Solar vacuum heat collection pipe having approximate counter-current heat exchange effect and vacuum heat collection system
Publication date
2018-09-04
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Patent
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Y02E10/44
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Chen, Y, Yang, T, Sun, Q, Wang, C, Li, H, Luo, F & Yin, H Sept. 04 2018, Solar vacuum heat collection pipe having approximate counter-current heat exchange effect and vacuum heat collection system, Patent No. ZL 201710281853.0. < https://patents.google.com/patent/CN107144024A/en >