Passive-type double-flow-passage solar water boiler

Abstract

The invention discloses a passive-type double-flow-passage solar water boiler which comprises a solar thermal collector, a water boiling tank and a thermal accumulator mounted in the water boiling tank. The solar thermal collector is composed of a full-vacuum glass thermal collecting pipe, a metal-bar-shaped thermal pipe, thermal conduction aluminum foil and a steam pocket. The vaporization end ofthe metal-bar-shaped thermal pipe and an aluminum finned pipe are inserted into the full-vacuum glass thermal collecting pipe jointly, and the condensation end of the thermal pipe is inserted into the cylindrical steam pocket which communicates with the water boiling tank through a thermal-insulating anti-pressing rubber pipe. The water boiling tank is internally provided with the thermal accumulator which is filled with a paraffin phase-change thermal accumulating material. According to the passive-type double-flow-passage solar water boiler, solar energy is absorbed through the vacuum glassthermal collecting pipe, through the thermal pipe, heat is transferred to the steam pocket quickly, and cold water in the steam pocket is heated; and the cold water in the steam pocket is heated intoa saturated steam state and enters the water boiling tank through the thermal-insulating anti-pressing rubber pipe to be mixed with and heat cold water in the water boiling tank. The passive-type double-flow-passage solar water boiler can operate under the normal pressure, power does not need to be additionally provided, the thermal efficiency is high, and the passive-type double-flow-passage solar water boiler can further be used for boiling fresh water and spraying steam for a long time.

Description

technical field [0001] The invention belongs to the technology in the field of solar heat utilization, and integrates the technologies of solar heat collection, steam heat storage and boiling water supply. Specifically, it provides solar water boiling devices for schools, shopping malls, companies and other places that need large-scale boiling water drinking water devices. Background technique [0002] Solar energy is currently the most ideal new energy technology with the most commercial development value and relatively mature technology. It has the advantages of typical cleanliness, no pollution, huge total radiation power, and inexhaustible use. The development of solar energy Harness and utilization are energy solutions vigorously advocated by governments around the world, and are of great significance for human beings to get out of their own energy and environmental predicaments. [0003] At present, the utilization forms of solar energy include photovoltaic power gene...

AI Technical Summary

Problems solved by technology

[0005] The two types of water boilers have their own advantages and disadvantages. The first type does not require power consumption, has no moving parts (water pumps), and has a simple structure, but the water temperature is difficult to control. Hot water is often provided without boiling, and the water quality of tap water is also poor.

The second type of water quality is guaranteed, but it requires power consumption, a heat exchanger and a water pump are required, the structure is complex, and the cost is high

Moreover, due to the forced convection cycle heat exchange, it is impossible for pure water to reach the temperature of boiling water, generally it can only reach 60 or 70 degrees.

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