Modular solar chemical adsorption heat storage and release and temperature-raising system and method

Abstract

The invention discloses a modular solar chemical adsorption heat storage and release and temperature-raising system. The system comprises a heat collecting and energy storage device, a condenser, a liquid storage device, an evaporator, a heat exchange unit and an adsorbate, wherein a heat exchange coiled pipe in a condensation pipe is connected with a low-temperature fluid source when the system collects and stores heat; an evaporator heat exchange coiled pipe in the evaporator is connected with a hot fluid source when the system releases heat; the adsorbate can flow in the heat collecting and energy storage device, the condenser, the liquid storage device, the evaporator and the heat exchange unit which are connected with one another sequentially; and when the system collects and stores heat, a heat storage module which can be controlled and adopts a tube cylinder structure is arranged in the heat collecting and energy storage device, one end of the heat storage module is closed and the other end of the heat storage module is open / closed, a chemical heat storage material is filled between the inner wall and the outer wall of the tube cylinder, a heat-absorbing coating is coated on the outer wall, and a channel is formed in the center of the tube cylinder. The invention also provides a modular solar chemical adsorption heat storage and release and temperature-raising method. According to the system and the method, trans-regional and seasonal heat storage and release can be realized, and high-temperature heat can be provided by increasing evaporation pressure.

Description

technical field [0001] The invention relates to the technical field of solar energy storage, in particular to a modular solar energy chemical adsorption heat storage and release and temperature raising system and method. Background technique [0002] With the continuous extraction of fossil fuels, the energy problem is becoming more and more severe, and the development of new energy is one of the most effective ways to solve energy and environmental problems. Solar energy is inexhaustible, inexhaustible, clean and non-polluting, but solar energy has the defects of intermittent, dispersed, unstable and low energy density. In order to realize the practical and wide application of solar heat storage technology, it is necessary to develop a Heat storage system with higher collection efficiency, lower cost and higher energy storage efficiency. [0003] The traditional solar heat storage technology uses solar collectors to collect solar energy to heat the water in the water tank ...

AI Technical Summary

Problems solved by technology

Furthermore, the current solar heat storage technology is mainly based on the principle of phase change or sensible heat. This heat storage method will not only lose the amount of heat in the medium and long-term storage process, but also reduce the quality of heat due to the drop in temperature.

[0004] In addition, in the current medium- and long-term solar energy storage system based on the principle of chemical heat storage, after the heat storage is completed, the heat collector is mostly in an idle state. Due to the low ambient temperature and low evaporation pressure of the adsorbate during heat release, the system can The temperature of the heat provided is relatively low, which cannot meet the needs of places with higher temperature, resulting in limited use of the actual system and poor economy

[0005] There is a common problem in existing heat storage devices: heat storage and heat release can only be carried out in the same place, and the maintainability of the device is poor after installation

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