PERFORMANCE CURVES FOR EARTH TUBE HEAT EXCHANGERS.

Research output: Contribution to journalConference article

Abstract

A time dependent axisymmetric finite element formulation of an earth-tube system is used to evaluate its thermal performance characteristics. The parameters included in this system are: pipe diameter, pipe length, initial soil moisture concentration and temperature and ambient air temperature. Design curves for both heating and cooling are presented. A simple illustrative example for swine farrowing facility shows that the earth tube system is cost effective, and the system payback period is less than 5 years.

Original languageEnglish (US)
JournalPaper - American Society of Agricultural Engineers
StatePublished - Dec 1 1984

All Science Journal Classification (ASJC) codes

  • Agricultural and Biological Sciences (miscellaneous)

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