A solar water heater based on parabolic trough concentrating heat

Abstract

The invention discloses a solar water heater provided with parabolic troughs and capable of gathering light and collecting heat. The solar water heater is characterized by mainly comprising an exhausting hole, a heat insulating water tank shell, a water drain pipe, a cold water pipe, a water tank end cover, a hot water pipe, a parabolic trough reflector, a full-glass vacuum heat collecting pipe, supporting legs, a heat collecting pipe focusing support member, a constant-pressure valve, an upper circulating pipe, a cold water tank, a hot water tank, a phase-change heat storage layer, a silica rubber leather cushion, a metal sealing cover, a glass delivery tube, a silica rubber leather sleeve, a lower circulating pipe, a horizontal partition and a reflector rib plate, wherein the heat insulating water tank shell comprises a water tank inner shell and a water tank outer shell; the water tank inner shell is a water tank heat insulating layer and clings to the inner side surface of the water tank outer shell. In the water heater, a parabolic trough type heat collector is used for replacing a plurality of arranged vacuum tubes in the market, so the cost is greatly lowered, the heat collection efficiency of the water heater is also improved, accumulation of hot water in the vacuum tubes is reduced, and convenience is provided for maintenance and descaling of vacuum tubes.

Description

technical field [0001] The invention relates to the technical field of solar energy utilization, in particular to a solar water heater based on a parabolic trough heat collector, in particular to a hot water device using a parabolic trough heat collector to provide domestic hot water for users. Background technique [0002] Traditional energy is increasingly scarce, and it has become the consensus of countries all over the world to accelerate the development of renewable energy. Solar energy, as a type of renewable energy, has multiple uses in people's daily needs, such as power generation, heating, and hot water supply. But at present, only solar water heaters can be supplied to the market in large quantities in the form of commodities. Solar water heaters can realize the conversion from solar energy to thermal energy, and improve hot water or heat sources for users' production and life. Generally, a solar water heater consists of a heat collector, an insulated water stora...

AI Technical Summary

Problems solved by technology

Traditional vacuum tube solar water heaters need to be arranged with more vacuum tubes to increase the heat collecting area

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