| dc.description.abstract | Freezer is one of the household refrigeration systems which is useful for
storing food such as meat and fish. The way to extend the storage time of fish is to
keep it in the freezer or refrigerator, which can inhibit the growth of bacteria, and
fish can be preserved for a long time. R-134a refrigerant is currently known as a
synthetic refrigerant and is the most commonly used type of refrigerant in freezers.
Research shows that R-134a refrigerant may contribute to global warming. The
purpose of this research is to analyze the performance of the freezer, namely the
heat absorbed by the evaporator, the mass flow rate of the refrigerant, the
compressor work, the heat released by the condenser and the coefficient of
performance (COP). Then analyze the comparison of freezing performance with R134a and R-600a refrigerants. Several variables are used in this study. The
independent variables include R-134a and R-600a refrigerants. For the dependent
variables, namely, low pressure and high pressure, evaporator temperature and
condenser temperature. And for the control variables, namely, fish temperature at -
5 °C and compressor speed interval of 1000, 1200, 1500 and 2000 rpm. The results
of vapor compression cycle analysis calculation on freezer performance obtained
with R-134a and R-600a refrigerants, heat absorbed by evaporator, refrigerant
mass flow rate, compression work, heat released by condenser are higher for R134a than R-600a. An increase was found up to 1500 rpm and the results of SKU
analysis calculation for COP for R-600a were higher than R-134a | en_US |
