What is the ua value of a finned coil evaporator having the following areas: refrigerant side, 15 m2; air side prime, 13.5 m2, and air side extended 144 m2? the refrigerant-side heat transfer coefficient is 1300 w/m2.k and the air side coefficient is 48 w/ m2.k. the fin effectiveness is 0.64

Two technicians are discussing the intake air temperature (iat) sensor. technician a says that the computer uses the iat sensor as a backup to the engine coolant temperature (ect) sensor. technician b says that the powertrain control module (pcm) will subtract the calculated amount of fuel if the air measures hot. who is correct

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

Fluids at rest possess no flow energy. a)- true b)- false