CN212013820U - A solar greenhouse water cycle heat release device - Google Patents

Abstract

The utility model discloses a water circulation heat release device for a solar greenhouse, which belongs to the technical field of heat collection and release for agricultural solar greenhouses. The device is composed of a radiator, a water supply pipeline and a return water pipeline, which is a closed water circulation system, and is connected to a water pump in a reservoir; the device is automatically controlled by a temperature sensor and an automatic control system. The device separates the water circulation heat release device and the heat storage device, and is installed in the lower part of the solar greenhouse. The developed heat release device can be combined with various solar energy utilization systems with water circulation heat storage. Among them, the water supply pipeline, radiator and return water pipeline are all installed on the south side of the greenhouse; when there is sunshine, it is a collector, and when there is no sunshine, it is a radiator. The device can effectively release heat at night, increase the nighttime temperature of the solar greenhouse, improve the thermal environment of the entire greenhouse, and improve the utilization efficiency of solar energy in the solar greenhouse.

Description

A solar greenhouse water cycle heat release device

technical field

The utility model belongs to the technical field of heat collection and release of agricultural solar greenhouses. In particular, it relates to a water circulation heat release device in a solar greenhouse.

Background technique

In a solar greenhouse, a water cycle heat storage and heat release system is usually used to collect and utilize the excess solar radiation energy to cope with severe weather such as severe cold. Among the heat storage and heat release systems, the solar heat storage and heat release system installed inside the greenhouse is simple, effective and economical, and can effectively improve the heat storage and heat release capacity of the greenhouse. However, in order to receive the maximum solar radiation, improve the heat storage efficiency, and at the same time reduce the cost, this solar energy utilization system is usually a heat storage device that doubles as a heat release device, and is installed on the upper part of the greenhouse. As a result, although the maximum heat storage is ensured, the space that needs to be heated at night in the greenhouse is usually the lower part of the greenhouse where the crops grow, and the upper part releases heat. Under the action of the indoor hot air floating, the heating effect will be affected; The heat position is close to the light-transmitting surface, and part of the heat is easily dissipated to the outside, which reduces the utilization efficiency of the accumulated heat.

Utility model content

The purpose of the utility model is to aim at the deficiencies of the prior art, in order to improve the utilization efficiency of accumulated solar energy, a solar greenhouse water cycle heat release device is proposed; the solar greenhouse water cycle heat release device combines a water cycle heat release device and a heat storage device It is installed in the lower part of the solar greenhouse; the heat release device is combined with the solar energy utilization system that has various water cycle heat storage; it is characterized in that the water cycle heat release device for the solar greenhouse includes a water storage tank 1, a circulating water pump 2. Water temperature sensor 3, room temperature sensor 4, automatic control system 5, water supply pipeline 6, regulating valve 7, radiator 8, automatic exhaust valve 9, return water pipeline 10, water separator 11 and water collector 12. Among them, the circulating water pump 2 is arranged in the reservoir 1; the water inlet of the circulating water pump 2 is submerged into the water in the reservoir 1, and the water outlet is communicated with the water supply pipeline 6; the water supply pipeline 6 is communicated with the water separator 11, and the water separator 11 is communicated with the water supply end of the radiator 8; the return end of the radiator 8 is communicated with the water collector 12; an automatic exhaust valve 9 is installed on the upper end of the water collector 12 to discharge the air in the device and make the water path unobstructed; the reservoir 1 is communicated with the return water pipeline 10, and the return water pipeline 10 is connected with the water collector 12; the water temperature sensor 3 is installed in the reservoir 1; the automatic control system 5 is respectively connected with the circulating water pump 2, the water temperature sensor 3, and the room temperature sensor 4 .

The circulating water pump 2 is a submersible pump, and an appropriate water pump is selected according to actual needs.

The water supply pipeline 6, the radiator 8, the return water pipeline 10, the water distributor 11 and the water collector 12 are made of U-PVC or PPR plastic or galvanized iron pipe; according to the heat release, select an appropriate pipe diameter.

The water supply pipeline 6 is provided with a regulating valve 7 for regulating water pressure and flow.

The radiator 8 is connected with a plurality of water pipes in parallel, arranged up and down along the length direction of the greenhouse.

The water supply pipeline 6, the radiator 8 and the return water pipeline 10 are all installed on the south side of the greenhouse; when there is sunlight, it is a collector, and when there is no sunlight, it is a radiator.

The beneficial effects of the present utility model are:

1) The device is installed at the bottom of the south wall and uses water as a heat release medium to release the heat accumulated during the day at night to meet the needs of solar greenhouse crops.

2) The radiators of the device are arranged in parallel, and the water flow resistance is low, which can greatly reduce the loss of hydraulic power.

3) The device is easy to install, low in cost, strong in versatility, simple in operation, economical and practical.

4) The device can set different critical temperatures in different periods to meet actual production needs. Do the heat release in an orderly manner.

5) The device can increase the indoor temperature at night, which is beneficial to the growth of plants, reduces the occurrence of diseases, and improves the quality of products.

6) The device is placed at the bottom of the south wall and does not occupy the planting area. It can heat the greenhouse without affecting the normal planting of the greenhouse.

7) The device acts on the crop canopy area and improves the utilization rate of solar energy.

Description of drawings

Figure 1 is a schematic diagram of the structure of a water circulation heat release device in a solar greenhouse.

Detailed ways

The utility model provides a water circulation heat release device in a solar greenhouse; the water circulation heat release device and the heat storage device are separated and installed at the lower part of the solar greenhouse. The developed heat release device can be combined with various solar energy utilization systems with water circulation heat storage. When the heat is released at night, the heat release mode is activated to release heat in the lower space, and the hot air can quickly diffuse to the crop canopy area. At the same time, the principle of hot air floating can be used to achieve the purpose of heating the entire planting area. The present utility model will be further described below in conjunction with the accompanying drawings and embodiments.

Figure 1 shows a schematic diagram of the structure of the water circulation heat release device of the solar greenhouse. The water circulation heat release device includes a reservoir 1, a circulating water pump 2, a water temperature sensor 3, a room temperature sensor 4, an automatic control system 5, a water supply pipeline 6, a regulating valve 7, a radiator 8, an automatic exhaust valve 9, and a return water pipeline. 10. The water separator 11 and the water collector 12. Among them, the circulating water pump 2 is arranged in the reservoir 1; the water inlet of the circulating water pump 2 is submerged into the water in the reservoir 1, and the water outlet is communicated with the water supply pipeline 6; the water supply pipeline 6 is communicated with the water separator 11, and the water separator 11 is communicated with the water supply end of the radiator 8; the return end of the radiator 8 is communicated with the water collector 12; an automatic exhaust valve 9 is installed on the upper end of the water collector 12 to discharge the air in the device and make the water path unobstructed; the reservoir 1 is communicated with the return water pipeline 10, and the return water pipeline 10 is connected with the water collector 12; the water temperature sensor 3 is installed in the reservoir 1; the automatic control system 5 is respectively connected with the circulating water pump 2, the water temperature sensor 3, and the room temperature sensor 4 .

The circulating water pump 2 is a submersible pump, and an appropriate water pump is selected according to actual needs.

The water supply pipeline 6, the radiator 8, the return water pipeline 10, the water distributor 11 and the water collector 12 are made of U-PVC or PPR plastic or galvanized iron pipe; according to the heat release, select an appropriate pipe diameter.

The water supply pipeline 6 is provided with a regulating valve 7 for regulating water pressure and flow.

The radiator 8 is connected with a plurality of water pipes in parallel, arranged up and down along the length direction of the greenhouse.

The water supply pipeline 6, the radiator 8 and the return water pipeline 10 are all installed on the south side of the greenhouse; when there is sunlight, it is a collector, and when there is no sunlight, it is a radiator.

The working process of the utility model is as follows:

Start the automatic control system 5 and set the maximum and minimum temperatures of the water temperature sensor 3 and the minimum temperature of the room temperature sensor 4 . The water temperature sensor 3 and the room temperature sensor 4 regularly detect the water temperature and room temperature.

Evening: When the room temperature detected by the room temperature sensor 4 is less than the minimum room temperature and the water temperature detected by the water temperature sensor 3 is greater than the minimum temperature, the automatic control system 5 starts the circulating water pump 2, so that the water in the reservoir 1 passes through the water supply pipelines 6, The water separator 11 , the radiator 9 , the water collector 12 , and the return water pipeline 10 circulate and flow. When the water flows through the radiator 8 , the heat in the water is continuously transferred to the indoor air through the radiator 8 , and the water after releasing the heat flows back to the water storage tank 1 through the return pipe 10 . By releasing the heat in the water into the room, the temperature in the greenhouse is increased; at the same time, the temperature of the water in the reservoir 1 is continuously lowered.

When the room temperature detected by the room temperature sensor 4 is greater than the minimum room temperature or the water temperature detected by the water temperature sensor 3 is lower than the minimum water temperature, the automatic control device 5 turns off the circulating water pump 2, and the exothermic work stops.

To sum up, the heat releasing device used in the solar greenhouse of the present invention can increase the temperature of the greenhouse by releasing the heat stored in the pool of solar thermal energy during the day at night to increase the temperature of the greenhouse. sequence release.

Claims (6)

1. A water circulation heat release device for a solar greenhouse; the water circulation heat release device for a solar greenhouse separates the water circulation heat release device from the heat storage device, and is installed at the lower part of the solar greenhouse; the heat release device and existing various water circulation heat storage devices It is characterized in that the water circulation heat release device used in the solar greenhouse includes a water storage tank (1), a circulating water pump (2), a water temperature sensor (3), a room temperature sensor (4), an automatic control System (5), water supply pipeline (6), regulating valve (7), radiator (8), automatic exhaust valve (9), return water pipeline (10), water distributor (11) and water collector ( 12); wherein, the circulating water pump (2) is arranged in the reservoir (1); the water inlet of the circulating water pump (2) is submerged into the water in the reservoir (1), and the water outlet is communicated with the water supply pipeline (6); The pipeline (6) is communicated with the water separator (11), and the water separator (11) is communicated with the water supply end of the radiator (8); the return end of the radiator (8) is communicated with the water collector (12); An automatic exhaust valve (9) is installed on the upper end of the device (12) to discharge the air in the device and make the water path unobstructed; The water temperature sensor (3) is installed in the reservoir (1); the automatic control system (5) is respectively connected with the circulating water pump (2), the water temperature sensor (3) and the room temperature sensor (4). 2 . The water circulation heat release device for solar greenhouse according to claim 1 , wherein the circulating water pump ( 2 ) is a submersible pump, and an appropriate water pump is selected according to actual needs. 3 . 3. A solar greenhouse water circulation heat release device according to claim 1; characterized in that the water supply pipeline (6), the radiator (8), the return water pipeline (10), the water separator (11) And the material of the water collector (12) is U-PVC or PPR plastic or galvanized iron pipe; according to the heat release, an appropriate pipe diameter is selected. 4. A water circulation heat release device for solar greenhouse according to claim 1; characterized in that, the water supply pipeline (6) is provided with a regulating valve (7) for regulating water pressure and flow. 5. A solar greenhouse water circulation heat release device according to claim 1; characterized in that, the radiator (8) is a parallel connection of a plurality of water pipes, arranged up and down along the length direction of the greenhouse, and the water supply end of the radiator (8) The water separator (11) is connected, and the water return end is connected to the water collector (12). 6. A solar greenhouse water circulation heat release device according to claim 1; characterized in that, the water supply pipeline (6), the radiator (8) and the return water pipeline (10) are all installed on the south side of the greenhouse ; When there is sunlight, it is a collector, and when there is no sunlight, it is a radiator.

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