Combined heat and power generation system and method provided with absorption heat pump

Abstract

The invention relates to a combined heat and power generation system and method provided with an absorption heat pump. The combined heat and power generation system comprises a steam turbine, a heater, a deaerator and the absorption heat pump. The steam turbine is communicated with the heater through a steam extraction pipeline, the absorption heat pump comprises an absorber, a generator and a condenser, heat supply network return water in a heat supply network loop is firstly input into a condenser heat exchanger to be heated for the first time, and then the heat supply network return water heated for the first time is input into an absorber heat exchanger to be heated for the second time to reach the temperature of heat supply network water supply. The absorber steam extraction valve and the generator steam extraction valve are adjusting valves and can adjust the amount of steam input into the absorber and the generator. When the heat supply amount needs to be adjusted, the temperature of the solution in the absorber can be changed by directly changing the steam extraction amount of the steam extraction valve of the absorber, the temperature of the heat supply network water supply output from the heat exchanger of the absorber is changed, and the heat supply amount is increased or reduced.

Description

technical field [0001] The invention relates to the technical field of cogeneration, in particular to a cogeneration system and method equipped with an absorption heat pump. Background technique [0002] As the domestic urbanization rate increases, urban enterprises and residents' demand for heat supply also increases. Since most cities currently adopt the method of central heating, a part of the heating demand is borne by the thermal power plant. When the traditional thermal power plant is running, the steam extracted from the steam turbine is used as the heat source of the heat pump to increase the heat supply of the heating network; if the heat load increases, generally By using more steam extracted from the steam turbine as a heat source to supply heat, the heating demand can be met. However, from the perspective of energy utilization, this method is less economical, and the steam energy utilization rate of the steam turbine is not high. There is a large amount of steam...

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the problem of low utilization rate of the steam energy of the steam turbine in the prior art, a combined heat and power system and method configured with an absorption heat pump are provided

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