An ideal gas expands in an adiabatic turbine from 1200 k and 900 kpa to 800 k. determine the turbine inlet volume flow rate of the gas, in m'/s, required to produce turbine work output at the rate of 650 kw. the average values of the specific heats for this gas over the temperature range and the gas constant are op 1.13 kj/kg. k, v 0.83 kj/kg k, and r 0.30 kj/kg k

Apipe with an outside diameter of 15 cm is exposed to an ambient air and surrounding temperature of -20°c. the pipe has an outer surface temperature of 65°c and an emissivity of 0.85. if the rate of heat loss from the pipe surface is 0.95 kw per meter of length, the external convective heat transfer coefficient (h) is: (a) 12.5 w/m"k (b) 18.6 w/mk (c) 23.7 w/mk (d) 27.9 w/mk (e) 33.5 w/mk