Non-concentric casing tube phase-change solar heat-collector

Abstract

The present invention relates to a non-concentrical cannula phase-transition solar heat collector. The solar heat collector is characterized in that the solar heat collector comprises a set of cannula structure fixed by two internally tangent circular pipes with different diameters; two ends of an internal cannula are sealed by welding; metal heat pipes penetrate the pipe wall of an external cannula and are welded at intervals on the internal cannula axially; each metal heat pipe and the internal cannula form a through structure which is isolated from the outside; a water inlet and a water outlet are formed on the outer cannula; and a heating media working fluid is arranged in the communicated structure formed by the metal heat pipe and the internal cannula. The solar heat collector has the advantages that the collector is simple and reliable in structure, light in weight, high in pressure bearing capacity, high in selective absorbability, low in material cost and long in service life. With the special structural design, the product not only has good low temperature performance, but also has excellent antifreeze performance. The collector is resistant to a low temperature of 40 DEG.C below zero. Additionally, the product integrates heat absorption, transmission and heat discharge, and is exceedingly high in integral heat efficiency, fast in start speed, good in reliability, and low in application cost. The collector can be used for externally-hung domestic solar water heaters, and can be further used for hot water engineering, solar energy-assisted air-conditioners and solar energy heating and heat-collecting devices, etc. The solar heat collector is a breakthrough for solar energy recycling devices.

Description

Technical field: [0001] The invention relates to a phase-change solar heat collector with a different center casing, which belongs to the field of solar energy utilization. Background technique: [0002] In the past 10 years, China's economy has developed rapidly, people's living standards have been continuously improved, and the demand for energy has also increased accordingly. Primary energy consumption includes fossil fuels such as coal, oil and natural gas. Due to the limited oil reserves in our country, nearly 50% of the crude oil currently depends on imports. In addition to the new round of oil crisis, coal is still the main source of fuel and power in my country. The environmental problems caused by coal burning have become a must in my country's sustainable development strategy. Treat the problem. Recently, the Chinese government has paid great attention to energy resources and environmental issues, and actively adopted countermeasures to encourage the development o...

AI Technical Summary

Problems solved by technology

The disadvantages of these low-end solar water heaters, which use vacuum glass plates / tubes to directly discharge water, are poor thermal insulation performance, many interfaces are prone to water leakage, poor resistance to low temperature, fragile and easy to burst, large in size, heavy in weight, and low in thermal efficiency.

Even the current domestic high-end vacuum glass tube-heat pipe solar water heaters have low overall thermal efficiency, high manufacturing costs, and unstable performance.

Due to the design principles and structural defects of existing collectors, the use environment and application fields of solar collectors are greatly limited.

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