q3 for a university building steam at 150 c for heating is supplied fr
Q3 For a university building, steam at 150°C for heating is supplied from a remote boiler
house through a 35m length of insulated pipe over the road at first floor level. The
pipe has an inside diameter of 0.15m with a wall thickness of 10mm and conductivity
of 48 W/(m.K). The insulation is 50 mm thick with a conductivity of 0.87 W/(m.K).
(a) State Fourier's law of conduction for an infinitely long cylinder and define the
(b) Calculate the heat loss when the atmospheric temperature is -5°C and the heat
transfer coefficients between the steam and pipe and from the insulation to the
atmosphere are 2.84 and 34.1 kW/(m2.K) respectively
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