The prandtl number, npr, is a dimensionless group important in heat transfer calculations. it is defined as cμ/k, where c is the heat capacity of a fluid, μ is the fluid viscosity, and k is the thermal conductivity. for a particular fluid, c=0 583 j/(g c), k =0 286 w/(m c), and μ = 1936 lb /(ft h). estimate the value of without using a calculator (remember, it is dimensionless), showing your calculations; then determine it with a calculator.

The filament of an incandescent lamp has a temperature of 2000k. calculate the fraction of radiation emitted in the visible light band if the filament is approximated as blackbody

What are the two (02) benefits, which may result from a successful implementation of preventive maintenance (pm) program in an organization? (clo3)a)- lean manufacturing b)-overlapping responsibilities c)-the planner is not qualified d)-accurate contractor information e)-reduction in equipment redundancies f)-accurate stores information

Consider a 1.2 meter high and 2 meter wide glass window whose thickness is 6 mm and thermal conductivity is 0.78 w/m °c. the room temperature is maintained at 24 °c, while the outdoor temperature is -5 °c. the convective heat transfer coefficients on the inner and outer surfaces of the window are 10 w/m2 °c and 25 w/m2 °c respectively. (a) draw the thermal resistance network, etermine the steady rate of heat transfer t e glass window (c) determine the temperature of the inner surface of the window