A copper tube of 20 mm outer diameter, 1 mm thickness, and 20 m long (Thermal conductivity = 400W/m.K) is carrying saturated steam at 150 C (Convective HTC = 150 W/m^2.K). The tube is exposed to an ambient temperature of 27 C. The convective HTC of air is 5 W/m^2.K. Glass wool is used for insulation (Thermal conductivity = 0.075 W/m.K). If the thickness of the insulation used is 5 mm higher than the critical thickness of insulation, calculate the rate of heat lost by the steam and the rate of steam condensation in kg/hr (The enthalpy of condensation of steam = 2230 kJ/kg)
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