Vacuum flat plate heat collector and manufacturing method and equipment thereof

Abstract

The invention discloses a vacuum flat plate heat collector and a manufacturing method and equipment thereof, and belongs to the field of solar energy application. The popularization of a vacuum pipe heat collector enables a flat plate heat collector to be marginalized, so that people know the importance of vacuum heat preservation in solar low-temperature heat collection application. A blow-up type plate core is arranged in the middle of a vacuum glass flat box, supporting columns are arranged between the plate core and the glass box, a heat absorption coating is manufactured on the front faceof the plate core, an inlet pipe nozzle and an outlet pipe nozzle are adjacent on the center line of the back face of the plate core and are vertically led out of a round hole of the same glass backplate, and the problems of heat stress and sealing are well solved. The heat collector in which the ultra-thin plate core is arranged in the vacuum glass box with the homogeneous integrated supportingcolumns is small in heat storage amount, fast in starting and high in heat collection efficiency, and is combined with a building and mounted on a steel structure to form a solar wall which saves energy and generates energy, and the building energy consumption can be effectively reduced. The vacuum flat plate heat collector is combined with a heat pump or a medium-temperature heat collector to produce steam as solar industrial energy, so that the device has a wider application prospect.

Description

[0001] Field [0002] The invention belongs to the field of solar energy application Background technique [0003] In the 1970s and 1980s, under the background of the energy crisis, flat plate collectors had once been brilliant, but because there is only one layer of glass on the core of the plate collector, the thermal insulation effect is poor. It is not easy to use in winter, and it is gradually replaced by vacuum tube collectors with better heat preservation. It can be seen that the key to the application technology of solar low temperature collectors lies in heat preservation. The feature of vacuum tube collectors is vacuum heat insulation, which is better in heat preservation. The output temperature is high, so it has been widely used, and its development has led to the marginalization of flat plate collectors. However, vacuum tube collectors also have shortcomings. Whether water or heat transfer oil is used as the medium, the heat reserve is too large, the start is slo...

AI Technical Summary

Problems solved by technology

[0003] In the 1970s and 1980s, under the background of the energy crisis, flat plate collectors had once been brilliant, but because there is only one layer of glass on the core of the plate collector, the thermal insulation effect is poor. It is not easy to use in winter, and it is gradually replaced by vacuum tube collectors with better heat preservation. It can be seen that the key to the application technology of solar low temperature collectors lies in heat preservation. The feature of vacuum tube collectors is vacuum heat insulation, which is better in heat preservation. The output temperature is high, so it has been widely popularized and applied, and its development has led to the marginalization of flat plate collectors

However, vacuum tube collectors also have shortcomings. Whether water or heat transfer oil is used as the medium, the heat reserve is too large, the start is slow, and after the sun is overcast, a large amount of heat energy stored in the tube cannot be used, thereby reducing efficiency. Although There are many ways to reduce the heat storage, but it greatly increases the manufacturing cost; another problem is that the heat collecting area of ​​the vacuum tube is too small, and the heat energy obtained by each vacuum tube is too little. If there is enough space for installation, a part of the sun will fall out of the gap, and the resources cannot be fully utilized. In addition, it is difficult to integrate the vacuum tube collector with the building. Therefore, innovation is still needed.

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