Abinary mixture of acetonitrile (1) and nitromethane (2) is assumed to be an ideal mixture. if the overall composition is 60% (1), calculate the following:

i) bubble point pressure and corresponding vapor phase composition at 75oc.

ii) dew point pressure and corresponding liquid phase composition at 75oc.

iii) bubble point temperature and corresponding vapor phase composition at 1 atm.

iv) dew point temperature and corresponding liquid phase composition at 1 atm.

given: ln p1v = 14.27 - 2945.5/(t+224) and ln p2v = 14.2 - 2972.6/(t+206), where t is in oc and p is kpa

The mass flow rate of the fluid remains constant in all steady flow process. a)- true b)- false

Air is to be cooled in the evaporator section of a refrigerator by passing it over a bank of 0.8-cm-outer-diameter and 0.4-m-long tubes inside which the refrigerant is evaporating at -20°c. air approaches the tube bank in the normal direction at 0°c and 1 atm with a mean velocity of 4 m/s. the tubes are arranged in-line with longitudinal and transverse pitches of sl- st 1.5 cm. there are 30 rows in the flow direction with 15 tubes in each row. determine (a) the refrigeration capacity of this system and (b) pressure drop across the tube bank. evaluate the air properties at an assumed mean temperature of -5°c and 1 atm. is this a good assumption?

Give heat transfer applications for the following, (i) gas turbines (propulsion) ) gas turbines (power generation). (iii) steam turbines. (iv) combined heat and power (chp). (v) automotive engines