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Title: An Analysis on Cost Reduction Potential of Vertical Bore Ground Heat Exchangers Used for Ground Source Heat Pump Systems

Abstract

The cost for installing ground heat exchangers (GHXs) used for ground source heat pump (GSHP) systems usually accounts for more than 30% of the total cost of a GSHP system and it is the biggest contributor to the cost premium of GSHPs compared with conventional HVAC systems. This study evaluates the cost reduction potential of several possible improvements in borehole heat transfer and bore field layout. A detailed cost model for GHX installation was updated and new features were added to account for various GHX designs, geological conditions, and drilling technologies. Coupled with a well-established GHX sizing program, a systematic study was conducted to assess the impacts of these improvements on the needed total drilling length and resulting cost under various geological and loading conditions. Finally, improvements with significant potential to reduce GHX installation cost are recommended.

Authors:
ORCiD logo [1]; ORCiD logo [1];  [2];  [3]
  1. ORNL
  2. University of Alabama
  3. University of Tennessee, Knoxville
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE Office of Energy Efficiency and Renewable Energy (EERE)
OSTI Identifier:
1502537
DOE Contract Number:  
AC05-00OR22725
Resource Type:
Conference
Resource Relation:
Conference: 2019 Stanford Geothermal Workshop 44th Annual Conference - Stanford, California, United States of America - 2/11/2019 5:00:00 AM-2/13/2019 5:00:00 AM
Country of Publication:
United States
Language:
English

Citation Formats

Liu, Xiaobing, Polsky, Yarom, Qian, Defeng, and Mcdonald, Joshua. An Analysis on Cost Reduction Potential of Vertical Bore Ground Heat Exchangers Used for Ground Source Heat Pump Systems. United States: N. p., 2019. Web.
Liu, Xiaobing, Polsky, Yarom, Qian, Defeng, & Mcdonald, Joshua. An Analysis on Cost Reduction Potential of Vertical Bore Ground Heat Exchangers Used for Ground Source Heat Pump Systems. United States.
Liu, Xiaobing, Polsky, Yarom, Qian, Defeng, and Mcdonald, Joshua. Fri . "An Analysis on Cost Reduction Potential of Vertical Bore Ground Heat Exchangers Used for Ground Source Heat Pump Systems". United States. https://www.osti.gov/servlets/purl/1502537.
@article{osti_1502537,
title = {An Analysis on Cost Reduction Potential of Vertical Bore Ground Heat Exchangers Used for Ground Source Heat Pump Systems},
author = {Liu, Xiaobing and Polsky, Yarom and Qian, Defeng and Mcdonald, Joshua},
abstractNote = {The cost for installing ground heat exchangers (GHXs) used for ground source heat pump (GSHP) systems usually accounts for more than 30% of the total cost of a GSHP system and it is the biggest contributor to the cost premium of GSHPs compared with conventional HVAC systems. This study evaluates the cost reduction potential of several possible improvements in borehole heat transfer and bore field layout. A detailed cost model for GHX installation was updated and new features were added to account for various GHX designs, geological conditions, and drilling technologies. Coupled with a well-established GHX sizing program, a systematic study was conducted to assess the impacts of these improvements on the needed total drilling length and resulting cost under various geological and loading conditions. Finally, improvements with significant potential to reduce GHX installation cost are recommended.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2019},
month = {2}
}

Conference:
Other availability
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