A steel sphere, at 300°C, holds water at 100 kPa, 300°C. The system (steel plus water) cools to the ambient temperature of 20°C by losing 1988 kJ of heat. During this process the entropy of the steal sphere and water decrease by 3.3 kJ/K and 1.4 kJ/K, respectively. The entropy generation (kJ/K) for this process is most closely equal to:

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