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- [21] Influence of backfill air gap on soil temperature recovery in ground-coupled heat pumps Wang, Y. (wyfree1@126.com), 1600, China National Publications Import and Export (Group) Corporation (34):
- [22] Study on a design method for hybrid ground heat exchangers of ground-coupled heat pump system INTERNATIONAL JOURNAL OF REFRIGERATION-REVUE INTERNATIONALE DU FROID, 2017, 76 : 394 - 405