Question
In: Advanced Math
Humid air at 155 kPa, 40°C, and 70 percent relative humidity is cooled at constant pressure...
Humid air at 155 kPa, 40°C, and 70 percent relative humidity is cooled at constant pressure in a pipe to its dew-point temperature. Calculate the heat transfer, in kJ/kg dry air, required for this process. Use data from the tables.
The heat transfer is kJ/kg dry air.
Solutions
Colby Messinger answered 2 years agoRelated Solutions
Humid air at 300 kPa, 10°C, and 90% relative humidity is heated in a pipe at...
Humid air at 300 kPa, 10°C, and 90% relative humidity is heated
in a pipe at constant pressure to 50°C. Calculate the amount of
heat, in kJ/kg dry air, required
Air at 38.0°C and 99.0% relative humidity is to be cooled to 16.0°C and fed into...
Air at 38.0°C and 99.0% relative humidity is to be cooled to
16.0°C and fed into a plant area at a rate of 510.0
m3/min. You may assume that the air pressure is 1 atm in
all stages of the process.
Calculate the rate the water condenses in kg/min.
Chemical Engineering question. Air at 38.0°C and 99.0% relative humidity is to be cooled to 18.0°C...
Chemical Engineering question.
Air at 38.0°C and 99.0% relative humidity is to be cooled to
18.0°C and fed into a plant area at a rate of 710.0
m3/min. You may assume that the air pressure is 1 atm in
all stages of the process.
A.) Calculate the rate at which water condenses in kg/min .
B.) Calculate the cooling requirement in tons (1 ton of cooling
= 12,000 Btu/h), assuming that the enthalpy of water vapor is that
of saturated...
In a device to produce drinking water, humid air at 32C, 90% relative humidity and 1...
In a device to produce drinking water, humid air at 32C, 90%
relative humidity and 1 atm is cooled to 5C at constant pressure.
If the duty on the unit is 2,200 kW of heat is removed from the
humid air.
Data: Air at 32C has H = 0.204 kJ/mol and at 50C has H = -0.576
kJ/mol
H of steam can be found on the steam tables – vapor at 32C and 1
atm; vapor at 5C and liquid...
Atmospheric air, at constant conditions, 102 kPa pressure and 30 ° C to a air conditioning...
Atmospheric air, at constant conditions, 102 kPa pressure and
30 ° C to a air conditioning system
enters at 60% relative humidity at temperature. The volumetric
flow of atmospheric air is 100 L / s. Air,
It is separated from the air conditioning system at a pressure
of 95 kPa and a temperature of 15 ° C at 100% relative
humidity.
In this process, the temperature of the condensing water is 15
° C. This air conditioning
Calculate the heat...
The atmospheric air 32 °C dry bulb temperature and 70% relative humidity supplied to the cooling...
The atmospheric air 32 °C dry bulb temperature and 70% relative
humidity supplied to the cooling coil at a rate of 45m3 /min. The
air cooling to the saturated state and leaving at a temperature of
16 °C. Determine: () a- Specific humidity at each state. b- Wet
bulb and dew point temperatures at the final state c- Final
relative humidity. d- Mass of water condensed. e- Rate of heat
removed from the air in kW. f- Show the process...
The atmospheric air 32 °C dry bulb temperature and 70% relative humidity supplied to the cooling...
The atmospheric air 32 °C dry bulb temperature and 70% relative
humidity supplied to the cooling coil at a rate of 45m3 /min. The
air cooling to the saturated state and leaving at a temperature of
16 °C. Determine: (10 points) a- Specific humidity at each state.
b- Wet bulb and dew point temperatures at the final state c- Final
relative humidity. d- Mass of water condensed. e- Rate of
heat removed from the air in kW. f- Show the...
15 m3 /min of air at 104o F and 60% relative humidity is cooled to 59o...
15 m3 /min of air at 104o F and 60% relative humidity is cooled
to 59o F and 100% relative humidity, and then reheated to 68o F.
Find the following:
a. The flow rate of dry air (BDA) in kg /min.
b. The amount of water condensed during cooling stage.
c. kW of power needed for cooling the air in the cooling
stage.
d. kW of power needed for the heating step.
An air conditioning system is to take outdoor air at 30 oC and 70% relative humidity...
An air conditioning system is to take outdoor air at 30
oC and 70% relative humidity at a steady rate of 10
m3/s and to condition it to 25 oC and 50%
relative humidity. The outdoor air is first cooled down to 13.9
oC using cooling coil and then heated to the desired
condition in the heating section. Assuming the air is at 1 atm
pressure,
Draw the air conditioning process on the attached psychometric
chart.
Determine the mass flow...
Air is at 100 kPa and 150°C, and undergoes a constant pressure process. The final temperature...
Air is at 100 kPa and 150°C, and undergoes a constant
pressure process. The final temperature of the air is 1000°C.
a) Compute the specific volume ratio.
b) Compute the boundary work (kJ/kg)
c) Compute the change in specific internal energy
by:
1. Using the tables.
2. Integrating the polynomial (cp)
3. Assuming constant specific heat.
d) Repeat c for specific enthalpy
e) Compute the heat
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