Data, exergy, and energy analysis of a vertical-bore, ground-source heat pump to for domestic water heating under simulated occupancy conditions

Ally, Moonis Raza; Munk, Jeffrey D.; Baxter, Van D.; Gehl, Anthony C.

doi:10.1016/j.applthermaleng.2015.05.021

Title: Data, exergy, and energy analysis of a vertical-bore, ground-source heat pump to for domestic water heating under simulated occupancy conditions

Journal Article · Wed May 27 00:00:00 EDT 2015 · Applied Thermal Engineering

DOI:https://doi.org/10.1016/j.applthermaleng.2015.05.021· OSTI ID:1190756

Ally, Moonis Raza ^[1]; Munk, Jeffrey D. ^[1]; Baxter, Van D. ^[1]; Gehl, Anthony C. ^[1]

Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

Evidence is provided to support the view that greater than two-thirds of energy required to produce domestic hot water may be extracted from the ground which serves as renewable energy resource. The case refers to a 345 m2 research house located in Oak Ridge, Tennessee, 36.01 N 84.26 W in a mixed-humid climate with HDD of 2218 C-days (3993 F-days) and CDD of 723 C-days (1301 F-days). The house is operated under simulated occupancy conditions in which the hot water use protocol is based on the Building America Research Benchmark Definition (Hendron 2008; Hendron and Engebrecht 2010) which captures the water consumption lifestyles of the average family in the United States. The 5.275 (1.5-ton) water-to-water ground source heat pump (WW-GSHP) shared the same vertical bore with a 7.56 KW water-to-air ground source heat pump for space conditioning the same house. Energy and exergy analysis of data collected continuously over a twelve month period provide performance metrics and sources of inherent systemic inefficiencies. Data and analyses are vital to better understand how WW-GSHPs may be further improved to enable the ground to be used as a renewable energy resource.

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Research Organization:: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States). Building Technologies Research and Integration Center (BTRIC)

Sponsoring Organization:: USDOE Office of Energy Efficiency and Renewable Energy (EERE), Energy Efficiency Office. Building Technologies Office

Grant/Contract Number:: AC05-00OR22725

OSTI ID:: 1190756

Alternate ID(s):: OSTI ID: 1250993

Journal Information:: Applied Thermal Engineering, Vol. 89; ISSN 1359-4311

Publisher:: ElsevierCopyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 8 works

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