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A flow of 1 kg/s saturated moist air at 100 kPa, 10oC goes through a heat exchanger. What are the exit relative humidity and the heat transfer?
All flows are at 150 kPa, the same as the total exit pressure. Compute the exit temperature and the rate of entropy generation in the process.
Any heat transfer is with the surroundings at 20oC. Is an electrical power input of 3000 kW sufficient to drive this unit?
Find the exit temperature and the rate of entropy generation. Find the exit temperature and the total entropy generation per kilogram of the exit mixture.
Find any flow of liquid and the necessary heat transfer, both per kilogram of dry air flowing. Find the dew point for the final mixture.
The remaining liquid water flows back to the condenser at 30oC, having given off 1 MW. Find the mass flow rate of air and the amount of water that evaporates.
Find the temperature T2, the mass of liquid per kilogram of dry air, and the overall heat transfer rate.
Find the dew point of the inside air, the relative humidity at the end of the channel, and the heat transfer in the channel.
The outdoor ambient is at 10oC, 100 kPa, 50% relative humidity. What are the required liquid water input and heat transfer rates for this purpose?
Neglect the volume of any liquid that might be present and find the final mass of water vapor, the final total pressure, and the heat transfer.
Find the temperature and relative humidity after mixing. Find the heat transfer and the final exit relative humidity.
Find the dew point of the atmospheric air, specific humidity of air onto the windshield, the lowest temperature, and the specific heat transfer in the cooler.
An air conditioner for an airport receives desert air at 45oC, 10% relative humidity. What should be done to air? Find needed heating/cooling per kg dry air.
For each case, explain what happens to the exergy, whether there is any exergy destruction, and whether the composition is needed.
Find the specific and relative humidity for state 1 the dew point for state 2, and the heat transfer per kg dry air in each component in the system.
For both cases, find the exit relative humidity and the amount of heat transfer per kilogram of dry air.
Explain how to meter the inlet flows to ensure the proper ratio, assuming inlet pressures are equal to the total exit pressure and all temperatures are the same
Explain in words what the absolute and relative humidity express. In which direction does an adiabatic saturation process change F, ?, and T?
What happens to relative and absolute humidity when moist air is heated? What happens to relative and absolute humidity when moist air is cooled?
Are the mass and mole fractions for a mixture ever the same? For a mixture, how many component concentrations are needed?
Find the fuel fraction on a mass basis and the fuel mass for a chamber that is 0.5 L at 800 K and has a total pressure of 4000 kPa.
For that time, find the partial pressure of the octane and the specific volume of the mixture.
A slightly oxygenated air mixture is 69% N2, 1% Ar, and 30% O2 on a mole basis. Find the mass fraction of oxygen and its partial pressure.
A mixture of 60% N2, 30% Ar, and 10% O2 on a mass basis is in a cylinder at 250 kPa, 310 K. Find the mole and the mass fractions and the mass of argon.
A 3-L liquid mixture is one-third each of water, ammonia, and ethanol by volume. Find the mass fractions and total mass of the mixture.