A new type of passive solar energy utilization technology—The wall implanted with heat pipes

Abstract The heat transfer performance on the wall has a great influence on the energy conservation and the indoor thermal comfort. Once it can be adjustable according to the requirement, the wall can effectively regulate the indoor temperature, thereby directly reducing the building energy consumption. In this paper, a new type of passive solar energy utilization technology, the wall implanted with heat pipes (WIHP), was proposed, and its heat transfer performance and energy-saving characteristic were investigated theoretically and experimentally with the typical meteorological data of Jinan. The results indicate that the theoretical results agree well with experimental ones. The heat transfer performance of the WIHP is adjustable and controllable, which can reduce the heating load and improve thermal environment. During the winter in a typical year, the heat loss of the south external wall is reduced by 14.47%. Therefore, such a type of wall can apparently improve the indoor thermal environment, which can be popularized in engineering applications.

[1]  Xin Wang,et al.  Ideal thermal conductivity of a passive building wall: Determination method and understanding , 2013 .

[2]  U. Mital,et al.  A two-phase closed thermosyphon , 1972 .

[3]  Yvan Dutil,et al.  Experimental study of small-scale solar wall integrating phase change material , 2012 .

[4]  Wei Zhang,et al.  Analysis on the Selection of Working Fluid in the Small Diameter Gravity Heat Pipe - Based on a New Passive Technology , 2013 .

[5]  Luisa F. Cabeza,et al.  Use of microencapsulated PCM in concrete walls for energy savings , 2007 .

[6]  Liwei Tian,et al.  Low-energy envelope design of residential building in hot summer and cold winter zone in China , 2008 .

[7]  Mostafa A. Abd El-Baky,et al.  Heat pipe heat exchanger for heat recovery in air conditioning , 2007 .

[8]  Xin Wang,et al.  New concepts and approach for developing energy efficient buildings: Ideal specific heat for building internal thermal mass , 2011 .

[9]  Teruo Sawada,et al.  Heat transfer performance of an inclined two-phase closed thermosyphon , 1983 .

[10]  S. H. Noie.  Heat transfer characteristics of a two-phase closed thermosyphon , 2005 .

[11]  R. Velraj,et al.  Experimental investigation on phase change material based thermal storage system for solar air heating applications , 2013 .

[12]  A. Sari,et al.  Thermal conductivity and latent heat thermal energy storage characteristics of paraffin/expanded graphite composite as phase change material , 2007 .

[13]  E. Halawa,et al.  Thermal performance analysis of a phase change thermal storage unit for space heating , 2011 .

[14]  Yan Ding,et al.  Investigation on the influencing factors of energy consumption and thermal comfort for a passive solar house with water thermal storage wall , 2013 .

[15]  Hong Zhang,et al.  Research, development and industrial application of heat pipe technology in China , 2003 .

[16]  Niccolò Aste,et al.  The influence of the external walls thermal inertia on the energy performance of well insulated buildings , 2009 .

[17]  S. H. Noie-Baghban,et al.  Waste heat recovery using heat pipe heat exchanger (HPHE) for surgery rooms in hospitals , 2000 .

[18]  Wen-Shing Lee,et al.  Thermal performance of a two-phase thermosyphon energy storage system , 2003 .

[19]  Naouel Daouas,et al.  A study on optimum insulation thickness in walls and energy savings in Tunisian buildings based on analytical calculation of cooling and heating transmission loads , 2011 .

[20]  Jibao Shen,et al.  Numerical study on thermal behavior of classical or composite Trombe solar walls , 2007 .

[21]  Liwei Tian,et al.  Evaluation on energy and thermal performance for residential envelopes in hot summer and cold winter zone of China , 2009 .

[22]  Dan Zhou,et al.  Experimental investigations on heat transfer in phase change materials (PCMs) embedded in porous materials , 2011 .

[23]  Abdul Jabbar N. Khalifa,et al.  A comparative performance study of some thermal storage materials used for solar space heating , 2009 .

[24]  Robert F. Boehm,et al.  Passive building energy savings: A review of building envelope components , 2011 .

[25]  Wasim Saman,et al.  Numerical analysis of a PCM thermal storage system with varying wall temperature , 2005 .

[26]  T. Miyazaki,et al.  Heat transfer in two-phase closed-type thermosyphons , 1979 .

[27]  Chengbin Zhang,et al.  Thermal response of brick wall filled with phase change materials (PCM) under fluctuating outdoor te , 2011 .

[28]  Hongfa Di,et al.  Ideal thermophysical properties for free-cooling (or heating) buildings with constant thermal physical property material , 2006 .

[29]  Arvind Chel,et al.  Energy conservation in honey storage building using Trombe wall , 2008 .