Directly-heated solar water heater

Abstract

The invention relates to a directly-heated solar water heater comprising an insulated header, a heat-collecting device and a heat-exchanging device, wherein the heat-collecting part is used for absorbing solar radiation and converting same into heat energy and transferring the heat energy to the insulated header, the insulated header is used for collecting heat generated by the heat-collecting device, and the heat-exchanging device is used for transferring the heat of a high-temperature medium in the insulated header to water so as to heat the water. The directly-heated solar water heater can operate under pressure, solves the problems of pipe bombing of the ordinary vacuum pipe solar heat collector and system failures caused by the pipe bombing and also solves the problems of small heat-collecting area and low heat-collecting efficiency of the pressure solar energy of the U-shaped pipe and the pressure solar energy of the heat pipe. The directly-heated solar water heater does not generate water scale, is frost-proof, has long service life and high heat-collecting efficiency and belongs to the field of solar manufacture.

Description

technical field [0001] Direct heating solar water heater, the present invention is composed of heat preservation header box, heat collecting device and heat exchange device; the heat collecting device absorbs solar radiation and converts it into heat, and then stores it in the heat preservation header box. The high-temperature medium in the box heats water for people to use through a heat exchange device; it belongs to the field of solar energy manufacturing. Background technique [0002] Solar energy, as a new type of regenerated clean energy, has been widely used in people's daily life. Solar water heaters can bring us a lot of hot water regardless of spring, summer, autumn and winter, which is convenient for people's daily life and saves energy; Heater, because of its high heat collection efficiency and low cost, has become the mainstream product in my country's solar market. However, the biggest disadvantage of existing vacuum tube collectors is that most of them cannot o...

AI Technical Summary

Problems solved by technology

[0003] The object of the present invention is to provide a direct-heating solar water heater. The collector of the present invention solves the drawbacks of conventional vacuum tube collectors that cannot operate under pressure, as well as the failure of common vacuum tubes due to the sudden inflow of cold water and uneven heating. The problem of paralysis of the entire system caused by the tube explosion, at the same time, the heat energy converted by the heat collecting layer can be quickly and timely transferred to the metal heat pipe to reduce heat loss, improve the heat collection efficiency of the heat collection device, and the heat collection device in the heat collection device The heating medium adopts a heat conduction medium with a freezing point of -68°C and a boiling point of 420°C, and a viscosity of 0.016. This medium can protect the pipeline. Therefore, the heat collection efficiency of the heat collector is also increased; the invention has the advantages of antifreeze, pressure-bearing operation, no scaling, long service life, low cost and high stability