Journal of the Korean Society for Geothermal and Hydrothermal Energy (한국지열·수열에너지학회논문집)

Korean Society for Geothermal and Hydrothermal Energy (한국지열·수열에너지학회)
권호 표지
DOI QR코드

DOI QR Code

Capacity and Power Input Performance Curves Creation of Water-cooled VRF Heat Pump for EnergyPlus

EnergyPlus 해석용 수랭식 VRF 히트펌프의 냉·난방 능력 및 소비전력 예측식 산출 기법

  • Kim, Min-Ji (Graduate School, Hanbat National University) ;
  • Kwon, Hyuk-Joo (Graduate School, Hanbat National University) ;
  • Lee, Kwang Ho (Department of Architectural Engineering, Hanbat National University)
  • 김민지 (한밭대학교 대학원 건축공학과) ;
  • 권혁주 (한밭대학교 대학원 건축공학과) ;
  • 이광호 (한밭대학교 건축공학과)
  • Received : 2017.07.10
  • Accepted : 2017.08.28
  • Published : 2017.09.01
Download PDF
⟨ Previous Next ⟩

Abstract

Variable refrigerant flow (VRF) systems have recently attracted attention in many countries due to a variety of advantages over conventional system. Especially, the water-cooled VRF heat pump, including geothermal heat pump, is a system that accurately controls the flow rate of refrigerant for the improved efficiency under part load operation. This paper describe the process of generating the cooling and heating energy performance curve coefficients and performance expressions for modeling water cooled VRF system using EnergyPlus. Through this study, the process for generating performance curves can be implemented into EnergyPlus or other comparable building energy analysis tools for the long-term evaluation of heat pump under dynamic conditions.

Keywords

References

  1. Energy Consumption Survey, Korea Energy Economics Institute, 2014
  2. Hyun, I. T., Lee, J. H., Cheon, S, H., and Lee, K. H., 2015, Development of Cooling Energy Input Curve Coefficients for VRF Heat Pumps in EnergyPlus, Proceeding of the SAREK, Gang Won do, South Korea, pp. 400-403.
  3. Lee, S. H., Choi, S., Kim, B. S., Lee, J. K., and Lee, K. H., 2011, Heating Performance Evaluation of the VRF Heat pump System with Refrigerant Heating Cycle for the Extreme Cold Region, Korean journal of Air-Conditioning and Refrigeration Engineering, Vol. 23, No. 8, pp. 571-579. https://doi.org/10.6110/KJACR.2011.23.8.571
  4. Kim, J. M., Choi, J. B., Lee, S. W., Choi, D. H., Lee, P. H., and Kim, Y. J., 2011, Development of Comfort Control Logic for VRF System in Summer Season by using 3 Environment Factor (Temperature, Humidity and Air Flow), Korean Journal of Air-Conditioning and Refrigeration Engineering, Vol 23, No. 9, pp. 610-619. https://doi.org/10.6110/KJACR.2011.23.9.610
  5. Moon, H. J., and Kim, J. W., 2015, An Experimental Study on the Performance of a VRF Air Conditioning System with a Thermal Comfort Control Algorithm, Journal of KIAEBS, Vol. 9, No. 3, pp. 247-252.
  6. Lee, K. H., 2016, Performance Curve Generation of Direct Expansion Air Handling Unit-Variable Refrigerant Flow System, SAREK Magazine, Vol. 45, No. 12, pp. 14-18.
  7. Soong, Y. H., 2010, Heat Pump Technology Trends in High-Rise Houses, Journal of the SAREK, Vol. 39, No. 6, pp. 14-21.
  8. EnergyPlus, EnergyPlus Input output reference, The encyclopedic reference to EnergyPlus input and output; 2016.
  9. Florida Solar Energy Center, Creating performance Curves for variable Refrigerant Flow Heat Pumps in EnergyPlus, 2012.