environmental temperature of crops, can be used for planting vegetables, flowers, raising seedlings and the like in seasons unsuitable for plant growth, and is widely applied to the agricultural field in China.
At present, most of the greenhouse put into use adopts simple plastic films and skeleton structures. The temperature difference between day and night is large in winter, the temperature in the daytime is too high, the noon temperature in the greenhouse is higher than 33 ℃, the photosynthesis of crops is stopped, the light respiration is enhanced, and the photosynthesis is weakened. The crop yield is reduced, the high temperature promotes the volatilization of water, the humidity in the greenhouse is increased, and the crop disease risk is increased. The solution is to open the greenhouse in noon, cool down and remove dampness, but waste precious solar heat. The temperature in the greenhouse is low in night or in extreme cold weather, and when the temperature in the greenhouse is lower than the optimal temperature for vegetable growth for a long time, the growth and development of crops are blocked or even frozen. Additional heating equipment is required. In addition to the increased operating costs, there is an additional increase in "carbon emissions".
Therefore, the installation of the energy storage device in the greenhouse becomes an important point of development of people, the redundant heat in the air in the daytime is stored, and the heat is dissipated to the indoor at night when the indoor temperature is low, so that the effect of peak shifting and valley filling is achieved. The temperature in the greenhouse is regulated, so that plants are more suitable in temperature and humidity, the crop yield is improved, and the carbon emission is reduced.
However, the currently adopted energy storage device has the common problems of weak temperature regulation capability, complex equipment, high manufacturing cost, heavy burden of peasants and the like. Therefore, at present, there is still a need to develop an energy storage device capable of effectively adjusting temperature, realizing peak shifting and valley filling, having simple device, easy installation and low manufacturing cost, and adjusting the temperature of a greenhouse so as to meet the use demands of people.
Disclosure of Invention
In order to solve the problems, the utility model provides the energy storage device for the greenhouse, which is provided with the water tank and the circulating heat exchange unit, when the external temperature is high, the water tank can absorb external heat on one hand, and water in the water tank is circulated out on the other hand, the convection device is utilized to exchange heat in air into the water tank, so that the environment temperature is reduced, the heat storage is stored, and when the external temperature is reduced, the water in the water tank is circulated out, so that the temperature in the greenhouse is increased through convection. Thereby realizing peak shifting and valley filling of the temperature in the greenhouse and enabling the plants to be in a proper temperature range. The energy storage device is simple to install, low in cost and obvious in temperature regulation, and can meet the use requirement of the greenhouse.
The utility model aims to provide an energy storage device for a greenhouse, which comprises a water tank, a heat exchange unit and a circulating pipeline, wherein the water tank body is transparent, and a heat exchange liquid medium is introduced into the water tank. The heat exchange liquid medium comprises water.
And a partition board is arranged in the water tank, and phase change materials and/or photo-thermal substances are filled in the partition board.
The water tank is communicated with the heat exchange unit through a circulating pipeline.
The heat exchange unit is provided with a plurality of cooling pipes,
the fan is arranged above or below the adjacent cooling pipes, so that air in the greenhouse forms downward airflow.
The utility model has the following beneficial effects:
(1) The greenhouse energy storage device adopts water as an energy storage medium for absorbing and releasing heat, is easy to obtain, has low cost and greatly reduces the cost of the greenhouse.
(2) According to the utility model, the transparent water tank is used for storing the heat exchange liquid medium, so that the heat in the sun and the greenhouse is directly received, the heat can be absorbed more quickly, the heat storage is realized, and the temperature in the greenhouse is reduced.
(3) The heat exchange unit is also arranged in the utility model, and exchanges heat exchange liquid medium to form convection with air, so that heat exchange is further promoted, when the temperature is high, heat is absorbed, and when the temperature is low, heat is released, so that the temperature in the greenhouse is kept in a temperature range suitable for crop growth.
(4) The greenhouse energy storage device is simple in structure, easy to install and use in the greenhouse, convenient to construct, simple in structure, low in cost and suitable for popularization and application in the actual greenhouse.
Drawings
FIG. 1 shows a schematic diagram of a greenhouse energy storage device in the present utility model;
FIG. 2 shows temperature change curves of the experimental greenhouse and the control greenhouse in example 1 of the present utility model;
FIG. 3 shows the humidity change curves of the experimental greenhouse and the control greenhouse in example 1 of the present utility model;
FIG. 4 shows temperature change curves of the experimental greenhouse and the control greenhouse in the overcast, rainy and snowy weather for three consecutive days in example 2 of the present utility model;
fig. 5 shows temperature change curves of the experimental greenhouse and the control greenhouse in normal weather in example 2 of the present utility model.
Description of the reference numerals
1-a water tank;
101-a separator;
2-a heat exchange unit;
201-phase change material tube;
202-cooling pipes;
203-a fan;
204-a fixed disk;
3-a circulation pipeline;
301-a water outlet circulation pipe;
302-a water inlet circulation pipe;
303-water pump.
Detailed Description
The utility model is described in further detail below with reference to the drawings and the embodiments. The features and advantages of the present utility model will become more apparent from the description.
The utility model provides an energy storage device for a greenhouse, which comprises a water tank 1, a heat exchange unit 2 and a circulating pipeline 3, and is particularly shown in figure 1.
The water tank 1 is transparent, and the heat exchange liquid medium is introduced into the water tank 1, so that the water tank can directly receive external sunlight irradiation, absorb heat and realize energy storage. The heat exchange liquid medium comprises water. Experiments show that the direct absorption of radiant heat is a very effective energy storage mode. The water tank 1 is a transparent container, can directly absorb the radiant heat of the sun, and can well absorb the near infrared radiant heat of sunlight because of the frequency doubling of the vibration of water molecules, thereby playing a role in cooling the greenhouse.
In one embodiment of the utility model, the heat exchange liquid medium further comprises a black additive selected from one or more of black dye, ink and graphene, preferably ink. And a black additive is added into the heat exchange liquid medium to make the water body appear black, so that the heat absorption of the water body in the water tank 1 can be improved. The ink has good dispersibility, can be uniformly dispersed in the water body for a long time, and has low cost.
In another embodiment of the utility model, aquatic organisms, such as fish, shellfish, etc., preferably fish, are added to the tank 1. The water tank 1 is fully utilized while energy storage is realized, the utilization rate of the greenhouse is improved, the income of farmers is improved, fish swims in the water tank, and the flow of water in the water tank 1 can be promoted.
In a preferred embodiment of the present utility model, a partition 101 is provided inside the water tank 1, and the partition 101 is filled with a phase change material and/or a photo-thermal substance. The phase change material is polyethylene glycol, and the photo-thermal substance is black high-density polyethylene.
The partition plate 101 keeps a distance from the inner wall of the tank body, when the heat exchange liquid medium in the tank body circulates in and out of the water tank 1, convection of the liquid medium in the tank body can be formed due to the blocking of the partition plate 101, mixing is promoted, and the exchange and absorption of heat in the tank body are enhanced.
The water tank 1 is communicated with the heat exchange unit 2 through a circulating pipeline 3. The circulation line 3 includes an outlet circulation pipe 301 and an inlet circulation pipe 302. The water outlet of the water tank 1 is communicated with the water inlet of the heat exchange unit 2 through a water outlet circulating pipe 301, and the water inlet of the water tank 1 is communicated with the water outlet of the heat exchange unit 2 through a water inlet circulating pipe 302. A water pump 303 is provided to the outlet circulation pipe 301 or the inlet circulation pipe 302 to circulate the heat exchange liquid medium. The heat exchange liquid medium can exchange heat with the air inside the greenhouse while flowing inside the water outlet circulation pipe 301 and the water inlet circulation pipe 302.
The heat exchange unit 2 is provided with a plurality of cooling pipes 202, the cooling pipes 202 are communicated through pipelines, and a heat exchange liquid medium enters each cooling pipe 202 through an outlet water circulating pipe 301 and is circulated back to the water tank 1 through a water inlet circulating pipe 302. The fan 203 is disposed above or below the adjacent cooling pipes 202 to cause air in the greenhouse to form a downward flow of air, thereby causing the air to exchange heat with the cooling pipes 202.
The heat exchange unit 2 is further provided with a plurality of phase change material pipes 201, which are arranged in an array and in the air outlet direction of the fan 203, and the fan 203 is used to make air and the phase change material inside the phase change material pipes 201 complete heat exchange. Preferably, the phase change material pipe 201 is fixed by a fixed disk 204.
When the temperature inside the greenhouse rises, the heat exchange liquid medium enters the cooling pipe 202 to absorb heat of air convected by the heat exchange liquid medium, so that the temperature of air flow is reduced, and meanwhile, the water tank 1, the water outlet circulating pipe 301 and the water outlet circulating pipe 301 can also absorb heat of the inside of the greenhouse and direct sunlight to store energy, so that the temperature inside the greenhouse is reduced. In addition, the fan 203 exchanges heat between the air and the phase change material tube 201, and absorbs heat.
When the temperature inside the greenhouse is reduced, the heat exchange liquid medium enters the cooling pipe 202 and the phase change material pipe 201 to release the stored heat into the air, and after the air is convected with the heat exchange liquid medium, the heat is absorbed, so that the temperature inside the greenhouse is increased.
The greenhouse energy storage device is arranged in the greenhouse, preferably, the greenhouse energy storage device is arranged on the inner side of a north wall or a western wall of the greenhouse, such as the inner side of the north wall.
The greenhouse energy storage device provided by the utility model adopts the water phase which is cheap and easy to obtain as the heat exchange liquid medium, is energy-saving and environment-friendly, has low cost, is easy to obtain, has fast heat absorption, can conveniently and rapidly realize energy storage, and reduces the economic burden of farmers. In addition, the energy storage device of the utility model utilizes the heat exchange unit to circularly absorb heat, so as to realize peak shifting and valley filling of the temperature of the greenhouse, enable crops to be in a proper temperature range and prevent the influence of excessive high or low temperature on the plant crops.
Examples
The utility model is further described below by means of specific examples, which are however only exemplary and do not constitute any limitation on the scope of protection of the utility model.
Example 1
In Beijing winterAnd (5) carrying out a temperature regulation experiment in the greenhouse. The greenhouses are separated to form two independent greenhouses. The greenhouse energy storage device provided by the utility model is arranged at the north wall of one greenhouse (experimental greenhouse); the other greenhouse is not provided with an energy storage device (comparison greenhouse). The occupied area of the two greenhouses is 120m 2 The highest height is 5m.
The device is provided with a water tank 1 (without a heat exchange unit 2 and a circulation line 3) of 3 dimensions of 4m long by 0.7m wide by 1.5m high. The water tank 1 adopts a transparent plastic film as the wall of the water tank, and tap water is filled in the water tank.
The temperature change in five days (from 1 in the morning of 12 months 27 to 22 in the evening of 12 months 31) was continuously recorded, and the temperature in the two greenhouses was recorded every three hours, and the temperature change curve is shown in fig. 2. As can be seen from FIG. 2, the addition of the energy storage device of the greenhouse can reduce the maximum temperature of the midday greenhouse by 4 ℃ and increase the minimum temperature of the greenhouse at night by 2-3 ℃.
Humidity was continuously recorded for 12 months 17 to 31 days of midday and midnight, and the humidity change curve is shown in fig. 3. As can be seen from FIG. 3, the greenhouse energy storage device can obviously reduce the midday humidity and improve the night humidity.
Example 2
Temperature adjustment experiments were performed in the same control greenhouse and experimental greenhouse as in example 1. The device is provided with a water tank 1, a heat exchange unit 2 and a circulating pipeline 3.
The water tank 1 adopts a transparent plastic film as the wall of the water tank, and is internally filled with tap water, and the size of the water tank is 3 tanks with the length of 4m multiplied by the width of 0.7m multiplied by the height of 1.5 m. And a separator 101 filled with a phase change material (polyethylene glycol) and a photo-thermal substance (black high density polyethylene) is provided, the separator 101 having dimensions of 3.5m long by 0.05m wide by 1m high.
A water pump 303 is arranged on the water outlet circulation pipe 301. In the heat exchange unit 2, a cooling pipe 202 is arranged at the top, a fan 203 is arranged near the lower part of the cooling pipe, downward air flow is formed, and the air flows into the array of the phase change energy storage pipes 201 below the fan 203.
The length of the water outlet circulation pipe 301 and the water inlet circulation pipe 302 is 5m, and the internal water circulation flow rate is 2m 3 And/h, the total water amount in the cooling pipe 201 is 10L.
The temperatures of the experimental greenhouse and the control greenhouse are measured continuously from 1 month 11 days in the morning to 1 month 13 days in the night at 22 points, and the temperature change curve is shown in figure 4. The days 1-11 and 1-13 are overcast, rainy and snowy days.
As can be seen from fig. 4, the experimental greenhouse with the energy storage device can maintain the temperature in the greenhouse to some extent in the substantial absence of solar radiation.
The temperature change of the two greenhouses is measured under normal weather (the external environment temperature is-3 to-14 ℃) for 1 month and 23 days, and the temperature change curve is shown in figure 5. As can be seen from FIG. 5, the temperature in the experimental greenhouse can be still increased by 1-3 ℃ at night and increased by 3.8 ℃ at maximum in the daytime when compared with the control greenhouse at the external temperature of-3 to-14 ℃.
The present utility model has been described in detail in connection with the detailed description and/or the exemplary examples and the accompanying drawings, but the description is not to be construed as limiting the utility model. It will be understood by those skilled in the art that various equivalent substitutions, modifications or improvements may be made to the technical solution of the present utility model and its embodiments without departing from the spirit and scope of the present utility model, and these fall within the scope of the present utility model. The scope of the utility model is defined by the appended claims.
Claims (10)
1. The energy storage device for the greenhouse is characterized by comprising a water tank (1), a heat exchange unit (2) and a circulating pipeline (3), wherein the water tank (1) is transparent, a heat exchange liquid medium is introduced into the water tank (1),
the water tank (1) is communicated with the heat exchange unit (2) through a circulating pipeline (3), the circulating pipeline (3) comprises a water outlet circulating pipe (301) and a water inlet circulating pipe (302), a water outlet of the water tank (1) is communicated with a water inlet of the heat exchange unit (2) through the water outlet circulating pipe (301), a water inlet of the water tank (1) is communicated with a water outlet of the heat exchange unit (2) through the water inlet circulating pipe (302),
the heat exchange unit (2) is provided with a plurality of cooling pipes (202), and the fan (203) is arranged above or below the adjacent cooling pipes (202).
2. The energy storage device of claim 1, wherein said heat exchange liquid medium comprises water,
the heat exchange liquid medium further comprises a black additive selected from one or more of black dye, ink and graphene.
3. The energy storage device for greenhouses according to claim 1, characterized in that a partition (101) is arranged inside the water tank (1).
4. A greenhouse energy storage device according to claim 3, characterized in that the partition (101) is internally filled with phase change material and/or photo-thermal substances.
5. A device according to claim 3, characterized in that the partition (101) is spaced from the inner wall of the tank.
6. The energy storage device of a greenhouse according to claim 1, characterized in that a water pump (303) is arranged on the water outlet circulation pipe (301) or the water inlet circulation pipe (302).
7. The energy storage device for greenhouses according to claim 1, wherein the cooling pipes (202) are connected by a pipeline.
8. The energy storage device of a greenhouse according to claim 1, characterized in that the heat exchange unit (2) is further provided with a number of phase change material tubes (201) forming an array.
9. The energy storage device of a greenhouse according to claim 8, characterized in that the phase change material pipe (201) is arranged in the air outlet direction of the fan (203).
10. The energy storage device of a greenhouse according to claim 2, characterized in that water-farming organisms, selected from fish and/or shellfish, are added to the water tank (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321705451.6U CN220441461U (en) | 2023-06-30 | 2023-06-30 | Energy storage device for greenhouse |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321705451.6U CN220441461U (en) | 2023-06-30 | 2023-06-30 | Energy storage device for greenhouse |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220441461U true CN220441461U (en) | 2024-02-06 |
Family
ID=89730780
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321705451.6U Active CN220441461U (en) | 2023-06-30 | 2023-06-30 | Energy storage device for greenhouse |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220441461U (en) |
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2023
- 2023-06-30 CN CN202321705451.6U patent/CN220441461U/en active Active
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