Analisa Perubahan Fase Refrigeran R-134a dengan Heat Flux Konstan pada Evaporator

Abstract

Analysis of R-134a refrigerant phase change with constant heat fluks in evaporator has been done. The aims are to determine the effect of constant heat flux to the refrigerant phase change that occurs in the evaporator. Research will be conducted to measure the pressure and temperature of the input/output evaporator. Then, searching properties with tables and refrigerant phase change diagrams. The magnitude of these properties shows that there are changes in phase on the evaporator. The influence of the heat flux will be analyzed at some point in the evaporator in order to know the beginning and end of the phase change in the evaporator. With the addition of heat flux changes will take place early phase and ends more quickly than without the addition of heat flux. This of course will affect the length of the evaporator. So will add to the efficiency of use of the pipe material evaporator. Analysis was also conducted to calculate the maximum temperature that occurs in the evaporator pipe so that it can be seen how the age limit of the evaporator material.

Keywords : Phase change, Heat flux, Evaporator