Combined heating and power system

Abstract

The invention provides a combined heating and power system and belongs to the technical field of CCHP (combined cooling, heating and power) and absorption heat pumps. An absorption heat pump cycling system comprises an absorber, a second absorber, a generator, a second generator, a solution pump, a second solution pump, a solution heat exchanger and a second solution heat exchanger, wherein a power machine provides low-temperature heat load through a low-temperature condenser, a heater and a second heater, and a circulating pump forms self-communication through a circulating medium pipeline by means of the low-temperature condenser, the heater, the second heater, an evaporator and the second generator; and the generator communicates with the outside through a high-temperature heat medium channel, the absorber and a condenser communicate with the outside through heated medium channels, the second absorber communicates with the outside through a cooling medium channel, and the combined heating and power system is formed.

Description

[0001] Technical field: [0002] The invention belongs to the technical field of cogeneration of heat, electricity and cooling and absorption heat pump. [0003] Background technique: [0004] In the traditional heat and power cogeneration system that uses thermal fluid sensible heat as the heat load delivery method, there are many areas to be improved, mainly reflected in: (1) long-distance, large-scale and staged heat supply in the heat and power cogeneration system , the temperature of the primary pipe network is high, the pressure is high, and the pipeline is often located in a densely populated urban area, there are safety hazards, and the initial investment of the pipe network is large; (2) The temperature difference between the low-pressure exhaust steam discharged from the steam power plant and the environment It is often difficult to use; (3) For steam power plants that use coal as fuel, there is a heat transfer temperature difference between gas and power cycle steam ...

AI Technical Summary

Problems solved by technology

[0004] In the traditional heat and power cogeneration system that uses thermal fluid sensible heat as the heat load delivery method, there are many areas to be improved, mainly reflected in: (1) long-distance, large-scale and staged heat supply in the heat and power cogeneration system , the temperature of the primary pipe network is high, the pressure is high, and the pipeline is often located in a densely populated urban area, there are safety hazards, and the initial investment of the pipe network is large; (2) The temperature difference between the low-pressure exhaust steam discharged from the steam power plant and the environment It is often difficult to use; (3) For steam power plants that use coal as fuel, there is a heat transfer temperature difference between gas and power cycle steam that is difficult to use effectively, resulting in low comprehensive energy utilization of the combined heat and power system; (4) a There is a large heat transfer temperature difference between the circulating medium of the primary pipe network and the circulating medium of the secondary pipe network or the heated medium, which has not been utilized; (5) Brings certain restrictions on the utilization of clean energy in the combined heat and power generation system

Images