A Literature Review on Heating of Ventilation Air with Large Diameter Earth Tubes in Cold Climates

Earth-air heat exchange (EAHE) systems offer the possibility of reducing use of nonrenewable energy for heating ventilation air in cold climates. The number of installations of large diameter (greater than 900 mm) EAHE systems reported for cold climates is small. Even less has been reported on their...

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Main Authors: Lili Tan, James A. Love
Format: Article
Language:English
Published: MDPI AG 2013-07-01
Series:Energies
Subjects:
Online Access:http://www.mdpi.com/1996-1073/6/8/3734
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author Lili Tan
James A. Love
author_facet Lili Tan
James A. Love
author_sort Lili Tan
collection DOAJ
description Earth-air heat exchange (EAHE) systems offer the possibility of reducing use of nonrenewable energy for heating ventilation air in cold climates. The number of installations of large diameter (greater than 900 mm) EAHE systems reported for cold climates is small. Even less has been reported on their heating performance, but the available information suggests that further rigorous assessment is warranted to determine whether the reported better than expected temperature rise is supported and, if so, the reasons for this. Another concern is the possibility of long-term heat depletion in the surrounding soil, which would affect performance. Only a couple of short-term experimental studies of ground temperature effects of heating with EAHE were found for cool climates. Four articles that addressed ground temperature effects with horizontal ground source heat pump exchangers had conflicting findings regarding heat depletion in the soil.
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spelling doaj.art-11253224236d45cdbb26cd88fe4007212022-12-22T02:06:58ZengMDPI AGEnergies1996-10732013-07-01683734374310.3390/en6083734A Literature Review on Heating of Ventilation Air with Large Diameter Earth Tubes in Cold ClimatesLili TanJames A. LoveEarth-air heat exchange (EAHE) systems offer the possibility of reducing use of nonrenewable energy for heating ventilation air in cold climates. The number of installations of large diameter (greater than 900 mm) EAHE systems reported for cold climates is small. Even less has been reported on their heating performance, but the available information suggests that further rigorous assessment is warranted to determine whether the reported better than expected temperature rise is supported and, if so, the reasons for this. Another concern is the possibility of long-term heat depletion in the surrounding soil, which would affect performance. Only a couple of short-term experimental studies of ground temperature effects of heating with EAHE were found for cool climates. Four articles that addressed ground temperature effects with horizontal ground source heat pump exchangers had conflicting findings regarding heat depletion in the soil.http://www.mdpi.com/1996-1073/6/8/3734earth air heat exchangersearth tubesventilationheatingground temperatures
spellingShingle Lili Tan
James A. Love
A Literature Review on Heating of Ventilation Air with Large Diameter Earth Tubes in Cold Climates
Energies
earth air heat exchangers
earth tubes
ventilation
heating
ground temperatures
title A Literature Review on Heating of Ventilation Air with Large Diameter Earth Tubes in Cold Climates
title_full A Literature Review on Heating of Ventilation Air with Large Diameter Earth Tubes in Cold Climates
title_fullStr A Literature Review on Heating of Ventilation Air with Large Diameter Earth Tubes in Cold Climates
title_full_unstemmed A Literature Review on Heating of Ventilation Air with Large Diameter Earth Tubes in Cold Climates
title_short A Literature Review on Heating of Ventilation Air with Large Diameter Earth Tubes in Cold Climates
title_sort literature review on heating of ventilation air with large diameter earth tubes in cold climates
topic earth air heat exchangers
earth tubes
ventilation
heating
ground temperatures
url http://www.mdpi.com/1996-1073/6/8/3734
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