A heat-absorbing plate core of a solar flat heat collector and a solar flat heat collector

Abstract

The invention relates to the field of solar water heaters, in particular to a heat absorbing plate core of a solar flat heat collector and the solar flat heat collector. The heat absorbing plate core of the solar flat heat collector comprises two collecting pipes and a drain pipe, wherein the drain pipe is arranged between the two collecting pipes, and is respectively communicated with the two collecting pipes; the collecting pipes and the drain pipe are manufactured by high-temperature resistant heat conducting plastic materials; and the drain pipe consists of multiple independent hollow pipes, or is a plastic plate provided with multiple holes. As the plate core of the flat heat collector is manufactured by the high-temperature resistant heat conducting plastic material, the plate core cannot be corroded, and is strong in incrustation resistance. More than one half of the mass of the all-plastic flat heat collector can be reduced; the transportation is convenient; and the price is low. A working medium flows into the heat collector through the collecting pipe; heat is absorbed through the plastic plate core; then, the heated working medium is gathered in the other collecting pipe for transfer out; and solar radiation energy is quickly absorbed by using a special plastic pipeline.

Description

technical field [0001] The invention relates to the field of solar water heaters, in particular to a heat-absorbing plate core of a solar flat heat collector and the solar flat heat collector. Background technique [0002] Traditional flat-plate collectors usually consist of a metal heat-absorbing plate core, profile frame, glass cover plate, thermal insulation cotton and back plate. The heat-absorbing plate core is the core of the flat-plate collector. The heat-absorbing plate core of the flat-plate collector is mainly composed of two parts: metal pipeline and metal heat-absorbing coating. The metal heat-absorbing coating is connected to the metal pipeline by welding. Metal pipelines are mainly composed of headers, row pipes and external fittings. The heat-absorbing plate core absorbs solar radiation through the metal heat-absorbing coating and converts it into heat energy. The heat energy is absorbed by the heat transfer working medium flowing through the header, and then...

AI Technical Summary

Problems solved by technology

[0003] Because the traditional flat plate collector is a metal pipeline, it is easy to scale and has poor corrosion resistance. Long-term corrosion will cause the pipeline to become thinner, and even cause water leakage in the pipeline.

If the collector enters water or generates relatively serious water mist, the metal coating will be corroded quickly, seriously affecting the heat absorption performance of the collector

[0004] Due to the high density of metal and glass, the weight of flat plate collectors is usually very large, which makes transportation and installation inconvenient

and the price is high

[0005] Moreover, the thermal insulation cotton of the flat collector will produce volatile substances at high temperature inside the collector, which will affect the heat absorption performance of the collector.

[0006] Based on the above description, there is an urgent need for a heat-absorbing plate core of a solar flat panel collector to solve the problems of easy scaling, poor corrosion resistance, heavy weight and high price of the metal flat panel collector in the prior art

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