Vacuum-tube sleeve combined dual-purpose solar heater

Abstract

The present invention discloses a vacuum-tube sleeve combined dual-purpose solar heater, and belongs to the technical field of solar energy application. The solar heater comprises a shell, an inlet tube, an outlet tube, an insulating mechanism and a plurality of heat collecting components, wherein the exteriors of the plurality of heat collecting components are connected with the shell and the interiors of the plurality of heat collecting components are connected in series in turn; the inlet tube is connected with an inlet of the heat collecting component at the head end; the outlet tube is connected with an outlet of the heat collecting component at the tail end; and the insulating mechanism is fixedly arranged inside the shell and in contact with the inlet tube, the outlet tube, and the plurality of heat collecting components. A pipeline through which the heated working medium flows is completely sealed and is pressure resistant, so the heated working medium can be water or air, and the high-temperature air or high-temperature water is obtained. The vacuum-tube sleeve combined dual-purpose solar heater has the advantages of simple structure, safe and reliable operation, and high and stable thermal efficiency of the system. The temperature of the air or steam at the outlet can reach 200 DEG C.

Description

technical field [0001] The invention relates to a device in the technical field of solar energy application, in particular to a vacuum tube casing combined dual-purpose solar heater. Background technique [0002] The limitation of conventional energy resources and the increase of environmental pressure have made many countries in the world re-strengthen their support for the development of new energy and renewable energy technologies. Solar energy is a clean, environmentally friendly, efficient and inexhaustible new energy, so The governments of all countries regard the utilization of solar energy resources as an important content of the national sustainable development strategy. At present, in the utilization of solar heat, solar water heaters have formed an industry and have been widely popularized. At present, almost all solar water heaters used by families, enterprises and institutions in my country to obtain daily hot water are glass vacuum tube solar water heaters. I...

AI Technical Summary

Problems solved by technology

In addition, there is a metal tube-sheet type flat plate collector with good pressure resistance, but because the plate glass is used for lighting and heat preservation on the plate heat collector, the heat preservation performance is poor, and the thermal efficiency is not high. The water temperature does not meet the requirements

The current various water heaters can only provide hot water with a temperature of about tens of degrees for daily life, and cannot provide high-temperature air or water vapor with a water temperature of more than 100 degrees required by industry.

[0003] After searching the existing relevant technical documents, it is found that the Chinese patent document number CN2540598 records a "solar air and hot water dual-purpose heater", which directly adds another set of solar water heaters on the basis of the existing glass vacuum tube solar water heaters. The air circulation pipeline controls the switching of the working fluid through the valve. The temperature of the water or air at the outlet of this system is not high, which belongs to normal temperature heating; Chinese patent document number CN1434255 records a "new glass vacuum heat pipe solar water heater", which The technology uses heat pipes, and fins are added to the outside of the tubes to enhance the heat transfer of heat transfer heat pipes and glass heat transfer pipes. Due to the limited number of fins and the gap between the glass tubes and fins, the heat transfer heat pipes and glass heat transfer tubes The heat transfer efficiency is not high; Chinese Patent Document No. CN1443996 records a "vacuum tube metal tube combined solar heat collector element". This technology inserts a heat pipe into the inner cavity of a glass vacuum tube, and fills the space between the vacuum tube and the heat pipe with solid powder for heat conduction. Although this type solves the problem of pressure resistance and tube explosion, there are gaps between the filled solid powder and no fins for heat conduction, resulting in poor heat transfer effect

The core of the above technologies is to solve the problem of low heat transfer efficiency of the heat transfer medium between the vacuum tube and the heat transfer heat pipe, but the effect is not ideal

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