Transient effect of soil thermal conductivity and duration of operation on performance of Earth Air Tunnel Heat Exchanger

被引：78
作者：
Bansal, Vikas [1 ]
Misra, Rohit [2 ]
Das Agarwal, Ghanshyam [2 ]
Mathur, Jyotirmay [2 ]
机构：
[1] Govt Women Engn Coll Ajmer, Dept Mech Engn, Makhupura 305001, Ajmer, India
[2] Malaviya Natl Inst Technol, Dept Mech Engn, Jaipur, Rajasthan, India
来源：
APPLIED ENERGY | 2013年 / 103卷
关键词：
Earth Air Tunnel Heat Exchanger; Passive cooling; Computational Fluid Dynamics;
D O I：
10.1016/j.apenergy.2012.10.014
中图分类号：
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号：
0807 ; 0820 ;
摘要：
Effect of soil thermal conductivity and time period of continuous operation of EATHE on thermal performance has been carried out for different pipe length of EATHE using experimentally validated CFD simulation. In this paper, the authors aim to study the underground temperature characteristics of the soil surrounding the EATHE pipe and the effect of duration of operation of EATHE on its thermal performance. Maximum air temperature drop of 15.6, 17.0 and 17.3 K are observed for soil thermal conductivities of 0.52, 2 and 4 W m(-1) K-1 respectively. Maximum deterioration in the performance in terms of temperature drop obtained during continuous operation of 24 h is recorded as 2.9 K for soil with thermal conductivity of 0.52 W m(-1) K-1. Thickness of soil annulus surrounding the pipe up to which the thermal influence is observed depends on the thermal conductivity of the soil and period of continuous running of EATHE system. The thickness of the soil annulus beyond which no significant rise in temperature of soil is observed is equal to the pipe diameter. (C) 2012 Elsevier Ltd. All rights reserved.
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页码：1 / 11
页数：11
相关论文
共 24 条
  • [1] Ahmed A., 2015, IBPSA 2009 INT BUILD, V2009, P2228
  • [2] The cooling potential of earth-air heat exchangers for domestic buildings in a desert climate
    Al-Ajmi, F
    Loveday, DL
    Hanby, VI
    [J]. BUILDING AND ENVIRONMENT, 2006, 41 (03) : 235 - 244
  • [3] [Anonymous], 1997, P BUILD SIM 4 INT IB
  • [4] Performance analysis of earth-pipe-air heat exchanger for summer cooling
    Bansal, Vikas
    Misra, Rohit
    Das Agrawal, Ghanshyam
    Mathur, Jyotirmay
    [J]. ENERGY AND BUILDINGS, 2010, 42 (05) : 645 - 648
  • [5] Performance analysis of earth-pipe-air heat exchanger for winter heating
    Bansal, Vikas
    Misra, Rohit
    Das Agrawal, Ghanshyam
    Mathur, Jyotirmay
    [J]. ENERGY AND BUILDINGS, 2009, 41 (11) : 1151 - 1154
  • [6] Vertical temperature profile in ground heat exchanger during in-situ test
    Beier, Richard A.
    [J]. RENEWABLE ENERGY, 2011, 36 (05) : 1578 - 1587
  • [7] Performance analysis of a proposed solar assisted ground coupled heat pump system
    Chen, Xi
    Yang, Hongxing
    [J]. APPLIED ENERGY, 2012, 97 : 888 - 896
  • [8] A one-dimensional transient analytical model for earth-to-air heat exchangers, taking into account condensation phenomena and thermal perturbation from the upper free surface as well as around the buried pipes
    Cucumo, M.
    Cucumo, S.
    Montoro, L.
    Vulcano, A.
    [J]. INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER, 2008, 51 (3-4) : 506 - 516
  • [9] Cooled soil as a cooling source for buildings
    Givoni, Baruch
    [J]. SOLAR ENERGY, 2007, 81 (03) : 316 - 328
  • [10] Effects of multiple ground layers on thermal response test analysis and ground-source heat pump simulation
    Lee, C. K.
    [J]. APPLIED ENERGY, 2011, 88 (12) : 4405 - 4410
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