Question

QUESTION 1 a) What are extensive and intensive properties? Give some examples (4 marks) b) What are the isothermal and isobaric processes? (4 marks) c) What are the qualities x for saturated liquid and saturated vapor, respectively? (4 marks) d) What is the difference between saturated vapor and superheated vapor? (4 marks)

Answer 1

a ) i) Extensive properties : The properties which dependent on the mass of System under consideration. aire : For exemples : Mass, energy Mass, energy , volume etc. 1 ii) Intensive properties : The properties which are independent of the of system under consideration mass For examples: Pressure, temperature, density 1 viscosity ete. Isothermal The tempreture bl process : constant is calleel isothermal process. (TE) The equation governing the isothermal process process for an ideal gas is PV=c T TC 2 TI=T2 si S2 s

Isobaric process The constant pressure prouss is called isobaric prouess. Y -c (P=C) Po Pac 2 Pi-P2 V V2 V c rig P.V diagram isobaric process c ) At the critical point, the saturated 1 liquid and saturated vapor state ore identical at critical point. The quality x=1

oy Difference between Saturated vapor end superheatedl vapor saturated vapor Superheated vapor L The saturated The Superheated Vapor has no moisture. vapor is vapor with some percentage of moisture. 2: The temperature The vapor has the temperature above and pressure is below the secturation the saturation temperature point. This A vepor that The vapors that 3 . about to concense is not about to is called saturated condense or Napor otherwise is called Superheateel vapor