Wish to correctly size an instant-on hot water heater for a new apartment unit. What is the expected energy requirement of the unit for a maximum water flowrate of 11.6 L/min with a maximum temperature of 61.7 deg. C? We can assume water enters the unit at room temperature (21 deg. C) with a constant heat capacity at these conditions (4.186 J/g/C). Enter your answer with units of kW (for example: "15.5 kW"