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泵管道过滤器 被引量:1
1
作者 薛福连 《无机盐工业》 CAS 2004年第4期60-60,共1页
关键词 泵管道过滤器 齿轮 滤网 过滤能力
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Case study of underground pipe ground coupled heat pump system 被引量:1
2
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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