Suppose that an ideal gas diesel engine comprises the following four processes: 1-2: polytropic compression with n = 9/7, p1 = 1.5 bar, p2 = 53 bar, v1/v2 = 16, v1 – v2 = 14 l 2-3: isobaric expansion, v3/v2 = 2.795 3-4: polytropic expansion with n = 9/7 4-1: isometric heat output (a) determine the unknown state variables, v1, v2, v3, v4, p3, and p4, (b) plot the p-v diagram on the axes provided. clearly label each state on the plot and clearly draw the path between each state.

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