Regional heating, cooling and power combined energy system and method based on absorption heat exchange

Abstract

The invention relates to a regional heating, cooling and power combined energy system and method based on absorption heat exchange. The system comprises four parts of equipment and is formed by connecting energy transmission and distribution networks formed by pipes with various water pumps and valves; the four parts of equipment are respectively a heat and power plant steam turbine power generation circulation sub system, an absorption dead steam afterheat recycling sub system, an absorption heat exchanging station/energy center and a distributed or semi-centralized air conditioner water heating sub system, wherein the heat and power plant steam turbine power generation circulation sub system is arranged on a thermal power plant and used for generating power and supplying heat; the absorption dead steam afterheat recycling sub system is arranged at an initial station of the thermal power plant and used for increasing the heat supplying and power generating efficiency by using the afterheat; the absorption heat exchanging station/energy center is arranged in a secondary network thermal substation and cold supply station; and the distributed or semi-centralized air conditioner water heating sub system is arranged at the user building and provided to the heat supply/air conditioner user. The method comprises three parts of operation regulation in a heating stage in winter, operation regulation in a cold supply stage in summer and operation regulation in a transitional stage beyond the two stages. According to the invention, the comprehensive energy utilization efficiency of a thermodynamic system can be effectively improved.

Description

technical field [0001] The invention belongs to the technical field of comprehensive utilization of thermoelectric cooling energy, and in particular relates to a regional thermoelectric cooling combined energy system based on absorption heat exchange. Background technique [0002] At present, the main system forms of heating in northern China are: combined heat and power generation, regional boiler room and decentralized heating each account for about 1 / 3, among which the combined heat and power generation has the highest primary energy utilization efficiency, the best emission reduction effect, and the most economical efficiency The promotion and application are limited by factors such as the difficulty of large-scale expansion of the heating network scale and its heating capacity, and it is urgent to adopt better technical routes and policy planning for promotion. The main current situation of thermal power plants for heating and power generation, user heating and cooling ...

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Problems solved by technology

[0002] At present, the main system forms of heating in northern China are: combined heat and power generation, regional boiler rooms and decentralized heating each account for about 1/3, among which combined heat and power generation has the highest primary energy utilization efficiency, the best e

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