Problems: developing engineering skills 135 water vapor initially at 10 bar and 400 degree c is contained within a piston-cylinder assembly. the water is cooled at constant volume until its temperature is 150 degree c. the water is then condensed isothermally to saturated liquid. for the water as the system, evaluate the work, in kj/kg.

Ahot wire operates at a temperature of 200°c while the air temperature is 20°c. the hot wire element is a tungsten wire of 5 um diameter and 2 mm in length. plot using excel current, heat transfer and heat generated by the wire for air velocity varying from 1-10 m/s in steps of lm/s? matlab the sensor voltage output, resistance, or assume nu 0.989 re033pr13 take air properties at tr (200°c20°c)/2 = 110°c properties of tungsten: c 0.13 kj/kg.k 3 p 19250 kg/m k (thermal conductivity) = 174 w/m.k