Theoretical design and analysis of thewaste heat recovery system of turbine exhaust steam using an absorption heat pump for heating supply

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Abstract

In northern China, many thermal power plants use absorption heat pump to recover low-grade heat from turbine exhaust steam due to the irreplaceable advantages of the absorption heat pump in waste heat recovery. In the process of designing a waste heat recovery system, few researchers have considered the relationship between the design power of the heat pump and the actual heating load of the heating network. Based on the heating load characteristics, this paper puts forward a design idea which uses an absorption heat pump to recover waste heat from a steam turbine exhaust for heating supply. The operation mode of the system for different design powers of the heat pump was stated. An economic analysis model of the waste heat recovery system was proposed, and the optimal design power of the heat pump could be obtained. For a specific unit, the corresponding waste heat recovery system was designed, and various factors affecting the economy of the system were discussed and analyzed in detail.

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Wang, J., Liu, W., Liu, G., Sun, W., Li, G., & Qiu, B. (2020). Theoretical design and analysis of thewaste heat recovery system of turbine exhaust steam using an absorption heat pump for heating supply. Energies, 13(23). https://doi.org/10.3390/en13236256

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