100 cubic meters of carbon dioxide initially at 150 C and 50bar is to be isothermally compressed in a frictionless piston and cylinder device to a final pressure of 300 bar. Calculate:

i. The volume of the compressed gas
ii. The work done to compress the gas
iii. The heat flow on compression assuming carbon dioxide:

a/ Is an ideal gas
b/ Obeys the principle of corresponding states
c/ Obeys the Peng-RObinson equation of 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