CN203432105U - Heat pipe type solar flat plate collector - Google Patents

Abstract

The utility model discloses a heat pipe type solar panel heat collector, which comprises an upper circulation header, a lower circulation header and a heat pipe arranged between the upper and lower circulation headers, and the upper and lower ends of the heat pipe are respectively vertically inserted into the upper , The lower circulation header, the insertion part is a condensation section, the heat pipe has two condensation sections, and the evaporation section is between the condensation sections. The utility model has the advantages of simple structure, high thermal efficiency, large water production, and reduced heat loss. , Easy installation and low maintenance cost.

Description

A kind of heat pipe type solar panel heat collector

technical field

The utility model relates to the field of solar heat utilization, in particular to a heat pipe type solar panel heat collector.

Background technique

As a phase change heat transfer element, heat pipe has extremely high thermal conductivity and has been widely used in microelectronics, aerospace and other fields. With the development of solar thermal utilization technology, the application of heat pipes in solar flat panel collectors has attracted the attention of many enterprises and scholars. , the heat pipe has two parts: an evaporation section and a condensation section. The evaporation section receives solar radiation, and the condensation section is connected to the heat collector tube. The length ratio of the evaporation section to the condensation section is very large, and the solar energy absorbed by the heat pipe only passes through the header belt connected to one end of the heat pipe. Go, the overall temperature of the heat pipe is very high, and the heat loss with the external environment increases. When the heat pipe is working normally, the water production of the collector is only guaranteed by a condensation section of the heat pipe.

At present, the heat pipes used in heat pipe solar flat panel collectors are one section of evaporation and one section of condensation, and there is no guarantee that the collector can work normally under various inclination angles.

Utility model content

In order to overcome the disadvantages and deficiencies in the prior art, a heat pipe type solar panel heat collector is provided.

The utility model adopts the following technical solutions:

A heat pipe type solar panel heat collector, comprising an upper circulation header, a lower circulation header and heat pipes arranged between the upper and lower circulation headers, the upper and lower ends of the heat pipes are vertically inserted into the upper and lower circulation headers respectively , the insertion part is a condensing section, the heat pipe has two condensing sections, and an evaporating section is between the condensing sections.

The inner wall of the heat pipe is a liquid-absorbing core structure.

The outer wall of the heat pipe is provided with a fin structure.

The beneficial effects of the utility model:

The utility model has the advantages of simple structure, high thermal efficiency, large water production, reduced heat loss, convenient installation and low maintenance cost.

Description of drawings

Fig. 1 is the working process schematic diagram of the present utility model;

Fig. 2 is the structural representation of the utility model;

Fig. 3 is the connection diagram of heat pipe and fin structure in the utility model;

Fig. 4 is a schematic diagram of the connection between the heat pipe and the upper and lower circulation headers in Fig. 2 .

The figure shows:

1-upper circulation header, 2-lower circulation header, 3-heat pipe, 4-fin structure, 5-liquid suction core structure, a1-upper condensation section, a2-lower condensation section, b-evaporation section, Q21- heat.

Detailed ways

The utility model will be described in further detail below in conjunction with the embodiments and accompanying drawings, but the implementation of the utility model is not limited thereto.

Example

As shown in Figure 2, a kind of heat pipe type solar panel heat collector comprises an upper circulation header 1, a lower circulation header 2 and a heat pipe 3 arranged between the upper and lower circulation headers, the upper and lower ends of the heat pipes The upper and lower circulation headers are vertically inserted respectively, the inserted part is a condensation section, the heat pipe has two condensation sections, and the evaporation section b is between the two condensation sections. The utility model is provided with two condensing sections, which increases the condensing area.

As shown in Figure 3, the inner wall of the heat pipe is a liquid-absorbing core structure 5, and the outer wall of the heat pipe is provided with a fin structure 4, and the fin structure is arranged to increase the solar radiation area and increase the heat absorbed by the heat pipe. The sheet structures are connected by welding, the process is simple, and the heat transfer resistance is small. The liquid-absorbing core structure provides sufficient driving force for the adsorption and flow of the heat pipe working medium, so that the inclination angle of the collector is not limited. .

As shown in Figure 4, the condensing sections at the upper and lower ends of the heat pipe are vertically inserted into the upper and lower circulation headers respectively, so that the working liquid is in direct contact with the heat pipe and the heat transfer capacity is improved. Since the outer wall of the heat pipe may be corroded by the working liquid during long-term operation, it is necessary to protect the condensation section of the heat pipe, and coat a thin protective layer on the wall by electroplating, electroless plating, etc.

As shown in Figure 1, the working process of the utility model is: the two ends of the heat pipe are condensation sections, and the evaporation section b is between the two condensation sections. The evaporation section absorbs solar radiation, and the liquid working medium evaporates into gas and flows to the condensation section at the upper end of the heat pipe. a1, the lower end condensation section a2, in the condensation section, due to the heat Q21 taken away by the upper and lower circulation headers, the gas working medium condenses into a liquid, and the liquid flows back to the evaporation section under the action of the capillary force provided by the liquid-absorbing core structure, compared with the traditional heat pipe , The utility model has two condensing sections, which increases the condensing area. The structure of the liquid-absorbing core must have good capillary adsorption force to ensure that the liquid working medium is adsorbed on the liquid-absorbing core and returns to the evaporation section.

The above-mentioned embodiment is a preferred implementation mode of the present utility model, but the implementation mode of the present utility model is not limited by the described embodiment, and any other changes, modifications, modifications, Substitution, combination, and simplification should all be equivalent replacement methods, and are all included in the protection scope of the present utility model.

Claims (3)

1. a heat pipe type solar flat plate collector, it is characterized in that, comprise cocycle collector, lower circulation collector and be arranged on the heat pipe between upper and lower circulation collector, the upper and lower end of described heat pipe is the upper and lower circulation collector of vertical insertion respectively, described insertion portion is condensation segment, described heat pipe has two sections of condensation segments, is evaporator section between described condensation segment.

2. a kind of heat pipe type solar flat plate collector according to claim 1, is characterized in that, described heat pipe inner wall is liquid sucting core structure.

3. a kind of heat pipe type solar flat plate collector according to claim 1, is characterized in that, described heat pipe outer wall is provided with fin structure.

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