The coating has an emissivity of ε=0.7, and the temperatures of the oven and chamber walls are 175oC and 25oC, respectively. If the panel is placed in the oven at an initial temperature of 25oC and removed from the chamber at a safe-to-touch temperature of 37oC, what is the total elapsed time for the two-step curing operation?

On a average work day more than work place firs are reorted

The temperature of air decreases as it is compressed by an adiabatic compressor. a)- true b)- false

Apump is used to circulate hot water in a home heating system. water enters the well-insulated pump operating at steady state at a rate of 0.42 gal/min. the inlet pressure and temperature are 14.7 lbf/in.2, and 180°f, respectively; at the exit the pressure is 60 lbf/in.2 the pump requires 1/15 hp of power input. water can be modeled as an incompressible substance with constant density of 60.58 lb/ft3 and constant specific heat of 1 btu/lb or. neglecting kinetic and potential energy effects, determine the temperature change, in °r, as the water flows through the pump.