A conventional vapor$-$compression refrigeration system operates using tetrafluoroethane as the refrigerant. The temperatures of the evaporator and the condenser are $-20C$ and $40C,$ respectively. A throttling valve is used in the expansion process. The compressor efficiency is $70\%.$ If the refrigeration rate is $380k\frac{J}{s},$ calculate the circulation rate of the refrigerant, the heat transfer rate in the condenser, the compression power requirement, the coefficient of performance $($COP$)$ of the cycle. What would be COP if the cycle is operated as a heat pump?