Volumetric solar thermal collector with composite curve surface

Abstract

The invention discloses a volumetric solar thermal collector with a composite curve surface, and belongs to the field of solar heat collection. The volumetric solar thermal collector is characterized by comprising a heat collecting surface and a heat-insulating surface; an outer shell and an inner shell of the heat collecting surface are both curve surfaces or composite curve surfaces; the outer shell of the heat collecting surface is made of a transparent material; the inner shell is made of a heat-conducting material or transparent material; a certain distance is kept between the outer shell and the inner shell; a sealed cavity is formed between the outer shell and the inner shell; the heat-insulating surface is composed of a waterproof material and a heat-insulating material; the waterproof material is inside, and the heat-insulating material is outside; the inner shell and the outer shell are tightly connected with the heat-insulating surface; a sealed space is formed between the heat-insulating surface and the heat collecting surface; the fluid is heated in the sealed space; an insulating pad can be arranged between the inner shell and the outer shell and connected with the outer shell, so that the inner shell and the outer shell form a whole body; a detachable bottom cover of the heat-insulating surface is arranged at the bottom part of the heat-insulating surface; two pipes pass through the bottom cover of the heat-insulating surface and go into the heat collector; an air release valve and a pressure release valve are arranged in the heat collector, and a bracket and a reflector can be arranged.

Description

Technical field [0001] The invention belongs to the field of solar heat collection, and relates to a solar heat collector composed of multiple curved surfaces. Background technique [0002] As an inexhaustible green and clean energy, solar energy has attracted more and more attention. As the most important device for solar thermal utilization, solar collectors have made considerable progress. However, the existing flat plate collectors have low heat collection efficiency and are easy to freeze and crack; the existing evacuated tube collectors are complex in structure and process, basically in the form of blind tubes, and most of them need to be disassembled and drained, and the problem of scale deposition cleaning is difficult to solve. The above two types of heat collectors do not have the heat storage function, and an additional hot water storage tank must be installed. The most common vacuum tube solar water heater now has a large area due to the separation of heat collection...

AI Technical Summary

Problems solved by technology

However, the existing flat plate collectors have low heat collection efficiency and are prone to freezing and cracking; the existing vacuum tube collectors have complex structures and processes, basically in the form of blind tubes, and most of them need to be dismantled and drained, and the problem of scale deposition cleaning is difficult to solve

The above two types of heat collectors do not have the function of heat storage, and an additional hot water storage tank must be installed. Now the most common vacuum tube solar water heater occupies a large area due to the separation of heat collection and heat storage.

The existing volumetric heat collectors with heat storage function often have a small heat collection area and low heat collection efficiency

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