Given data: COP = 5 Q = 2 TR = 2 × 3.5 = 7 kW No. of air conditioners= 8 t = 4 hrday Calculate: energy consumed in one month = ? Solution: COP = Q W power input W = Q COP = 7 × 8 5 = 11.2 kW Energy consumption in one month = Power × no.of hours × days = 11.2 × 4 × 30 = 1344 kWhr