Browse > Article
http://dx.doi.org/10.6110/KJACR.2014.26.9.409

Performance Prediction on the Application of a Ground-Source Heat Pump(GSHP) System in an Office Building  

Sohn, Byonghu (Green Building Research Division, Korea Institute of Construction Technology)
Kwon, Han Sol (Green Building Research Division, Korea Institute of Construction Technology)
Publication Information
Korean Journal of Air-Conditioning and Refrigeration Engineering / v.26, no.9, 2014 , pp. 409-415 More about this Journal
Abstract
Ground-source heat pump (GSHP) systems have become an efficient alternative to conventional cooling and heating methods due to their higher energy efficiency. These systems use the ground as a heat source and the heat sink for cooling mode operation. The purpose of this simulation study is to evaluate the performance of a hypothetical GSHP system in an office building and to assess the energy saving effect against the existing HVAC systems (boiler and turbo chiller). We collected monthly energy consumption data from an actual office building ($32,488m^2$) in Seoul, and created a model to calculate the hourly building loads with EnergyPlus. In addition, we used GLD (Ground Loop Design) V8.0, a GSHP system design and simulation software tool, to evaluate hourly and monthly performance of the GSHP system. The energy consumption for the GSHP system based on the hourly simulation results were estimated to be 582.6 MWh/year for cooling and 593.2 MWh/year for heating, while those for the existing HVAC systems were found to be 674.5 MWh/year and 2,496.4 MWh/year, respectively. The seasonal performance factor (SPF) of the GSHP system was also calculated to be in the range of 3.37~4.28.
Keywords
Ground-source heat pump system; Office building; Performance prediction; Simulation; EnergyPlus; Cooling and heating;
Citations & Related Records
Times Cited By KSCI : 4  (Citation Analysis)
연도 인용수 순위
1 Eskilson, P., 1987, Thermal analysis of heat extraction boreholes, Ph.D. thesis, University of Lund, Lund, Sweden.
2 Kavanaugh, S. P. and Rafferty, K., 1997, Groundsource heat pumps : Design of geothermal systems for commercial and institutional buildings, ASHRAE, Atlanta.
3 Priority Metrics Group, 2009, Industry insights reportenergy beneath the backyard : The global geothermal heat pump market 2009, Priority Metrics Group.
4 Pahud, D. and Hellstrom, G., 1996, The new duct ground model for TRNSYS, Proceedings, Eurotherm Seminar 49, Eindhoven, Netherlands, pp. 127-136.
5 Yavuzturk, C. and Spitler, J. D., 1999, A short time step response factor model for vertical ground loop heat exchangers, ASHRAE Transactions, Vol. 105, pp. 475-485.
6 Yavuzturk, C. and Spitler, J. D., 2001, Field validation of a short time step model for vertical ground loop heat exchangers, ASHRAE Transactions, Vol. 107, pp. 617-625.
7 Gao, J., Zhang, X., Liu, J., Li, K. S., and Yang, J., 2008, Thermal performance and ground temperature of vertical pile-foundation heat exchangers : a case study, Applied Thermal Engineering, Vol. 28, No. 17-18, pp. 2295-2304.   DOI   ScienceOn
8 Sohn, B. H., Cho, C. S., Shin, H. J., and An, H. J., 2005, Cooling and heating performance evaluation of a GSHP system, Korean Journal of Air-Conditioning and Refrigeration Engineering, Vol. 17, No. 1, pp. 71-81   과학기술학회마을
9 Sohn, B., Choi, J. M., and Choi, H. S., 2011, Performance simulation of ground-coupled heat pump(GCHP) system for a detached house, Korean Journal of Air- Conditioning and Refrigeration Engineering, Vol. 23, No. 6, pp. 392-399.   과학기술학회마을   DOI
10 Nam, Y. J., 2013, Numerical analysis of the effect of ground source heat pump systems on the underground temperature, Korean Journal of Air-Conditioning and Refrigeration Engineering, Vol. 25, No. 8, pp. 427-411.   과학기술학회마을   DOI
11 Henninger, R. H. and Witte, M. J., 2011, EnergyPlus energy simulation software : Testing and validation, US Department of Energy, Building Technology Program, US DOE.
12 NREL, 2013, Openstudio-commercial buildings research and software development, NREL.
13 Gaia Geothermal, 2014, Ground loop design-geothermal design studio User's manual, Gaia Geothermal.
14 Shonder, J. A., Baxter, V., Thornton, J., and Hughes, P., 1999, A new comparison of vertical ground heat exchanger design methods for residential applications, ASHRAE Transactions, Vol. 105, pp. 1179-1188.
15 Sohn, B., 2012, Evaluation of ground effective thermal properties and effect of borehole thermal resistance on performance of ground heat exchanger, Transactions of the Korea Society of Geothermal Engineers, Vol. 8, No. 4, pp. 32-40.   과학기술학회마을
16 US DOE, 2008, M&V Guidelines : Measurement and verification for Federal energy projects V.3.0, US Department of Energy.