Thermochemical Adsorption Heat Storage Device

Abstract

The invention provides a thermochemical adsorption heat storage device, comprising a heat exchanger (1), an adsorber (7) and a reservoir (18); the heat exchanger (1) is connected with the adsorber (7)through flanges (4); the top part of the heat exchanger (1) is connected with the reservoir (18) through a liquid pumping mechanism; and the side part of the heat exchanger (1) is connected with thereservoir (18) through a liquid discharge mechanism. The thermochemical adsorption heat storage device provided by the invention is high in heat storage density, small in heat loss and high in temperature rise in a heat energy releasing process, and is suitable for long-term heat storage; and the thermochemical adsorption heat storage device provided by the invention is safe and reliable, and is capable of employing electric energy and solar energy heat storage, so that the flexibility of an architecture energy resource system is effectively increased, and energy conservation and emission reduction are realized.

Description

technical field [0001] The invention relates to the field of heat storage devices, in particular to a thermochemical adsorption heat storage device. Background technique [0002] As the world's energy consumption increases and fossil fuels are depleted, sustainable development is gaining more and more attention. Making better use of existing energy sources and switching from existing energy sources to renewable energy sources are two effective ways to save energy and reduce emissions. In order to cope with the differences in time, space and power between the energy supply side and the demand side, and to improve the intermittent and unstable problems of renewable energy such as solar energy, energy storage technology provides an ideal solution. Compared with the storage of mechanical energy and electrical energy, thermal energy storage technology has the advantages of low cost, large capacity, and is suitable for green buildings and solar collectors. Therefore, thermal ene...

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Problems solved by technology

[0004] After searching the existing technology, the patent document application number is CN201710324263.1, and the announcement number is CN107062973A, which discloses a phase change heat storage heating unit, which uses a heating tube to heat the phase change material placed in the heat storage tank, through Heat transfer oil and phase change material are used for heat exchange. This patent document uses phase change latent heat storage technology, which has the disadvantages of low heat storage density, large heat loss during heat storage, and is not suitable for long-term heat storage. In addition, the heating tube of this patent document Placed in the heat transfer oil and heat storage tank, it is not easy to maintain if a fault occurs; another patent document application number is CN201410191447.1, and the announcement number is CN104006540A discloses a thermochemical energy storage test device and test method. This patent document uses solar energy The heat collector heats the calcium oxide / calcium hydroxide in the energy storage reactor, and the calcium hydroxide is decomposed into calcium oxide and water, and the heat energy is converted into chemical energy for storage. The disadvantage of this patent document is that the decomposition temperature of the reactant calcium hydroxide is too high. High, if only the solar collector is used as the heat source, the reactants cannot reach the decomposition temperature when the solar radiation intensity is low. In addition, in order to achieve long-term heat storage, it is necessary to separate calcium oxide from water, so the reactor and condenser / Vacuum valves are installed between the evaporators. In order to reduce the flow resistance of water vapor, a valve with a large diameter needs to be selected, which increases the cost of the device in this patent document and also affects the reliability and ease of operation.

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