PERFORMANCE CURVES FOR EARTH TUBE HEAT EXCHANGERS.

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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 - 1984

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heat exchangers
pipes
Hot Temperature
heat
Temperature
farrowing
Heating
ambient temperature
air temperature
Swine
Soil
cooling
Air
soil water
Costs and Cost Analysis
swine
temperature

All Science Journal Classification (ASJC) codes

  • Agricultural and Biological Sciences (miscellaneous)

Cite this

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title = "PERFORMANCE CURVES FOR EARTH TUBE HEAT EXCHANGERS.",
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.",
author = "Virendra Puri",
year = "1984",
language = "English (US)",
journal = "Paper - American Society of Agricultural Engineers",
issn = "0145-0166",

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AU - Puri, Virendra

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AB - 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.

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