Problem 5.024 a power cycle receives 1000 btu by heat transfer from a reservoir at 1500°f and discharges energy by heat transfer to a reservoir at 300°f. the thermal efficiency of the cycle is 75% of that for a reversible power cycle operating between the same reservoirs. (a) for the actual cycle, determine the thermal efficiency and the energy discharged to the cold reservoir, in btu b. repeat for the reversible cycle.

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