Combined circulating energy supplying system

Abstract

The invention provides a combined circulating energy supplying system, and belongs to the technical field of heat energy utilization and heat pumps. An air-steam forward circulating system is constituted by an air compressor, a boiler, an air turbine, a steam turbine, a waste heat boiler, a circulating pump and a heat exchanger, a compressed backward circulating system is constituted by a compressor , a second condenser, an evaporator, a low-temperature throttling valve, a second low-temperature throttling valve and a low-temperature heat exchanger, and an absorption type backward circulating system is constituted by an absorber, a generator, a condenser, the evaporator, a throttling valve, a solution pump and a solution heat exchanger; the air-steam forward circulating system provides power for the compressed backward circulating system and provides driving heat load for the absorption type backward circulating system, the compressed backward circulating system obtains low temperature heat load and respectively provides heat for the outside through the second condenser and the absorption type backward circulating system through the evaporator, and the absorption type backward circulating system provides the heat for the outside through the absorber and the condenser, so that the combined circulating energy supplying 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 six 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 the...

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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 six 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 the limitation of the working temperature range of the absorption heat pump working medium, there is a large temperature difference between the driving gas and the absorption heat pump working medium, 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 the 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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