JPS5937415B2 - solar heat collector - Google Patents

Description

[Detailed description of the invention] The present invention relates to a solar heat collector using a heat panel.

A heat panel is a heat pipe that is made into a panel.
When a working fluid such as water is put in and one end (evaporation part) of the panel is heated, the working fluid evaporates and rapidly moves to the other end (condensation part), releases latent heat, and becomes liquid and refluxes. Solar heat collectors that use heat panels operate repeatedly, and the solar heat received on the evaporator and the entire surface of the panel evaporates the working fluid and moves it to the condenser. The pipes through which the medium flows are made to correspond to each other, and the latent heat released by the working fluid that moves to the condensing section and condenses is given to the heat medium flowing through the pipes.

What is shown in FIGS. 1 and 2 is a conventional solar heat collector of this type.

This is done by arranging circular convection pipes 9 in parallel, connecting their upper ends with a pipe to form an evaporation part 4, and connecting their upper ends with a pipe to form a condensation part 3. The inside of the passage 9, 3.4 is evacuated and a working fluid 7 is put therein, and a pipe 1 through which a heat medium flows is inserted into the condensing part 3.

This solar heat collector is used, for example, as shown in FIG. 2, by being placed in a heat insulating case 6 made of a heat insulating material whose upper surface is covered with a transparent plate 5.

This solar heat collector operates as described above, and the working fluid 7 condensed in the condensing section 3 drips from the outer surface of the pipe 1 or flows down the inner surface of the condensing section 3 and reaches the bottom plate 1.
The solar heat received by the panel's top plate 2 is thermally conducted to the bottom plate 10. Only then did it contribute to the heating of the working fluid 7.

Therefore, thermal conduction resistance has a large effect on the transfer of heat from the top plate 2 to the bottom plate 10, and even if the top plate 2 receives a lot of solar heat, only the temperature of the top plate 2 will rise significantly and it will remain in the atmosphere. The disadvantage was that a large amount of heat was released.

Therefore, in the present invention, as shown in FIGS. 3 and 4, the ceiling surface of the advection pipe line 9 is formed into a flat surface, and the pipe 1 for flowing the heat medium into the condensing section 3 is inserted through the pipe. A wick 8 is wound and attached to the wick 8 and the wick 8 is attached to the advection pipe 9.
It is connected to the ceiling surface of.

In the actual case shown in FIGS. 3 and 4, - gutter-like recesses are arranged in parallel on the rectangular bottom plate 10, and gutter-like recesses are formed to connect the lower and upper ends of the gutter-like recesses, respectively. A concave portion is provided, and the gutter-like concave portion of the bottom plate 10 is replaced with the top plate 2 made of a flat plate.
The advection pipe 9 is a space consisting of gutter-like recesses arranged in parallel
and a gutter-like recess connecting the lower ends is an evaporation part 4,
A condensing portion 3 is formed by a gutter-like recess that connects the upper ends.

A pipe 1 through which a heat medium flows is inserted through the condensing section 3, and a wick 8 is wound around and attached to the pipe 1, and the wick 8 is connected to the back surface of the top plate 2.

Due to the diagonal structure, the working fluid 7, which releases latent heat to the heat medium flowing through the pipe 4 and condenses, is transmitted to the ceiling surface of the advection pipe line 9 due to the capillary action of the wick 8, and most of it is condensed on the ceiling surface. Flows down to section 4.

The top plate 2 is made of a flat plate. That is, since the ceiling surface of the advection conduit 9 is made of a flat plate, the working fluid 7 flowing on the upper surface plate 2 does not easily flow down to the lower surface plate 2 side, and flows down the upper surface plate 2 over a long range toward the condensing section 4. do.

The working fluid 7 thus condensed in the condensing section 4 flows down the ceiling surface of the advection pipe line 9 one after another.

During this time, heat is taken from the top plate 2 heated by the sun and the top plate 2 is preheated.

Part of the preheated heat that has absorbed the heat from the upper plate flows onto the lower plate 10 on the advection pipe 9, or after flowing down to the evaporator 4, falls onto the lower plate 10 and is transferred from the upper plate 2 to the lower plate 10. It is evaporated again by the heat conducted to the advection pipe 9 to the condensing section 3, and the above operation is repeated.

As described above, according to the solar heat collector of the present invention, the condensate flows down the advection pipe along the back surface of the top plate 2 toward the evaporation section, so that it does not overheat the top plate and is lost to the atmosphere. Thermal efficiency is good because the received light heat can be used to preheat the condensed working fluid.

[Brief explanation of drawings]

1 and 2 are views showing a conventional example, where FIG. 1 is a partially sectional perspective view and FIG. 2 is a sectional view. 3 and 4 are diagrams showing one embodiment of the present invention, and FIG.
The figure is a partially sectional perspective view, and FIG. 4 is a sectional view.

Claims (1)

[Claims] 1 The working fluid is evaporated by the solar heat received on the evaporation section and the entire surface of the panel and moved to the condensation section.The condensation section is also connected to a pipe through which other heat medium such as water or alcohol flows, and the working fluid is moved to the condensation section. In a solar heat collector that applies the latent heat released by the condensing working fluid to the heat medium flowing in the pipe, the ceiling surface of the advection pipe is formed flat, and a pipe for flowing the heat medium into the condensation section is inserted correspondingly, and the pipe A solar heat collector comprising a wick wound around and attached to the wick, and the wick connected to the ceiling surface of a convection pipe connecting an evaporation section and a condensation section.