Liquid water at 300 kpa and 20°c is heated in a chamber by mixing it with superheated steam at 300 kpa and 300°c. cold water enters the chamber at a rate of 1.8 kg/s. if the mixture leaves the mixing chamber at 60°c, determine the mass flow rate of the superheated steam required.

How to increase the thermal officiency of an ideal simple rankino cycle? among these methods, which one is the best and why?

Estimate the change in specific internal energy au and specific enthalpy h from inlet to outlet for ethylene glycol (a liquid) flowing through each of the following devices: (a) a heat exchanger where the glycol temperature increases from 20 °c to 80 °c; (b) a pump operating at about 25 °c and increasing the glycol pressure from 100 kpa to 8 mpa.

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