A light and heat type heat-storable energy tower heat pump

Abstract

A kind of light and heat type energy tower heat storage energy tower heat pump.It includes energy tower, heat storage circulating pump, heat pump unit, heat preservation water tank, circulating water pipeline, energy storage pipeline and circulating pump;Energy tower includes surface sandwich, fan and tower inner heat exchanger;Heat pump unit is connected with energy tower by circulating water pipeline;Heat preservation water tank is internally provided with water distributor;Energy tower is connected with heat preservation water tank by energy storage pipeline;The utility model discloses the effect that can utilize energy tower and the cooperation of heat preservation water tank completes heat storage, so it can greatly improve the utilization of light and heat, and it has important significance for the sheet application of energy tower, environmental protection.Additionally, the structure of existing energy tower is not changed basically, and the site of setting heat preservation water tank is easy to find, so it is low in cost and good in economy.

Description

Technical Field

[0001] This utility model belongs to the field of solar thermal energy storage technology, and specifically relates to a solar thermal energy tower heat pump that can store heat. Background Technology

[0002] An energy tower heat pump is a technology that uses heat exchange through an energy tower and the action of a heat pump unit to provide heating, cooling, and hot water. The energy tower utilizes the contact between water and air, with a heat exchange area designed according to the heating load capacity in winter. Using a carrier medium with a freezing point below zero, it efficiently extracts low-grade heat energy from the relatively humid air in a low-temperature environment. By inputting a small amount of high-grade energy into the heat pump unit, the low-grade heat energy can be transferred to high-grade heat energy in a low-temperature environment, thereby providing heating and hot water to the building.

[0003] Traditional energy towers have the advantages of small footprint and can provide heating simply by being coupled with a heat pump unit.

[0004] However, the drawbacks of this type of energy tower are that its efficiency is very low when the temperature drops below zero, and it may shut down due to frost. In addition, the heating season in winter is relatively short, resulting in low equipment utilization. Furthermore, due to the scarcity of space in cities, finding backup heat sources is extremely difficult. Therefore, solving both the space problem and supplementing the heat source during low-temperature periods has become an important breakthrough direction for energy tower heat pump technology. Summary of the Invention

[0005] In order to solve the above problems, the purpose of this utility model is to provide a solar thermal energy tower heat pump.

[0006] To achieve the above objectives, the solar thermal energy tower heat pump provided by this utility model includes an energy tower, a heat storage circulating pump, a heat pump unit, an insulated water tank, circulating water pipelines, energy storage pipelines, and a circulating pump. The energy tower is installed in an outdoor environment exposed to direct sunlight and includes a surface jacket, a fan, and an internal heat exchanger. An opening is formed at the upper end of the surface jacket, and a coil is installed inside. A main inlet and a main outlet are respectively located on both sides. The internal heat exchanger is located within the space enclosed by the surface jacket, and its inlet and outlet are connected to the inner ports of the main inlet and main outlet, respectively. The fan is installed at the upper opening of the surface jacket. The heat pump unit's heat pump inlet and outlet are connected to the main outlet and main inlet ports on the energy tower via circulating water pipelines, respectively. The circulating pump is connected to a circulating water pipeline. The insulated water tank is located on the ground and has a water distributor inside. The insulated water tank inlet and outlet are located on both sides of the top surface, respectively. One end of an energy storage pipeline is located inside one side of the surface interlayer, and the other end passes through the insulated water tank inlet and connects to the water distributor. One end of another energy storage pipeline is located inside the other side of the surface interlayer, and the other end is connected to the outlet of the insulated water tank. The heat storage circulating pump is connected to an energy storage pipeline.

[0007] Both the energy tower and the insulated water tank are cylindrical structures made of metal.

[0008] The solar thermal energy tower heat pump provided by this utility model has the following beneficial effects:

[0009] Heat storage can be achieved by combining energy towers with insulated water tanks, thus significantly improving the utilization rate of solar thermal energy. This is of great significance for the large-scale application of energy towers and environmental protection. In addition, the structure of existing energy towers remains largely unchanged, and sites for installing insulated water tanks are easy to find, resulting in low cost and good economic efficiency. Attached Figure Description

[0010] Figure 1 A schematic diagram of the solar thermal energy tower heat pump structure provided by this utility model. Detailed Implementation

[0011] The photothermal energy tower heat pump provided by this utility model will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0012] like Figure 1 As shown, the solar thermal energy tower heat pump provided by this utility model includes an energy tower 1, a heat storage circulation pump 2, a heat pump unit 3, an insulated water tank 4, a circulating water pipeline 5, an energy storage pipeline 6, and a circulation pump 17. The energy tower 1 is installed in an outdoor environment exposed to direct sunlight and includes a surface jacket 7, a fan 8, and an internal heat exchanger 9. The surface jacket 7 has an opening at its upper end, with a coil inside, and a main inlet 10 and a main outlet 11 on both sides. The internal heat exchanger 9 is located within the space enclosed by the surface jacket 7, and its inlet and outlet are connected to the inner ports of the main inlet 10 and main outlet 11, respectively. The fan 8 is installed at the upper opening of the surface jacket 7 to accelerate air circulation, thereby improving the heat exchange between the water inside the internal heat exchanger 9 and the external environment. Heat exchange with the outside air; the heat pump inlet 12 and heat pump outlet 13 on the heat pump unit 3 are connected to the outer ports of the main outlet 11 and main inlet 10 on the energy tower 1 through the circulating water pipeline 5 respectively; the circulating pump 17 is connected to a circulating water pipeline 5; the insulated water tank 4 is set on the ground, with a water distributor 14 inside, and insulated water tank inlet 15 and insulated water tank outlet 16 on both sides of the top surface respectively; one end of an energy storage pipeline 6 is set inside one side of the surface interlayer 7, and the other end passes through the insulated water tank inlet 15 and is connected to the water distributor 14; one end of another energy storage pipeline 6 is set inside the other side of the surface interlayer 7, and the other end is connected to the insulated water tank outlet 16; the heat storage circulating pump 2 is connected to an energy storage pipeline 6.

[0013] Both the energy tower 1 and the insulated water tank 4 are cylindrical structures made of metal.

[0014] The working principle of the solar thermal energy tower heat pump provided by this utility model is described below:

[0015] Before use, the circulating water pipeline 5, the heat exchanger 9 inside the tower, the heat pump unit 3, the energy storage pipeline 6, and the insulated water tank 4 are filled with circulating water. After the operation starts, when the low-temperature circulating water enters the heat exchanger 9 inside the tower from the main outlet 11 on the energy tower 1, it exchanges heat with the hot air under the sun and becomes high-temperature circulating water. Then, under the action of the circulating pump 17, it enters the heat pump unit 3 through the main outlet 11, the circulating water pipeline 5, and the heat pump inlet 12, raising the temperature of the indoor circulating water and turning it back into low-temperature circulating water. Finally, it flows back to the heat exchanger 9 inside the tower through the circulating water pipeline 5 and the main outlet 11, thus completing one cycle.

[0016] During this process, the low-temperature circulating water in the inner coil of the surface jacket 7 exchanges heat with the hot air under the sun and becomes high-temperature circulating water. The high-temperature circulating water flows into the water distributor 14 through the energy storage pipeline 6 and the inlet 15 of the insulated water tank. After circulating in the insulated water tank 4, the low-temperature circulating water is returned to the coil through the outlet 16 of the insulated water tank by the heat storage circulation pump 2 to continue to be heated by solar radiation. This causes the temperature of the circulating water to rise.

[0017] At the beginning of the heating season, energy tower 1 and heat pump unit 3 work in tandem. Energy tower 1 obtains low-grade heat from the air and transports it to heat pump unit 3. After being heated, hot water is obtained and supplied to the end of the building. However, in the middle stage of the heating season when the temperature is low, especially after the temperature drops below zero, the heat-obtaining capacity of energy tower 1 decreases rapidly and cannot meet the heating needs of the building.

[0018] Because the energy tower 1 in this application has a built-in surface jacket 7, which is a solar thermal component, and coils are installed inside the surface jacket 7, with softened water circulating inside, it continuously exchanges heat with the hot air under sunlight during sunny periods through the matching heat storage circulation pump 2, obtaining heat and then transferring and storing the heat to the insulated water tank 4. When the heat is insufficient during low-temperature periods, the insulated water tank 4 can provide supplementary heat to supply heat to the end of the building. Therefore, it can effectively increase the annual heat supply and solve the problem of clean heating in cities without significantly increasing the initial investment and with very low operating costs.

Claims

1. A solar thermal energy storage tower heat pump, characterized in that: The solar thermal energy tower heat pump includes an energy tower (1), a heat storage circulating pump (2), a heat pump unit (3), an insulated water tank (4), a circulating water pipeline (5), an energy storage pipeline (6), and a circulating pump (17); wherein, the energy tower (1) is set in an outdoor environment exposed to direct sunlight, and includes a surface jacket (7), a fan (8), and an internal heat exchanger (9); the upper end of the surface jacket (7) has an opening, and a coil is provided inside, with a main inlet (10) and a main outlet (11) on both sides respectively; the internal heat exchanger (9) is set in the space enclosed by the surface jacket (7), and the inlet and outlet are connected to the inner ports of the main inlet (10) and the main outlet (11) respectively; the fan (8) is installed at the upper opening of the surface jacket (7); the circulating pump (17) is connected to a... On the circulating water pipeline (5); the heat pump inlet (12) and heat pump outlet (13) on the heat pump unit (3) are connected to the outer ports of the main outlet (11) and main inlet (10) on the energy tower (1) through the circulating water pipeline (5); the insulated water tank (4) is set on the ground, with a water distributor (14) inside, and an insulated water tank inlet (15) and an insulated water tank outlet (16) on both sides of the top surface; one end of an energy storage pipeline (6) is set inside one side of the surface interlayer (7), and the other end passes through the insulated water tank inlet (15) and is connected to the water distributor (14); one end of another energy storage pipeline (6) is set inside the other side of the surface interlayer (7), and the other end is connected to the insulated water tank outlet (16); the heat storage circulating pump (2) is connected to an energy storage pipeline (6).

2. The solar thermal energy tower heat pump according to claim 1, characterized in that: Both the energy tower (1) and the insulated water tank (4) are cylindrical structures made of metal.

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