TY - JOUR
T1 - Comparison on the transient cooling performances of hybrid ground-source heat pumps with various flow loop configurations
AU - Lee, Joo Seong
AU - Song, Kang Sub
AU - Ahn, Jae Hwan
AU - Kim, Yongchan
N1 - Funding Information:
This work was supported by the Industrial Core Technology Development Program (No. 10049090 ) of the Korea Evaluation Institute of Industrial Technology funded by the Korea Government Ministry of Trade, Industry and Energy and the Human Resources Development Program (No. 20124010203250 ) of the Korea Institute of Energy Technology Evaluation and Planning (KETEP) grant funded by the Korea Government Ministry of Trade, Industry and Energy.
PY - 2015/3/15
Y1 - 2015/3/15
N2 - A HGSHP (hybrid ground-source heat pump) is proposed to solve the performance degradation of the GSHP (ground-source heat pump) under imbalanced load conditions. The HGSHP is composed of three flow loops: a refrigerant flow loop, a GFL (ground flow loop), and a SFL (supplemental flow loop). In this study, the transient performance characteristics of the HGSHP were measured and analyzed in the cooling mode at various flow loop configurations, including the HGSHPS (HGSHP with the serial configuration) and HGSHPP (HGSHP with the parallel configuration), and GSHP. During the hybrid operation, the HGSHPS showed relatively higher COP (coefficient of performance) than the HGSHPP due to the lower heat accumulation in the ground under the degraded ground thermal condition. In addition, under the steady state condition, the COPs in the HGSHPS and HGSHPP were 15% and 7% higher, respectively, than that in the GSHP.
AB - A HGSHP (hybrid ground-source heat pump) is proposed to solve the performance degradation of the GSHP (ground-source heat pump) under imbalanced load conditions. The HGSHP is composed of three flow loops: a refrigerant flow loop, a GFL (ground flow loop), and a SFL (supplemental flow loop). In this study, the transient performance characteristics of the HGSHP were measured and analyzed in the cooling mode at various flow loop configurations, including the HGSHPS (HGSHP with the serial configuration) and HGSHPP (HGSHP with the parallel configuration), and GSHP. During the hybrid operation, the HGSHPS showed relatively higher COP (coefficient of performance) than the HGSHPP due to the lower heat accumulation in the ground under the degraded ground thermal condition. In addition, under the steady state condition, the COPs in the HGSHPS and HGSHPP were 15% and 7% higher, respectively, than that in the GSHP.
KW - COP (coefficient of performance)
KW - Ground heat exchanger
KW - Ground thermal condition
KW - Heat accumulation
KW - Hybrid ground-source heat pump
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U2 - 10.1016/j.energy.2015.01.076
DO - 10.1016/j.energy.2015.01.076
M3 - Article
AN - SCOPUS:84926169042
SN - 0360-5442
VL - 82
SP - 678
EP - 685
JO - Energy
JF - Energy
ER -