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Research Article

Simulation and analysis on thermodynamic performance of surface water source heat pump system

Nan Lv1Qing Zhang1Zhenqian Chen1,2( )Dongsheng Wu3
School of Energy and Environment, Southeast University, Nanjing 210000, China
Jiangsu Provincial Key Laboratory of Solar Energy Science and Technology, School of Energy and Environment, Southeast University, Nanjing 210000, China
Architects & Engineers Co. ltd of Southeast University, Nanjing 210000, China
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Abstract

This work established a thermodynamic performance model of a heat pump system containing a heat pump unit model, an air conditioning cooling and heating load calculation model, a heat exchanger model and a water pump performance model based on mass and energy balances. The thermodynamic performance of a surface water source heat pump air conditioning system was simulated and verified by comparing the simulation results to an actual engineering project. In addition, the effects of the surface water temperature, heat exchanger structure and surface water pipeline transportation system on the thermodynamic performance of the heat pump air conditioning system were analyzed. Under the simulated conditions in this paper with a cooling load of 3400 kW, the results showed that a 1 °C decrease in the surface water temperature leads to a 2.3 percent increase in the coefficient of performance; furthermore, an additional 100 m of length for the closed-loop surface water heat exchanger tube leads to a 0.08 percent increase in the coefficient of performance. To decrease the system energy consumption, the optimal working point should be specified according to the surface water transportation length.

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Building Simulation
Pages 65-73
Cite this article:
Lv N, Zhang Q, Chen Z, et al. Simulation and analysis on thermodynamic performance of surface water source heat pump system. Building Simulation, 2017, 10(1): 65-73. https://doi.org/10.1007/s12273-016-0308-1

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Received: 22 January 2016
Revised: 05 June 2016
Accepted: 30 June 2016
Published: 08 August 2016
© Tsinghua University Press and Springer-Verlag Berlin Heidelberg 2016
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