Question

Q2. 1200 liters/hour of water is flowing into the electric water heater through a pipe of diameter

15 cm. The water enters at a temperature of 50 ºC and the outlet temperature of the water from

water heater is 85 °C.

a. Determine the velocity of the water flow [2 marks]

b. Determine the mass flow rate of the water [2 marks]

c. Determine the change in the enthalpy of the water [6 marks]

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