Engineering science N2 & N3 heat energy example

Описание к видео Engineering science N2 & N3 heat energy example

Kw A Nation.
Engineering science N2.
Engineering science N3.
Heat energy.
Question on heat gain and fuel.

Water is heated from 18°C to 80°C within 1 hour. 13kg fuel with a heat value of 30MJ/kg is used. Take the specific heat capacity of water as 4.2kJ/kg.°C. Suppose that no heat energy is lost.
Calc.
a) the temperature change
b) the heat energy given off by the fuel
C) the amount of water heated.

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