Refrigerant 134a is the working fluid in a solar power operating on a Rankine cycle. Saturated vapor at (61+0.3*A) o C enters the turbine, and condenser operates at a pressure of 6 bar. The rate of energy input to collectors from solar radiation is 0.4 kW per m2 of collector surface area. Determine the minimum possible solar collector surface area in m2 , per kW of power developed by the plant.

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