Results 151 to 160 of about 204,167 (205)
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A novel enhanced deep borehole heat exchanger for building heating
Applied Thermal Engineering, 2020Abstract Deep borehole heat exchanger (DBHE) technology can be used in various regions due to without dependence on the hot water reservoir. However, its performance can hardly be improved due to poor thermal conductivity of rocks and cement. Here a novel enhanced deep borehole heat exchanger (EDBHE) is first proposed, which applies composite filler,
Yujiang He, Xianbiao Bu
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Borehole resistance and vertical temperature profiles in coaxial borehole heat exchangers
Applied Energy, 2013Ground source heat pump systems are often coupled to the ground by circulating a fluid through vertical Borehole Heat Exchangers (BHEs). The design of a system requires estimates of the ground thermal conductivity and the borehole thermal resistance, which are usually determined by an in situ thermal response test on a completed borehole.
Richard A. Beier +3 more
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Spectral framework for geothermal borehole heat exchangers
International Journal of Numerical Methods for Heat & Fluid Flow, 2010PurposeThis paper aims to present a framework for deriving analytical and semi‐numerical models for coupled conductive‐convective heat transfer processes in a borehole heat exchanger subjected to general initial and boundary conditions.Design/methodology/approachThe discrete Fourier transform and the spectral element method have been utilized for ...
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Heat transfer analysis of ground heat exchangers with inclined boreholes
Applied Thermal Engineering, 2006Consisting of closed-loop of pipes buried in boreholes, ground heat exchangers (GHEs) are devised for extraction or injection of thermal energy from/into the ground. Evolved from the vertical borehole systems, the configuration of inclined boreholes is considered in order to reduce the land plots required to install the GHEs in densely populated areas.
Ping Cui, Hongxing Yang, Zhaohong Fang
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Heat Transfer Optimisation for Borehole Heat Exchangers
A thesis submitted in total fulfillment of the requirements for the degree of Master of Engineering to the School of Computing, Engineering and Mathematical Sciences, La Trobe University, Victoria, Australia.openaire +1 more source