Efficient vacuum heat pipe heat collection method

Abstract

The invention relates to the technical field of photovoltaic heat energy, and discloses an efficient vacuum heat pipe heat collection method. The efficient vacuum heat pipe heat collection method involves a heat preservation layer, a union pipe is fixedly connected into the heat preservation layer, a heat pipe is fixedly connected into the union pipe, a fixing ring is fixedly connected to the upper portion of the heat pipe, and a vacuum glass pipe is fixedly connected to the outer side of the bottom of the fixing ring. Through the arrangement of an impeller, an auger and a through hole, when a heat collection energy pipe is illuminated by the sun, a heat transfer medium in the heat pipe is heated, evaporated and vaporized, steam rises and blows to the impeller, the rotating impeller drives the auger to rotate, the heat transfer medium at the bottom is pumped to the upper portion of an upper water barrel, and the heat transfer medium is sprayed out from the through hole under the action of liquid pressure, the heat transfer medium is sprayed to the sunny side of the heat pipe, namely the highest-temperature part of the heat pipe, evaporation and vaporization of the heat transfer medium can be accelerated, the heated surface area of the heat transfer medium can be increased, evaporation and vaporization of the heat transfer medium are further accelerated, and the heating efficiency of a vacuum heat pipe heat collector is greatly improved.

Description

technical field [0001] The invention relates to the technical field of photovoltaic thermal energy, in particular to a high-efficiency vacuum heat pipe heat collection method. Background technique [0002] The heat pipe vacuum tube solar collector is a kind of water-passing solar collector that uses the heat pipe vacuum heat collector tube to absorb solar radiation energy, uses inorganic heat transfer medium as the heat transfer medium, and then heats the water in the header pipe or the water tank. device. The basic working principle of the heat pipe vacuum tube solar collector is as follows: sunlight passes through the heat collecting tube and irradiates on the selective absorption film of the inner tube of the heat collecting tube. To the built-in heat pipe, quickly heat and vaporize the working medium in the evaporation section of the heat pipe, and the vaporized substance rises to the condensation section of the heat pipe, so that the temperature of the condensation sec...

AI Technical Summary

Problems solved by technology

[0003] However, there are still some deficiencies in the existing heat pipe vacuum tube collectors in actual use: First, because the existing solar heat pipe vacuum tube collectors all use liquid inorganic heat transfer fluid, and there is an inclination angle when the collectors are installed. , all heat transfer working fluids are often concentrated at the lower end of the heat pipe, which not only results in a small evaporation surface area of ​​the heat transfer working fluid, which is not conducive to rapid heat absorption and evaporation, but also has a large contact area between the liquid working fluid and the backside of the heat pipe, and contacts with the sunny side of the heat pipe. The area is small, and when the solar tube collects heat, the sunny side is generally heated first. After the temperature of the sunny side rises, the backside is also heated by heat conduction before it can be heated to condensate, resulting in low heat transfer efficiency and high heat dissipation. The efficiency is low; secondly, when the solar tube is in use, since the heat transfer between the heat pipe and the heat collecting energy tube is through the aluminum wing, after the light is over, the heat accumulated inside the heat pipe will also be dissipated through the aluminum wing in contact with it, resulting in , the aluminum wing will speed up the cooling of the heat pipe, resulting in rapid heat loss of the heat pipe, reducing the heating time of the heat pipe after no light, and reducing its working efficiency

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