[an error occurred while processing this directive] ������� 2011, 30(2) 301-306 DOI:     ISSN: 1004-5589 CN: 22-1111/P

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Article by Lv, P. 1
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Article by Sun, Y. H. 1
Article by Li, Q. 1
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�ؼ����� ��ܻ�����   ����   ��ֵģ��   ANSYS  
ANSYS simulation of soil temperature field around U-tube in geothermal well
LV Peng-1, 2, SUN You-Hong-1, LI Qiang-1
1�� College of Construction Engineering��Jilin University��Changchun 130026��China; 2�� Logistics Service��Changchun University of Science and Technology��Changchun 130022��China
Abstract:

Heat transfer between pipe heat exchanger and rock is a complex process��and finite element simulation method is an effective method to analyze this process�� Through the comparative analysis to two-dimensional single well model��the authors establish two-dimensional multi-wells heat transfer model��there are nine heat storage wells with interval of 4 meters for each�� The heat transfer process of this model follows the classic heat transfer theory�� According to the ANSYS grid division principle��solution region is divided into the cells with the maximum edge length of 0. 1 m and the smallest edge length of 0. 01 m�� Buried pipe is applied heat load density inside��and applied ground temperature boundary load outside��and after 72 hours simulation of heat storage process��accurate changing regularity of temperature field of rocks around multi-wells is obtained�� The highest temperature is 40. 263�棬the lowest is 10�棬and the influence radius is 1. 4 m�� The increased ampltude of temperature decreases�� and the migration patterns of temperature and heat are obtained�� The simulation results match well with the actual measurements��

Keywords: pipe heat exchanger   heat transfer   numerical simulation   ANSYS  
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