| In recent years, with the development of economy, we are facing the problems of energy shortage and environmental pollution, the energy-saving and environmental protection has become the core of the sustainable development. Surface-water source heat pumps(SWHPs), with the advantage of energy-savingd and environmental protection, are gained more and more attention. But because the engineering application is still in engineering exploration stage, the system theory is lack of research and some prombles have appeared in running process, the application and popularization of SWHPs is restricted, also the play of the advantages of energy-saving will be affected.This paper taked a close-loop surface water source heat pump system for example, analyzsed the experiments based on an actual projects at Nanjing Institute of Technology, used Fluent to make the numerical simulation. By comparing the calculation results with experimental date, this paper analyzed the the factors influencing water temperature distribution. The main contents are as follows:1)Introducing the research background, the application of SWHPs in home and abroad and the study on water temperature distribution.2)Introducing the general situation of the engineering at Nanjing Institute of Technology, describing how to carry out the experiment and measure the parameters.3)According to the results of past reached, created physical model and mathematical model based on actual engineering, determined the initial conditions and boundary conditions, grided mesh generation and determined the calculation method.4)2-D numerical simulations were implemented using Fluent software to discuss the effects of different factors on the water temperature distribution.5)By means of numerical simulation and experimental investigation, analyzing the different work conditions how to affect the water temperature. Comparing the heat transfers at different work conditions. |
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