Experimental prediction of total thermal resistance of a closed loop EAHE for greenhouse cooling system


ÖZGENER Ö. , Ozgener L., GOSWAMI D. Y.

INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER, vol.38, no.6, pp.711-716, 2011 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 38 Issue: 6
  • Publication Date: 2011
  • Doi Number: 10.1016/j.icheatmasstransfer.2011.03.009
  • Title of Journal : INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER
  • Page Numbers: pp.711-716

Abstract

The design of an earth to air heat exchanger (EAHE) requires knowledge of its total thermal resistance (R(Tot)) for heating and cooling applications. In this research, a 47 m long horizontal, 56 cm nominal diameter U-bend buried galvanized was studied experimental EAHE used for the determination and evaluation of thermal properties of heat exchanger. This system was designed and installed in the Solar Energy Institute, Ege University, Izmir, Turkey. Based on the experimental results, generalized relationships were developed for predicting of thermal resistance of the heat exchanger. Average total heat exchanger thermal resistance was estimated to be 0.021 K-m/W as a constant value under steady state condition. (C) 2011 Elsevier Ltd. All rights reserved.