An hotel has 100 double bedrooms, requires 35 litre of domestic hot water storage per guest in an indirect cylinder heated from 11^oC to 65^oC in 6 hours. What is the exact heater power consumed?

Question

Quizplus · Accepted Answer

To calculate the heater power, use the formula: Power (kW) = (mass of water * specific heat capacity * temperature change) / time. Here, mass = 100 rooms * 2 guests/room * 35 L/guest = 7000 L = 7000 kg (since 1 L of water = 1 kg), specific heat capacity = 4.18 kJ/kg°C, temperature change = 65°C - 11°C = 54°C, and time = 6 hours = 21600 seconds. Power = (7000 * 4.18 * 54) / 21600 = 73.25 kW.

An Hotel Has 100 Double Bedrooms, Requires 35 Litre of Domestic