An adiabatic heat exchanger uses saturated steam to heat water flowing at 60 kg/s from 40℃ to 90℃. The steam exits the heat exchanger at a rate of 5 kg/s as a liquid at atmospheric pressure. If the inlet
pressure is 200 kPa, calculate the:
a) Energy gained by the saturated water using enthalpies.
b) Enthalpy of the inlet steam and the steam quality.

Afan that can provide air speeds up to 60 m/s is to be used in a low-speed wind tunnel with atmospheric air at 35 c. if one wishes to use the wind tunnel to study flat-plate boundary layer behavior up to reynolds numbes of re 10, what is the minimum plate length that should be used? at what distance from the leading edge would transition occur if the critical reynolds nurnber were rer,e = 5 × 105?

List and describe in sequence the operation process steps for boxf machine?

An air-conditioning system consists of a heating section and an evaporative cooler. air enters the heating section at 10°c and 70 percent relative humidity at a rate of 30m^3/min, and it leaves the evaporative cooler at 20°c and 60 percent relatively humidity. if the air conditioning system operates at a total pressure of 98 kpa, determine (a) the temperature and relative humidity of the air when it leaves the heating section, (b) the rate of heat transfer in the heating section, and (c) the rate of water added to air in the evaporative cooler