Revised heat transfer modeling of double-U vertical ground-coupled heat exchangers
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- 作者：P. Conti ; paolo.conti@for.unipi.it" class="auth_mail" title="E-mail the corresponding author ; D. Testi ; W. Grassi
- 关键词：Ground-source heat pump systems ; Ground heat exchangers ; Borehole thermal resistance ; Double-U boreholes ; Analytical modeling ; Heat transfer performance
- 刊名：Applied Thermal Engineering
- 出版年：2016
- 出版时间：5 August 2016
- 年：2016
- 卷：106
- 期：Complete
- 页码：1257-1267
- 全文大小：1166 K
文摘
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We propose five plain formulas to predict the thermal performance of double-U BHEs.
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Traditional ∊-NTU theory is coupled with the concept of the BHE thermal resistance.
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All possible parallel and series flow configurations are considered.
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We compare double-U and single-U configurations, also in terms of pumping power.
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The proposed formulas are useful tools for BHE design and performance evaluation.