Three-phase energy storage method of solar air conditioner

Abstract

The invention provides a three-phase energy storage method of a solar air conditioner, and belongs to the field of solar air conditioners. An absorbing type refrigerating working pair serves as an energy storage medium, a three-phase energy storage device is connected with a generator in a solar absorbing type refrigerating system in parallel, a solar heat collecting medium provides heat for the three-phase energy storage device and the generator, surplus solar collected heat is stored in the three-phase storage device in an energy storage medium chemical potential energy mode by adjusting the flow of the heating collecting medium entering the three-phase energy storage device in real time, and good matching of a drive heat source and an air conditioner load is achieved. The three-phase energy storage method avoids the dangers brought by crystallization during serial connection of a two-phase energy storage device and a generator in the prior art, the load adjusting function of the solar air conditioner can be achieved through an energy storage system by means of gas-liquid-solid three-phase high energy storage density, and the crystallization rate of 50% enables the size of the energy storage device to be reduced by more than a half than the size of an energy storage device in a two-phase energy storage mode. The system is simple, adjustment is convenient and flexible, the amount of released cold is stable, and a common solar air conditioning system can be easily improved into an energy storage air conditioning system.

Description

technical field [0001] The invention belongs to the technical field of solar air conditioning, and in particular relates to a three-phase energy storage method organically combined with a traditional solar absorption refrigeration and air conditioning system. Background technique [0002] Solar thermal utilization is one of the main forms of utilization of solar energy. In order to improve the utilization rate of solar energy and solve the imbalance between solar energy supply and air-conditioning cooling, the energy storage method and its organic combination with refrigeration and air-conditioning are the key to further high-efficiency, low-cost, and large-scale application of solar air-conditioning. The energy storage of solar absorption refrigeration and air-conditioning systems usually adopts sensible heat energy storage and phase change energy storage. The former adopts the form of hot water storage or cold water storage. Large, but the heat transfer temperature differ...

AI Technical Summary

Problems solved by technology

However, the energy storage type solar air conditioner adopts the vapor-liquid two-phase energy storage method at present. The energy storage device is connected in series with the generator in the absorption refrigeration system. This energy storage method has several serious shortcomings: 1) when the energy storage ends, the The concentration should not be too high to avoid the danger of crystallization, or to dissolve the crystals by adding complex devices; 2) The solar energy cannot be fully utilized, and refrigerant vapor cannot be generated for several hours before sunset; 3) The system is complex, driving heat sources and air conditioners The matching control of the load size is more difficult; 4) The cooling capacity of the energy release process system is getting lower and lower

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