Parametric and experimental study on thermal performance of an earth-air heat exchanger

Ashish Shukla, G. N. Tiwari, M. S. Sodha

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

In the present paper a quasi-steady state mathematical model is developed to predict the outlet air temperature and monthly heating and cooling potentials of an earth-air heat exchanger. Monthly values of heating and cooling potentials are estimated by rigorous experimentation throughout the year for composite climate of New Delhi. The uncertainty values are calculated for each month; for December the value is 4.9%. It is observed that there is an 8.9 and a 5.9°C temperature rise and fall during winter and summer due to the earth-air heat exchanger buried at a depth of 1.5m underground. The correlation coefficient, root mean square of percentage deviation, reduced chi-square and mean bias error have been computed for each month. The values are 1, 3.0%, 0.8 and -0.63 for December. Statistical analysis shows that there is fair agreement between theoretical results and experimental observations for each month. Monthly values of heating and cooling potentials have also been predicted for other climatic conditions in India namely Jodhpur, Chennai, Mumbai and Kolkata.

Original languageEnglish
Pages (from-to)365-379
Number of pages15
JournalInternational Journal of Energy Research
Volume30
Issue number6
Early online date15 Aug 2005
DOIs
Publication statusPublished - May 2006
Externally publishedYes

Keywords

  • Cooling potential
  • Earth-air heat exchanger
  • Heating potential

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Fuel Technology
  • Nuclear Energy and Engineering

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