Comparison Evaluations of VRF and RTU Systems Performance on Flexible Research Platform
Joint Authors
Lee, Je-hyeon
Im, Piljae
Munk, Jeffrey D.
Malhotra, Mini
Kim, Min-seok
Song, Young-hak
Source
Issue
Vol. 2018, Issue 2018 (31 Dec. 2018), pp.1-16, 16 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2018-04-05
Country of Publication
Egypt
No. of Pages
16
Main Subjects
Abstract EN
The energy performance of a variable refrigerant flow (VRF) system was evaluated using an occupancy-emulated research building in the southeastern region of the United States.
Full- and part-load performance of the VRF system in heating and cooling seasons was compared with a conventional rooftop unit (RTU) variable-air-volume system with electric resistance heating.
During both the heating and cooling seasons, full- and part-load conditions (i.e., 100%, 75%, and 50% thermal loads) were maintained alternately for 2 to 3 days each, and the energy use, thermal conditions, and coefficient of performance (COP) for the RTU and VRF system were measured.
During the cooling season, the VRF system had an average COP of 4.2, 3.9, and 3.7 compared with 3.1, 3.0, and 2.5 for the RTU system under 100%, 75%, and 50% load conditions and resulted in estimated energy savings of 30%, 37%, and 47%, respectively.
During the heating season, the VRF system had an average COP ranging from 1.2 to 2.0, substantially higher than the COPs of the RTU system, and resulted in estimated energy savings of 51%, 47%, and 27% under the three load conditions, respectively.
American Psychological Association (APA)
Lee, Je-hyeon& Im, Piljae& Munk, Jeffrey D.& Malhotra, Mini& Kim, Min-seok& Song, Young-hak. 2018. Comparison Evaluations of VRF and RTU Systems Performance on Flexible Research Platform. Advances in Civil Engineering،Vol. 2018, no. 2018, pp.1-16.
https://search.emarefa.net/detail/BIM-1116618
Modern Language Association (MLA)
Lee, Je-hyeon…[et al.]. Comparison Evaluations of VRF and RTU Systems Performance on Flexible Research Platform. Advances in Civil Engineering No. 2018 (2018), pp.1-16.
https://search.emarefa.net/detail/BIM-1116618
American Medical Association (AMA)
Lee, Je-hyeon& Im, Piljae& Munk, Jeffrey D.& Malhotra, Mini& Kim, Min-seok& Song, Young-hak. Comparison Evaluations of VRF and RTU Systems Performance on Flexible Research Platform. Advances in Civil Engineering. 2018. Vol. 2018, no. 2018, pp.1-16.
https://search.emarefa.net/detail/BIM-1116618
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1116618