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地源热泵季节性能测试理论研究 被引量:1
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作者 张千 龚延风 《暖通空调》 北大核心 2014年第9期76-80,共5页
以夏季某典型工况下的地埋管实测水温为例,根据傅里叶级数近似算法及采样定理,确定还原整个夏季地埋管出水温度需要的最少测试点数目,建立了地源热泵季节性能工程测试方法。结果显示,在地埋管夏季运行期间,对其出口水温均匀测试4次,利用... 以夏季某典型工况下的地埋管实测水温为例,根据傅里叶级数近似算法及采样定理,确定还原整个夏季地埋管出水温度需要的最少测试点数目,建立了地源热泵季节性能工程测试方法。结果显示,在地埋管夏季运行期间,对其出口水温均匀测试4次,利用2阶谐波的傅里叶级数即可还原地埋管整个运行期的水温,且还原结果与实测结果吻合性较好;对2阶谐波的傅里叶级数相位放大2.3倍,可将还原结果误差降至±1%的范围内。 展开更多
关键词 地源热泵 季节性能测试 地埋管 出水温度 傅里叶分析 采样定理 2 阶谐波
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Case study of underground pipe ground coupled heat pump system 被引量:1
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作者 郑敏 李百毅 乔振勇 《Journal of Central South University》 SCIE EI CAS 2012年第3期664-668,共5页
Aiming to give some advices on the ground coupled heat pump system design in Siehuan Province, China, a typical ground source heat pump (GSHP) system in Sichuan Province was tested in a whole operational year, and t... Aiming to give some advices on the ground coupled heat pump system design in Siehuan Province, China, a typical ground source heat pump (GSHP) system in Sichuan Province was tested in a whole operational year, and the parameters of temperature and flow rate in different parts of system were measured during this period. The seasonal energy efficiency ratio was calculated and the performance of heat pump system in summer was compared with that in winter. The result shows that the coefficient of performance of the system reaches 3.63 in summer and 3.49 in winter, respectively. The heat balance in underground rock mass is acquired basically throughout the year, and the heat accumulation in the earth tends to be zero. 展开更多
关键词 ground coupled heat pump operational test parameters measurement
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