Combined cycle energy supply system

Abstract

The invention provides a combined cycle energy supply system, and belongs to the technical field of thermal energy utilization and heat pumps. An air turbine device forward cycle system is composed of an air compressor, a boiler and an air turbine mechanism. A compression type reverse circulation system is composed of a compressor, a cooler, an evaporator, an expander and a low-temperature heat exchanger. An absorption type reverse circulation system is composed of an absorber, a second absorber, a generator, a second generator, a condenser, the evaporator, a throttling valve, a solution pump, a second solution pump, a solution heat exchanger and a second solution heat exchanger. The air turbine device forward circulation supplies power to the compression type reverse circulation and supplies a drive thermal load to absorption type reverse circulation. The compression type reverse circulation obtains the low-temperature thermal load, supplies heat to outside through the cooler and supplies heat to the absorption type reverse circulation through the evaporator. The absorption type reverse circulation supplies heat to the outside through the absorber, the second absorber and the condenser, and the combined circulation power supply system is formed.

Description

Technical field: [0001] The invention belongs to the technical field of power, refrigeration and heat pump. Background technique: [0002] In the system where fuel is used for heating by combustion, there is a large temperature difference between the gas formed by combustion and the heated medium; There is also a large temperature difference; in distributed energy systems that use fuel combustion to provide heat sources, power supply is actually a restrictive additional condition, and there are still situations where the temperature difference cannot be fully utilized in many cases. Summarize the situation that it is difficult to realize the efficient utilization of heat energy, which can be mainly summarized into seven aspects: ①Under the condition of no power load, there is a large temperature difference between the gas and the heated medium that cannot be used, and the efficient utilization of heat energy cannot be realized; ②Absorption heat pump is configured , due to t...

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Problems solved by technology

[0002] In the system where fuel is used for heating by combustion, there is a large temperature difference between the gas formed by combustion and the heated medium; There is also a large temperature difference; in distributed energy systems that use fuel combustion to provide heat sources, power supply is actually a restrictive additional condition, and there are still situations where the temperature difference cannot be fully utilized in many cases

Summarize the situation that it is difficult to realize the efficient utilization of heat energy, which can be mainly summarized into seven aspects: ①Under the condition of no power load, there is a large temperature difference between the gas and the heated medium that cannot be used, and the efficient utilization of heat energy cannot be realized; ②Absorption heat pump is configured When the working medium of the absorption heat pump is limited by the working temperature range, there is a large temperature difference between the driving gas and the working medium of the absorption heat pump, and the use of the temperature difference is unreasonable; There is a large temperature difference; when the steam-driven absorption heat pump is used, this will lead to unreasonable utilization of the temperature difference; ④ lack of low-temperature heat resources, it is difficult to use the heat energy in the environment; ⑤ When the temperature of low-temperature heat resources is very low, it is impossible to find a suitable absorption heat pump The working medium with satisfactory thermal performance and safety performance of the heat pump device; ⑥ In case of inferior fuel, the gas turbine device cannot be directly used to realize the rational utilization of high-temperature heat energy;

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