Question

A) 1 kg of air with a pressure of 13 bar and a temperature of 125 ° C is heated as isobar up to 550 ° C.
a) Work done during heating,
b) Internal energy and enthalpy change,
c) Calculate the amount of heat consumed. (R = 287 j / kgK, x = 1,4)

B) An ideal gas with a pressure of 1 bar and a volume of 0.5m³ is compressed isothermally up to 17 bar pressure. Calculate the volume of air at the end of compression, work and heat exchange. (R = 287 j / kgK, x = 1,4)

C) 1 kg of air with a pressure of 1 bar and a temperature of 120 ° C is compressed up to 15 bar pressure adiabatically.
a) Temperature and specific volume at the end of compression,
b) Compression job,
c) Internal energy and enthalpy change,
d) Calculate heat exchange. (R = 287 j / kgK, x = 1,4)

Answer 1