Abstract:
Experimental studies on Residential Split AC Water Heater
(RSACWH) by replacing refrigerant R-22 with HCR-22
(hydrocarbon refrigerants) as a drop-in substitute has been carried
out. The dummy condenser (trombone type coil) as heat recovery
system was used for heating water and installed in the water tank
with 50 L capacity. The use of HCR-22 save electrical energy due
to decrease in compressor power about 16.31% - 21.64% of the
R-22, because HCR-22 refrigerant mass charge in the
refrigeration system 40% less than the charge of R-22. The
cooling capacity and heat rejection capacity is relatively the same
for R-22 and HCR-22. The COPR increases around 11.89% -
18.69% and COPR + HP also increases around 4.26%-11.41% for
HCR-22 compared to R-22. The room temperature with HCR-22
is relatively the same compared to R-22, while the hot water
temperature using HCR-22 and R-22 are about 46.58°C-48.81°C
and 59.50°C-63.40°C respectively. The use of the HCR-22
provides electrical energy savings for compressor power and
better performance (COP) at similar room temperature compared
to R-22.
