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Title: Comparison of energy efficiency between variable refrigerant flow systems and ground source heat pump systems

Abstract

With the current movement toward net zero energy buildings, many technologies are promoted with emphasis on their superior energy efficiency. The variable refrigerant flow (VRF) and ground source heat pump (GSHP) systems are probably the most competitive technologies among these. However, there are few studies reporting the energy efficiency of VRF systems compared with GSHP systems. In this article, a preliminary comparison of energy efficiency between the air-source VRF and GSHP systems is presented. The computer simulation results show that GSHP system is more energy efficient than the air-source VRF system for conditioning a small office building in two selected US climates. In general, GSHP system is more energy efficient than the air-source VRV system, especially when the building has significant heating loads. For buildings with less heating loads, the GSHP system could still perform better than the air-source VRF system in terms of energy efficiency, but the resulting energy savings may be marginal.

Authors:
;
Publication Date:
Research Org.:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
Environmental Energy Technologies Division
OSTI Identifier:
988171
Report Number(s):
LBNL-3913E
TRN: US201018%%292
DOE Contract Number:  
DE-AC02-05CH11231
Resource Type:
Journal Article
Journal Name:
Energy and Buildings Magazine
Additional Journal Information:
Journal Volume: 2010; Journal Issue: 42
Country of Publication:
United States
Language:
English
Subject:
29; CLIMATES; COMPUTERIZED SIMULATION; ENERGY EFFICIENCY; GROUND SOURCE HEAT PUMPS; HEATING LOAD; OFFICE BUILDINGS; REFRIGERANTS; Building Simulation; DOE-2; Energy Efficiency; GSHP; VRF

Citation Formats

Hong, Tainzhen, and Liu, Xaiobing. Comparison of energy efficiency between variable refrigerant flow systems and ground source heat pump systems. United States: N. p., 2009. Web.
Hong, Tainzhen, & Liu, Xaiobing. Comparison of energy efficiency between variable refrigerant flow systems and ground source heat pump systems. United States.
Hong, Tainzhen, and Liu, Xaiobing. Sun . "Comparison of energy efficiency between variable refrigerant flow systems and ground source heat pump systems". United States. https://www.osti.gov/servlets/purl/988171.
@article{osti_988171,
title = {Comparison of energy efficiency between variable refrigerant flow systems and ground source heat pump systems},
author = {Hong, Tainzhen and Liu, Xaiobing},
abstractNote = {With the current movement toward net zero energy buildings, many technologies are promoted with emphasis on their superior energy efficiency. The variable refrigerant flow (VRF) and ground source heat pump (GSHP) systems are probably the most competitive technologies among these. However, there are few studies reporting the energy efficiency of VRF systems compared with GSHP systems. In this article, a preliminary comparison of energy efficiency between the air-source VRF and GSHP systems is presented. The computer simulation results show that GSHP system is more energy efficient than the air-source VRF system for conditioning a small office building in two selected US climates. In general, GSHP system is more energy efficient than the air-source VRV system, especially when the building has significant heating loads. For buildings with less heating loads, the GSHP system could still perform better than the air-source VRF system in terms of energy efficiency, but the resulting energy savings may be marginal.},
doi = {},
journal = {Energy and Buildings Magazine},
number = 42,
volume = 2010,
place = {United States},
year = {2009},
month = {11}
}