Heat Transfer Model of Underground Heat Exchanger in the Aquifer

DOI

10.2991/emeit.2012.254How to use a DOI?

Keywords

Aquifer,Buried Tube Heat Exchanger,Vadose

Abstract

Combined with the theory of the vadose of porous medium,considered the change of the flow field around the U-type pipe laying,we establish the model of the flow and heat transfer in the aquifer to research the heat exchange problem between the U-type pipe laying and the medium around in the aquifer,analyse the heat transfer which influenced by the groundwater velocity,thermal parameters in the aquifer and so on.The result shows that compare with the claypan,the pipe laying will have better performance of heat exchange in the aquifer. Under the same work situation,the average temperature of the drilling wall in the aquifer is lower than that in the claypan,the process of pipe laying and heat exchange will come to the "steady state "more faster,the heat exchange of the pipe laying in aquifer will be easier when the coefficient of thermal conductivity be higher,and the change of temperature will be little in the aquifer if the heat capacity is greater,at the upstream and vertical direction,the faster of the groundwater flow velocity,the shorter to achieve to the steady state,the minor of the hot process radius,however,at the down stream,it will be line increasing between the hot process radius and runtime,and the faster of the groundwater flow velocity,the bigger of the hot process radius.

Copyright

© 2012, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Wenling Liu
AU  - Yan Chen
PY  - 2012/09
DA  - 2012/09
TI  - Heat Transfer Model of Underground Heat Exchanger in the Aquifer
BT  - Proceedings of the 2nd International Conference on Electronic & Mechanical Engineering and Information Technology (EMEIT 2012)
PB  - Atlantis Press
SP  - 1162
EP  - 1164
SN  - 1951-6851
UR  - https://doi.org/10.2991/emeit.2012.254
DO  - 10.2991/emeit.2012.254
ID  - Liu2012/09
ER  -