Open heat-pipe vacuum-tube solar high-temperature pressure-bearing water heater

Abstract

An open heat-pipe vacuum-tube solar high-temperature bearing water heater comprises a CPC light concentration plate, an open heat-pipe vacuum-tube heat-collecting pipe, a vertical header and a frame; the internal pipe surface of the vacuum tube is covered by the absorbing coating of the open heat-pipe vacuum-tube heat-collecting pipe; a conductive medium is filled between the vacuum tube and the heat pipe; the outlet is sealed by a heat-preservation plug, thus avoiding the heat encapsulation problem between the glass and the metal and realizing the weldless connection between the vacuum tube and the metal heat pipe; the outlet of the heat pipe is not sealed and the heat pipe and the vertical header directly compose an open heat pipe system; a condensation pipe in the vertical header is a U-shape or a disc-shape; the outside of the vertical header is sheathed by a vacuum heat-preservation bottle for heat preservation; a plurality of heat-collecting pipes and vertical headers are connected to compose the open heat-pipe vacuum-tube solar high-temperature pressure-bearing water heater; and the open heat-pipe vacuum-tube solar high-temperature pressure-bearing water heater has good heat-preservation effect and high heat efficiency, can provide hot water and high-temperature steam so as to be used by industries and agricultures.

Description

technical field [0001] The invention relates to a water heater in the technical field of solar energy, in particular to an open heat pipe vacuum tube solar high-temperature pressure-bearing water heater. Background technique [0002] With the implementation of laws and regulations on energy conservation and emission reduction and building energy conservation in my country, the market for solar thermal utilization products is huge. Among them, solar water heaters are the most important. However, due to the limitation of heat collection technology, the water temperature of current solar water heaters is basically lower than 80°C, which is in the low temperature application range and can only meet the general needs of residents. In the future, the focus of development in the field of solar thermal conversion will include the development of solar medium-high temperature heat collection and heat storage technology and the demonstration application of industrial and agricultural p...

AI Technical Summary

Problems solved by technology

Limited by the heat collection temperature, the first two types of heat collectors generally use low-temperature water heaters, and due to structural problems, the system cannot bear pressure, has poor stability, and low thermal efficiency

[0005] Chinese patent application number: 02100390.4, the name of the invention is: new glass vacuum heat pipe solar water heater, the invention is to install heat collecting fins on the outer wall of the heat pipe, thereby reducing thermal resistance and improving heat transfer efficiency, but it does not solve the problem between glass and metal Thermal Packaging Issues

In addition, the service life of these types of heat pipes is low, and how to prolong the service life is still a technical bottleneck

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