가스엔진 VRF(Variable Refrigerant Flow) 히트펌프 시스템의 운전특성 및 이코노마이저 제어를 통한 에너지 절감 평가Evaluation of Gas Engine VRF(Variable Refrigerant Flow) Heat Pump Performance and Energy Savings of Economizer Control
- Other Titles
- Evaluation of Gas Engine VRF(Variable Refrigerant Flow) Heat Pump Performance and Energy Savings of Economizer Control
- Authors
- 김혜림; 전종욱; 김강수
- Issue Date
- 2018
- Publisher
- 한국생태환경건축학회
- Keywords
- 가스엔진 VRF 히트펌프; 이코노마이저; 에너지 시뮬레이션; 에너지플러스; Gas engine VRF heat pump; Economizer; Energy simulation; EnergyPlus
- Citation
- KIEAE Journal, v.18, no.2, pp.123 - 131
- Indexed
- KCI
- Journal Title
- KIEAE Journal
- Volume
- 18
- Number
- 2
- Start Page
- 123
- End Page
- 131
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/79601
- DOI
- 10.12813/kieae.2018.18.2.123
- ISSN
- 2288-968X
- Abstract
- Purpose: Building energy saving has been becoming important recently, and it could be achieved by improving HVAC system efficiency and operating HVAC system properly. The purpose of this study is to analyze gas engine VRF(Variable Refrigerant Flow) heat pump performance and to investigate energy effective economizer control in Korean climate. Method: In EnergyPlus, temperature-dependent cooling and heating performance of gas engine VRF heat pump was modeled and simulation results were compared to the actual gas consumption of the research facility. The energy saving potentials of differential dry bulb control and differential enthalpy control were also simulated and investigated. Result: The efficiency of gas engine VRF heat pump increases with decreasing outdoor air dry bulb temperature in summer and increasing outdoor air wet bulb temperature in winter. Differential dry bulb control saves 8% ventilation system sensible cooling energy, but use more 4% and 1% latent cooling energy in July and August when compared to the actual building outdoor air intake schedule. In Contrast, Differential enthalpy control saves 7% sensible and 11% latent cooling energy because Korea summer climate is hot and humid. As a result, differential enthalpy control is a suitable economizer control method for Korea considering climate characteristics.
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Collections - College of Engineering > Department of Architecture > 1. Journal Articles
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