Passive solar double-stage phase-change heat storage type heating device

Abstract

The invention discloses a passive solar double-stage phase-change heat storage type heating device. The device is composed of a solar heat collector (1) and a radiator (2), wherein the solar heat collector (1) is mounted through a bracket (7), the solar heat collector (1) and the radiator (2) are connected through a water supply pipe (11) and a water return pipe (12), the device is characterized in that a high-melting-point phase-change material (9) fills the portion outside the water supply pipe (11) at the upper half part of the radiator (2), and a low-melting-point phase-change material (10) fills the portion outside the water return pipe (12) at the lower half part of the radiator (2). Compared with the prior art, the heating device absorbs the solar energy through the solar heat collector in the daytime, the surplus heat is stored in the phase-change material during heating, the heat is released at night for the indoor heating, so that while the room temperature of day and night is kept constant, the utilization efficiency of the solar energy is improved, the problem that solar energy is intermittent and unstable is solved, and the purpose of fully and comprehensively utilizing the solar energy is achieved.

Description

technical field [0001] The invention relates to a heating device, in particular to a passive solar energy heating device with two-stage phase-change energy storage. Background technique [0002] At present, in rural areas of our country, coal is generally used for heating in winter, which not only causes a large amount of primary energy consumption, but also has serious environmental pollution problems. Solar energy is the most common renewable and clean energy. It can be used as a heat source in heating systems, which can reduce the consumption of primary energy and is conducive to the development of low-carbon buildings and green buildings. Therefore, in order to respond to energy saving and emission reduction and realize clean heating, passive solar heating technology has great development potential. [0003] Phase change energy storage technology has the advantages of large energy storage, small temperature fluctuation, limited indoor space occupation, and stable perfor...

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Problems solved by technology

[0005] At present, solar heating systems are divided into active and passive systems in terms of heat collection. Among them, the passive system is mostly solar-air system, which has a relatively simple structure and low investment, but the utilization efficiency of solar radiant heat is low. The heat capacity is low, and the heating capacity is limited

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