TY - GEN
T1 - A hardware-based heat pump water heater design model for quasi-steady-state simulation
AU - Shen, Bo
AU - Nawaz, Kashif
AU - Elatar, Ahmed
AU - Baxter, Van
N1 - Publisher Copyright:
© 2019 International Institute of Refrigeration. All rights reserved.
PY - 2019
Y1 - 2019
N2 - A storage heat pump water heater (HPWH) comprises a vapor compression system and a hot water tank. It can lead to more than 70% energy saving, compared to electric resistance heating. HPWH usually uses a wrapped-tank coil as the water heater. The wrapped coil has a strong interaction with the water tank and impose a new challenge for the engineering design and simulation study. Based on the US DOE/ORNL Heat Pump Design Model (HPDM), a component-based thermal system modelling platform, a segment-to-segment wrapped-tank coil model and a one-dimensional stratified water tank model were developed, which facilitates modeling and design HPWHs having various configurations and components. In the paper, the new HPWH system design model was used to investigate effects of compressor size, refrigerant charge, water draw pattern, and refrigerant type, etc., for predicting 24-hour energy factors and first-hour rating. The HPWH system model was proved to be an effective equipment design tool.
AB - A storage heat pump water heater (HPWH) comprises a vapor compression system and a hot water tank. It can lead to more than 70% energy saving, compared to electric resistance heating. HPWH usually uses a wrapped-tank coil as the water heater. The wrapped coil has a strong interaction with the water tank and impose a new challenge for the engineering design and simulation study. Based on the US DOE/ORNL Heat Pump Design Model (HPDM), a component-based thermal system modelling platform, a segment-to-segment wrapped-tank coil model and a one-dimensional stratified water tank model were developed, which facilitates modeling and design HPWHs having various configurations and components. In the paper, the new HPWH system design model was used to investigate effects of compressor size, refrigerant charge, water draw pattern, and refrigerant type, etc., for predicting 24-hour energy factors and first-hour rating. The HPWH system model was proved to be an effective equipment design tool.
KW - Heat Pump Water Heater
KW - Low GWP Refrigerant
KW - Modelling
KW - Wrapped-Tank Condenser
UR - http://www.scopus.com/inward/record.url?scp=85082691803&partnerID=8YFLogxK
U2 - 10.18462/iir.icr.2019.0444
DO - 10.18462/iir.icr.2019.0444
M3 - Conference contribution
AN - SCOPUS:85082691803
T3 - Refrigeration Science and Technology
SP - 4310
EP - 4317
BT - ICR 2019 - 25th IIR International Congress of Refrigeration
A2 - Minea, Vasile
PB - International Institute of Refrigeration
T2 - 25th IIR International Congress of Refrigeration, ICR 2019
Y2 - 24 August 2019 through 30 August 2019
ER -