Please help me solve this...what i need is how to start this.
Problem;
A refrigeration system employing R134a is operating on an ideal refrigeration cycle with an evaporator temp of 4oC and a condensing temp of 42oC. Determine:
a) Properties at all states 1,2,3 and 4 (this i have done)
b) the refrigerant flow rate in l/s for each kW of refrigeration capacity
c) the theoretical Wattage of the compressor per kW of refrigeration capacity
d) ratio of condenser rejected heat to evaporator extracted heat
e) the COP(ref) of the cycle....

can mail me the worked out details too ...vnangolo@yahoo.com