Double-absorption working medium heat storage type open absorption heat exchange system

Abstract

The invention discloses a double-absorption working medium heat storage type open absorption heat exchange system which comprises a high-pressure generator, a low-pressure generator, an open absorber, a closed absorber, a condenser and an evaporator. A solution pipeline of the high-pressure generator is communicated with the open absorber, and a solution pipeline of the low-pressure generator is communicated with the closed absorber. A steam outlet of the high-pressure generator is communicated with an inlet of a heating pipe in the low-pressure generator, a steam outlet of the low-pressure generator is communicated with a refrigerant inlet of the condenser, and a refrigerant outlet of the condenser is communicated with a refrigerant inlet of the evaporator through a water pump. A steam outlet of the evaporator is connected to the closed absorber through a fourth throttling valve, a to-be-heated water pipe and a solution spraying device are arranged in the closed absorber, and an outlet of the to-be-heated water pipe is connected to a heat supply tail end. According to the double-absorption working medium heat storage type open absorption heat exchange system, the heat storage density, the heat output temperature and the high-humidity air latent heat recovery rate of an absorption type heat storage system can be improved, and the problem of corrosion of an open absorption system can be effectively solved through mutually independent solution loops.

Description

technical field [0001] The invention relates to an absorption heat storage system, in particular to an open type absorption heat exchange system with double absorption working medium heat storage. Background technique [0002] Our country is very rich in solar energy resources, and the regions that account for more than two-thirds of the country's total area have good conditions for utilizing solar energy. However, the intermittent, dispersed, and unstable energy supply and demand of solar energy have seriously restricted the promotion of solar energy utilization technologies. . At the same time, a large amount of industrial waste heat in our country is directly discharged into the environment in the form of waste heat due to the lack of advanced technology for energy deployment and conversion utilization, which cannot be effectively recycled, resulting in a great waste of energy. Therefore, solar thermal utilization and energy saving The field of emission reduction urgentl...

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Problems solved by technology

Among them, lithium bromide moisture absorbent has low water vapor partial pressure and high heat storage density, but is highly corrosive and high in cost; calcium chloride moisture absorbent is weak in corrosion and low in cost, but has high water vapor partial pressure and low heat storage density.

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