Question
In: Mechanical Engineering
Moist air initially at T1 = 140°C, p1 = 4 bar, and relitive humidity = 74%...
Moist air initially at T1 = 140°C, p1 = 4 bar, and relitive humidity = 74% is contained in a 2.0-m3 closed, rigid tank. The tank contents are cooled to T2 = 35°C.
Determine the temperature at which condensation begins, in °C
Solutions
samet mamat answered 3 years agoRelated Solutions
Air at T1 = 32°C, p1 = 1 bar, 50% relative humidity enters an insulated chamber...
Air at T1 = 32°C, p1 = 1
bar, 50% relative humidity enters an insulated chamber operating at
steady state with a mass flow rate of 3 kg/min and mixes with a
saturated moist air stream entering at T2 =
7°C, p2 = 1 bar. A single mixed stream exits at
T3 = 17°C, p3 = 1 bar.
Neglect kinetic and potential energy effects
A) Determine mass flow rate of the moist air entering at state
2, in kg/min. (Answer...
At atmospheric pressure, moist air at T1 = 35°C and 40% relative humidity enters a heat...
At atmospheric pressure, moist air at T1 = 35°C and 40% relative
humidity enters a heat exchanger operating at steady state and is
cooled at constant pressure to 24°C with a m with dot on top of 11
kg/min. Ignoring kinetic and potential energy effects, determine:
(a) Properties at state 1: (10 points) Mixture enthalpy, Humidity
ratio (b) Properties at state 2: (15 points) Mixture enthalpy,
relative humidity, humidity ratio (c) the dew point temperature at
the inlet, in °C...
Moist air enters an air-conditioning system as shown in the figure below at T1 = 28°C,...
Moist air enters an air-conditioning system as shown in the
figure below at T1 = 28°C,
?1 = 85% and a volumetric flow rate of
(AV)1 = 0.89 m3/s. At the exit of
the dehumidifying section, the air is saturated,
?2 = 100%, and the condensate leaves this
section at the same temperature as the moist air. At the exit of
the heating section the moist air is at T3 =
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Moist air enters an adiabatic humidifier system at 1 atm, 15 °C, with a relative humidity...
Moist air enters an adiabatic humidifier system at 1 atm, 15 °C,
with a relative humidity of 20%. The volumetric flow rate of the
incoming moist air is 150 m3/min. Saturated water vapor at 1 atm is
injected into the flow such that the outlet temperature is 30 °C
and the outlet relative humidity is 40%. The pressure is constant
in the humidifier system. Determine the mass flow rate of the
saturated water vapor entering the humidifier at state 3,...
Moist air at 30 °C and 50% relative humidity enters a dehumidifier operating at steady state...
Moist air at 30 °C and 50% relative humidity enters a
dehumidifier operating at steady state with a mass flow rate of
319.35 kg/min. The moist air passes over a cooling coil and water
vapor condenses. Condensate (condensed water) exits at 10 °C.
Saturated moist air exits in a separate stream at the same
temperature. The pressure remains constant at 1 bar. Determine (a)
the rate at which water is condensed, in kg/min, and (b) the heat
transfer rate during...
Air undergoes a polytropic process in a piston–cylinder assembly from p1 = 1 bar, T1 =...
Air undergoes a polytropic process in a piston–cylinder assembly
from p1 = 1 bar, T1 = 295 K to p2 = 7 bar. The air is modeled as an
ideal gas and kinetic and potential energy effects are negligible.
For a polytropic exponent of 1.4, determine the work and heat
transfer, each in kJ per kg of air, (1) assuming constant cv
evaluated at 300 K. (2) assuming variable specific heats.
Air undergoes a polytropic process in a piston–cylinder assembly from p1 = 1 bar, T1 =...
Air undergoes a polytropic process in a piston–cylinder assembly
from p1 = 1 bar, T1 = 295 K
to p2 = 3 bar. The air is modeled as an ideal
gas and kinetic and potential energy effects are negligible.
For a polytropic exponent of 1.2, determine the work and heat
transfer, each in kJ per kg of air,
(1) assuming constant cv evaluated at 300
K.
(2) assuming variable specific heats.
Air undergoes a polytropic process in a piston–cylinder assembly from p1 = 1 bar, T1 =...
Air undergoes a polytropic process in a piston–cylinder assembly
from p1 = 1 bar, T1 = 295 K to p2 = 3 bar. The air is modeled as an
ideal gas and kinetic and potential energy effects are negligible.
For a polytropic exponent of 1.6, determine the work and heat
transfer, each in kJ per kg of air, (1) assuming constant cv
evaluated at 300 K. (2) assuming variable specific heats.
Air undergoes a polytropic process in a piston–cylinder assembly from p1 = 1 bar, T1 =...
Air undergoes a polytropic process in a piston–cylinder assembly
from p1 = 1 bar, T1 = 295 K
to p2 = 9 bar. The air is modeled as an ideal
gas and kinetic and potential energy effects are negligible.
For a polytropic exponent of 1.2, determine the work and heat
transfer, each in kJ per kg of air,
(1) assuming constant cv evaluated at 300
K.
(2) assuming variable specific heats.
W/m = -187.211 kJ/kg
Q/m= -93.563 kJ/kG
Determine the...
There are 10 m3/s of moist air at 22C and relative humidity of 50% that enter...
There are 10 m3/s of moist air at 22C and relative humidity of
50% that enter a
heating element until its temperature becomes 35C. Determine the
amount of
heat required and the final %Rh of the air.
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