Question

a cylinder of 8 cm inside diameter having a piston loaded

with a spring (stiffness = 150 N/cm of compression). The initial pressure, volume and tempera￾ture of air in the cylinder are 3 × 105 N/m2, 0.000045 m3 and 20°C respectively. Determine the

amount of heat added to the system so that piston moves by 3.5 cm.

Assume cv = 0.71 kJ/kg K and R = 0.287 kJ/kg K.

Answer 1

In conclusion, we find that the amount of heat added to the system is 0.2495 kJ or 249.5 J

Reference

• Rajput, R. K. (2005). Thermal engineering. Firewall Media.