CN204593909U - The solar thermal collector that decalescence is combined with heat pipe - Google Patents

Abstract

The utility model discloses a solar heat collector combined with phase change heat absorption and heat pipes, which utilizes phase change materials to store heat and combines the solar heat collectors with heat pipes. It includes multiple heat pipe vacuum heat absorbing tubes, main header, tail header, phase change energy storage tank and refrigerant heat absorbing tube. The heat pipe type vacuum heat absorbing tube includes vacuum glass tube body and heat pipe. The evaporation section of the heat pipe is installed on Inside the glass tube body, the condensation section of the heat pipe is placed outside the glass tube body; a phase change energy storage box is installed in the main header, and the phase change energy storage box is filled with a phase change energy storage material; the condensation section of the multiple heat pipes Placed in a phase-change energy storage box and covered by a phase-change energy storage material, the heat in the condensation section of the heat pipe is introduced into the phase-change energy storage material through heat-conducting silicone grease; the refrigerant heat-absorbing tube is placed in the phase-change energy storage within the energy material. The solar thermal collector replaces the water tank with a phase-change energy storage tank, which reduces the volume. Moreover, the collected heat can be well continuously accumulated, which ensures the continuous use of the solar heat collector.

Description

Solar collector combined with phase change heat absorption and heat pipe

technical field

The utility model relates to a solar heat collector, in particular to a solar heat collector combined with phase change heat absorption and heat pipes.

Background technique

With the development of the economy and the increasing shortage of energy sources, the development and utilization of new energy sources is the current top priority. With the continuous progress of solar energy technology, solar collectors have been widely promoted and applied.

Although the solar thermal utilization technology has been relatively perfect, the solar energy cannot continuously provide heat because the utilization of the solar energy is affected by the intensity of the solar energy. Moreover, if the accumulated heat cannot be used in time, part of the accumulated heat will be lost. More importantly, when the weather is not good and there is not enough sunlight, the heat accumulated during the day cannot meet the use requirements. If it is not used , after one night of heat dissipation, the heat storage needs to be restarted the next day, and a large part of the absorbed heat is wasted. Therefore, at present, the solar collector is mainly used as an auxiliary heating function. In order to store the collected solar energy, general solar collectors use hot water storage tanks, but the inside of the water tanks is easily corroded, which shortens the service life of the water tanks.

Utility model content

The purpose of the utility model is to provide a solar heat collector which utilizes phase-change materials to store heat and combine heat pipes for the technical defects in the prior art.

The technical scheme adopted for realizing the purpose of this utility model is:

A solar thermal collector combined with phase-change heat absorption and heat pipes, comprising a plurality of heat pipe-type vacuum heat-absorbing pipes, a main header, a tail header, a phase-change energy storage tank, and a refrigerant heat-absorbing pipe. The heat pipe includes a vacuum glass pipe body and a heat pipe. The evaporation section of the heat pipe is installed inside the glass pipe body, and the condensation section of the heat pipe is placed outside the glass pipe body; A variable energy storage box, the phase change energy storage box is filled with a phase change energy storage material; the main header is provided with an insulation layer; the condensation sections of the plurality of heat pipes are placed in the phase change energy storage box And covered by the phase change energy storage material, the heat of the condensation section of the heat pipe is introduced into the phase change energy storage material through thermal conductive silicone grease; the other end of the heat pipe type vacuum heat absorbing tube passes through the tail joint The heat-absorbing pipe of the refrigerant is placed in the phase-change energy-storage material of the phase-change energy-storage box, and the two ends of the heat-absorbing pipe of the refrigerant are respectively connected with The refrigerant inlet connection and the refrigerant outlet connection of the main header.

Heat conduction fins are arranged on the refrigerant heat absorption pipe.

The phase change energy storage material is stearic acid, tristearin, paraffin, sodium sulfate, calcium chloride, magnesium chloride, etc. and hydrates thereof.

The refrigerant heat absorption pipe is made of metal material with strong thermal conductivity.

The refrigerant heat absorption pipe is a copper pipe.

The insulation layer is polyvinyl chloride material.

Compared with the prior art, the beneficial effects of the utility model are:

1. The solar heat collector of this utility model replaces the water tank with a phase-change energy storage tank, which reduces the volume. The continuous use of the heater expands the application range of the solar collector.

2. The solar heat collector of the present utility model utilizes a heat-pipe vacuum glass tube as the heat-absorbing part. In addition to its high heat-absorbing efficiency, the directionality of its heat conduction also contributes to the continuous heat storage of the phase-change energy storage box .

Description of drawings

Fig. 1 shows the schematic diagram of the solar heat collector combined with the phase change heat absorption and heat pipe installed on one side of the heat pipe type vacuum heat absorption pipe;

Fig. 2 is a schematic diagram of a solar heat collector in which a heat pipe type vacuum heat absorption pipe is installed on both sides of a phase change heat absorption combined with a heat pipe.

Detailed ways

Below in conjunction with accompanying drawing and specific embodiment the utility model is described in further detail.

The schematic diagram of the solar heat collector combined with phase change heat absorption and heat pipe of the utility model is shown in Figure 1 and Figure 2, including multiple heat pipe type vacuum heat absorption pipes 5, main header 8, tail header 6, phase change storage The energy box 2, the refrigerant heat-absorbing pipe 3, and the multiple heat-pipe vacuum heat-absorbing pipes 5 can be located on the same side, as shown in Figure 1, or arranged on both sides, as shown in Figure 2. The heat pipe type vacuum heat absorbing tube 5 includes a vacuum glass tube body and a heat pipe, the evaporation section of the heat pipe is installed inside the glass tube body, and the condensation section 4 of the heat pipe is placed outside the glass tube body. A phase change energy storage box 2 is installed in the main header 8, and the phase change energy storage box 2 is filled with a phase change energy storage material. The outside of the main header 8 is provided with an insulating layer 1 . A plurality of condensation sections 4 of the heat pipe are placed in the phase change energy storage box 2 and covered by the phase change energy storage material, and the heat of the condensation section 4 of the heat pipe is introduced into the phase change energy storage materials. The other end of the heat pipe type vacuum heat absorbing pipe is connected as a whole through the tail header 6 . The refrigerant heat absorption pipe 3 is placed in the phase change energy storage material of the phase change energy storage box 2, and the two ends of the refrigerant heat absorption pipe 3 are respectively connected with The refrigerant inlet port and the refrigerant outlet port of header 8 are connected.

For better heat conduction effect, heat conduction fins are arranged on the refrigerant heat absorption pipe 3 . The refrigerant heat absorption pipe 3 is a metal material with strong thermal conductivity, preferably a copper pipe.

The phase change energy storage material is stearic acid, tristearin, paraffin, sodium sulfate, calcium chloride, magnesium chloride, etc. and hydrates thereof.

The insulation layer is polyvinyl chloride material.

Wherein, the refrigerant heat-absorbing pipe can be a water pipe, an air pipe, etc. according to different fields of use. When the solar heat collector of the present utility model is used in a hot water system, the refrigerant is water, and the refrigerant heat-absorbing pipe is a water pipe. When used in a system that directly supplies hot air or adds other heat exchange equipment to exchange heat, the refrigerant is air, and the refrigerant heat-absorbing pipe is an air pipe. The form of its air duct can be a thicker pipeline, also can be several pipelines with the same pipe diameter little.

During the daytime when there is light, the heat absorbed by the evaporation section in the heat pipe type vacuum heat absorbing tube is stored in the phase change energy storage material of the phase change energy storage box. When in use, the refrigerant flows in from the refrigerant inlet port, takes away the heat stored in the energy storage material in the phase change energy storage box 2, directly heats the refrigerant, flows out from the refrigerant outlet port, and directly provides it to the user. If the system is used during the day, part of the heat absorbed by the refrigerant heat-absorbing pipe can be directly transferred to the refrigerant, which improves the efficiency of the heat pipe and increases the heat obtained by the entire system. When the system is not in use, the heat absorbed by the heat pipe vacuum tube can be well stored in the phase change energy storage box, especially when the solar energy is insufficient for several consecutive days, it can ensure the continuous use of the solar collector. The solar heat collector combined with phase change heat absorption and heat pipe of the utility model can store heat when the sun is not very good for several consecutive days, and can basically ensure that there is a very high temperature in the phase change energy storage box, thereby The scope of use has been expanded.

The above is only a preferred embodiment of the utility model, it should be pointed out that for those of ordinary skill in the art, without departing from the principle of the utility model, some improvements and modifications can also be made, these Improvement and retouching should also be regarded as the protection scope of the present utility model.

Claims (6)

1. the decalescence solar thermal collector of combining with heat pipe, it is characterized in that, comprise many hot pipe type vacuum endothermic tubes, main header, tail header, phase-changing energy-storing case and refrigerant endothermic tube, described hot pipe type vacuum endothermic tube comprises canals of stilling and the heat pipe of vacuum, the evaporator section of described heat pipe is installed on described canals of stilling inside, and the condensation segment of described heat pipe is placed in described canals of stilling outside; In described main header, phase-changing energy-storing case is installed, in described phase-changing energy-storing case, is filled with energy storage materials of phase change; Described main header outer setting has heat-insulation layer; The condensation segment of many described heat pipes to be placed in described phase-changing energy-storing case and coated by described energy storage materials of phase change, and the heat of the condensation segment of described heat pipe imports in described energy storage materials of phase change by heat-conducting silicone grease; The other end of described hot pipe type vacuum endothermic tube is linked into an integrated entity by described tail header; Described refrigerant endothermic tube is placed in the energy storage materials of phase change of described phase-changing energy-storing case, and the refrigerant inlet that the two ends of described refrigerant endothermic tube are connected to through described phase-changing energy-storing case and main header is taken over and refrigerant exit adapter.

2. the decalescence according to claim 1 solar thermal collector of combining with heat pipe, is characterized in that, described refrigerant endothermic tube is provided with heat transmission fin.

3. the decalescence according to claim 1 and 2 solar thermal collector of combining with heat pipe, it is characterized in that, described energy storage materials of phase change is stearic acid, three tristearin, paraffin, sodium sulphate, calcium chloride, magnesium chloride and hydrate thereof.

4. the decalescence according to claim 3 solar thermal collector of combining with heat pipe, it is characterized in that, described refrigerant endothermic tube is the metal material that thermal conductivity is strong.

5. the decalescence according to claim 4 solar thermal collector of combining with heat pipe, it is characterized in that, described refrigerant endothermic tube is copper pipe.

6. the decalescence according to claim 5 solar thermal collector of combining with heat pipe, it is characterized in that, described heat-insulation layer is pvc material.