An absorption heat pump refrigeration power cogeneration method

Abstract

A refrigeration-power combined supply method of an absorption type heat pump comprises using working medium and substance having a great solubility in the working medium to constitute working pair, charging weak solution of the working pair into a generator (1), heating the generator (1) by a heat source, evaporating the weak solution of the working pair in the generator (1) to generate working medium steam, the working medium steam generating by the generator (1) being expended to do work and be decompressed by a first expansion machine (2), dead steam exhausted by the first expansion machine (2) being heat-absorbed and evaporated through an evaporator (3) so that the refrigerant liquid therein is evaporated into low-pressure steam, and the low-pressure steam entering an absorber (4) to be absorbed and release heat. The initial temperature of a steam power device is raised substantially, and the temperature of the exhausted steam is reduced, so that efficiency of the steam power device is improved substantially. Because adsorption heat is used for manufacturing a driving heat source, the system can be driven by itself.

Description

technical field [0001] The invention relates to a power supply method and belongs to the technical field of thermal power. Background technique [0002] For general steam power output devices (steam engines, steam turbines), the thermal efficiency of steam expansion work is affected by initial temperature, initial pressure, exhaust steam temperature, and exhaust steam pressure. [0003] When the initial temperature is constant, the higher the temperature difference, the higher the efficiency. The higher the initial pressure, the higher the efficiency. When the initial temperature is constant, the lower the exhaust temperature, the higher the efficiency; the lower the exhaust pressure, the higher the efficiency. [0004] Since the steam power plant expands and does work, it will generate flashing steam, which needs to be condensed into working liquid to make the cycle go on. Therefore, the exhaust temperature of the steam power plant generally needs to be higher than the a...

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Problems solved by technology

[0005] Secondly, because the low-grade heat source cannot provide a high initial temperature, and the exhaust steam temperature must be higher than the ambient temperature, the steam power mechanical efficiency of the low-grade heat source is low, and the practical value is low

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