Absorption-type chemical energy storage device containing crystals

Abstract

The invention discloses an absorption-type chemical energy storage device containing crystals. The device comprises a generator, an absorber, an evaporator, a condenser, a throttle valve, a solution pump, a concentrated solution storage tank, a dilute solution storage tank, a gas and liquid heat exchanger, a refrigerant storage tank and the like, wherein a solution heat exchange pipe and a cooling coil pipe are arranged in the concentrated solution storage tank; and an anti-crystallinic pipe is bypassed outside the solution heat exchange pipe for dissolving the crystals. The energy storage device disclosed by the invention can convert solar energy, industrial residual heat, sufficient electrical quantity and the like into chemical energy to be stored, and the mismatching of space, time and amount between a source side and an user side is solved; the energy storage technology can be used for changing defects into benefits, energy storage is carried out by utilizing an absorbent crystallization phenomenon, and the energy storage density is improved; anti-crystallinic measures are disclosed, and the normal operation of energy storage and release is ensured; the system circulation form is improved, the step heat energy utilization is realized, and the utilization efficiency of heat sources is improved; and functions of the device are expanded, so that four modes, namely energy storage, energy release, direct energy supply and simultaneous storage and release, are realized.

Description

technical field [0001] The invention is an absorption chemical energy storage device containing crystals, which relates to the field of adjusting and controlling the system capacity by using chemical energy storage, and particularly relates to the utilization of renewable energy such as solar energy and geothermal energy, waste heat recovery, and combined cooling, heating and power supply systems and other fields, belonging to the field of refrigeration and air conditioning equipment. Background technique [0002] Energy storage technology is a means to solve the mismatch between energy supply and demand in terms of time, space and intensity to improve energy utilization, and it is also an important energy-saving method. As renewable energy such as solar energy with great development potential in the future, due to its periodic, random, low-density, and low-grade energy supply characteristics, energy storage technology will play a vital role in its utilization. Among variou...

AI Technical Summary

Problems solved by technology

However, this technical solution still has the following deficiencies: ① Due to the high concentration of the concentrated solution outlet of the generator, after further cooling by the solution heat exchanger, the outlet of the solution heat exchanger is prone to the risk of crystallization, which will cause the absorption unit to malfunction ② the concentrated solution tank can only store solution, and there is no effective crystal melting measure after it is used to store crystals; ③ there is still a large room for improvement in energy storage density; Utilize space; ⑤The device can only realize two operating modes of energy release and energy storage

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