Cooling and power combined supply method and device of adsorptive heat pump

Abstract

The invention discloses a cooling and power combined supply method and device of an adsorptive heat pump and relates to the technical field of heat power. In the method, an expansion machine is a substitute for a cooling cycle condenser and a throttling reliever of the absorptive heat pump, cooling cycle of the adsorptive heat pump is improved into cooling and power combined supply cycling of the adsorptive heat pump, working medium is heated to desorb on an adsorption bed and enters the expansion machine to expand, act and relieve pressure, dead steam discharged from the expansion machine is subjected to heat absorption and evaporation through an evaporator, and low-pressure steam enters the adsorption bed to absorb and discharge heat. Steam discharge temperature of the expansion machine is lower than the environment temperature, steam discharge temperature is lowered and efficiency of a steam power device is improved. Compared with a combined power system formed by organic Rankin steam cycle, the steam power device is higher in system efficiency. Adsorption heat can be utilized to make driving heat source steam, the system is automatically driven without high-temperature driving heat sources, only a single low-level heat source is needed, and cooling, heating and power can be provided at the same time, and the cooling and power combined supply method and device are low in carbon emission and environment friendly.

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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