TY - GEN
T1 - Refrigerant charge optimization of a dual sorurce heat pump using the ground and water source
AU - Lee, J.
AU - Kim, Yong Chan
AU - Oh, M.
AU - Park, H.
PY - 2012
Y1 - 2012
N2 - The objective of this paper is to optimize the refrigerant charge amount of a dual source heat pump (DSHP) system using the ground and water as heat sinks. The system has two refrigerant flow paths in the condenser composed of two condensing plate heat exchangers (PHEX) in the cooling mode, which are a bypass flow path and a non-bypass flow path. The DSHP was tested by varying the refrigerant charge amount from 1800 g to 3000 g in 300 g increments with the bypass flow path and non-bypass flow path in a single source heat pump (SSHP) mode, while maintaining entering water temperature (EWT) for the evaporator and condenser at 12°C and 25°C, respectively. In the DSHP operation mode, the optimum charge test was conducted at 12°C and 35°C of the EWT for the evaporator and the condenser, respectively. The optimum charge amounts of the bypass flow path and the non-bypass flow path were 2400g and 2100g in the SSHP mode, respectively. The optimum charge amount for the DSHP mode (1800 g) was relatively lower than that for the SSHP mode. The optimum charge amount of the DSHP system should be determined in the non-bypass flow path of the SSHP mode.
AB - The objective of this paper is to optimize the refrigerant charge amount of a dual source heat pump (DSHP) system using the ground and water as heat sinks. The system has two refrigerant flow paths in the condenser composed of two condensing plate heat exchangers (PHEX) in the cooling mode, which are a bypass flow path and a non-bypass flow path. The DSHP was tested by varying the refrigerant charge amount from 1800 g to 3000 g in 300 g increments with the bypass flow path and non-bypass flow path in a single source heat pump (SSHP) mode, while maintaining entering water temperature (EWT) for the evaporator and condenser at 12°C and 25°C, respectively. In the DSHP operation mode, the optimum charge test was conducted at 12°C and 35°C of the EWT for the evaporator and the condenser, respectively. The optimum charge amounts of the bypass flow path and the non-bypass flow path were 2400g and 2100g in the SSHP mode, respectively. The optimum charge amount for the DSHP mode (1800 g) was relatively lower than that for the SSHP mode. The optimum charge amount of the DSHP system should be determined in the non-bypass flow path of the SSHP mode.
UR - http://www.scopus.com/inward/record.url?scp=84903280042&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:84903280042
SN - 9781632660152
T3 - 6th Asian Conference on Refrigeration and Air Conditioning, ACRA 2012
SP - 536
EP - 540
BT - 6th Asian Conference on Refrigeration and Air Conditioning, ACRA 2012
PB - Chinese Association of Refrigeration (CAR)
T2 - 6th Asian Conference on Refrigeration and Air Conditioning, ACRA 2012
Y2 - 26 August 2012 through 28 August 2012
ER -