Analysis of influencing factors on soil thermal conductivity test in ground source heat pump.
[In Chinese. / En chinois.]
Author(s) : WANG F. H., YAN L., FENG C., et al.
Type of article: Article
Summary
A three dimensional numerical model of ground source heat pump system was established. The effects of testing time, starting time, borehole radius, initial ground temperature and heat injection rate on identified thermal conductivity of the deep ground soil were analyzed based on the numerical model. The simulation results showed that thermal response test time should be more than 70 h; For cylinder-source model, with the increase of the size of the borehole, the identified thermal conductivity gradually decreased; The initial temperature of ground soil has no effect on the result of thermal conductivity identification, but the testing precision of the initial temperature has larger effects to identification results when the parameter estimation method is adopted; For pure thermal conductivity model, heat injection rate has no effect on thermal conductivity identification results.
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Details
- Original title: [In Chinese. / En chinois.]
- Record ID : 30008059
- Languages: Chinese
- Source: Journal of Refrigeration - vol. 33 - n. 146
- Publication date: 2012/08
- DOI: http://dx.doi.org/10.3969/j.issn.0253-4339.2012.04.016
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Indexing
- Themes: Heat pumps techniques
- Keywords: Thermal conductivity; Thermal analysis; Ground; Simulation; Heat pump
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- Source: Clima 2013. 11th REHVA World Congress and 8th International Conference on Indoor Air Quality, Ventilation and Energy Conservation in Buildings.
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- Date : 2011/03
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- Date : 2011/08/21
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- Source: Proceedings of the 23rd IIR International Congress of Refrigeration: Prague, Czech Republic, August 21-26, 2011. Overarching theme: Refrigeration for Sustainable Development.
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- Date : 2014/07/14
- Languages : English
- Source: 2014 Purdue Conferences. 3rd International High Performance Buildings Conference at Purdue.
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