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Effect of seawater intake methods on the performance of seawater source heat pump systems in cold climate areas

机译:寒冷地区海水摄入方式对海水源热泵系统性能的影响。

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The Seawater Source Heat Pump (SWHP) system is an energy-saving and environmentally-friendly technology for the cooling and heating of buildings. The SWHP system is based on obtaining "free" heat from the sea by using heat pumps. In this study, field test and analysis were conducted to compare the performances of beach well infiltration intake system and direct intake system for SWHP systems at the Liaodong Peninsula, China. The average unit COP was 2.99 for the direct intake system and 4.66 for the beach well infiltration intake system, with the average seawater temperature being 5.83 degrees C and 12.85 degrees C, respectively. The test results indicate that the beach well infiltration intake method effectively improves the stability, reliability and energy efficiency of the SWHP systems in cold climate areas, and the intake seawater temperature is a critical factor influencing the performance of SWHP system. A simulation study was conducted for further illustration that how the intake seawater temperature of the beach well infiltration intake system was increased. The simulation result shows that the intake seawater temperature of beach well infiltration intake system is higher than the direct intake system, and the main reason is that the underground seawater with higher temperature is extracted. The intake seawater temperature is very sensitive to the seepage velocity in a range, and the flow quantity of pump seawater should not be too large under limited engineering conditions. The simulation results are foundations for further successful SWHP system engineering. (C) 2017 Elsevier B.V. All rights reserved.
机译:海水源热泵(SWHP)系统是一种用于建筑物制冷和供暖的节能环保技术。 SWHP系统基于通过使用热泵从海上获取“自由”热量的基础。在这项研究中,进行了现场测试和分析,以比较中国辽东半岛的海滩井入渗系统和SWHP系统直接入水系统的性能。直接进水系统的平均单位COP为2.99,沙滩井入渗水系统的平均单位COP为4.66,平均海水温度分别为5.83摄氏度和12.85摄氏度。试验结果表明,海滩井入渗方法有效提高了寒冷地区SWHP系统的稳定性,可靠性和能效,海水进水温度是影响SWHP系统性能的关键因素。为了进一步说明海滩井入渗入水系统的进水海水温度如何提高,进行了模拟研究。仿真结果表明,海滩井入渗入水系统的入海水温高于直接入水系统,主要原因是提取了温度较高的地下水。进气海水温度在一定范围内对渗流速度非常敏感,在有限的工程条件下泵浦海水的流量不应太大。仿真结果为进一步成功的SWHP系统工程奠定了基础。 (C)2017 Elsevier B.V.保留所有权利。

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