(Solution) If You Are At A Dry Bulb Temperature Of 100 Degrees F And A Dew Point Of 73 Degrees F, Find : A) Wet Bulb Temperature = .degrees F B) Relative... | Snapessays.com


(Solution) If you are at a dry bulb temperature of 100 degrees F and a dew point of 73 degrees F, find : a) Wet Bulb Temperature = .degrees F b) Relative...


1.

 

If you are at a dry bulb temperature of 100 degrees F and a dew point of 73 degrees F, find :

 

 

a) Wet Bulb Temperature = ...degrees F

 

b) Relative Humidity = ...%

 

c) Enthalpy = ...Btu/lbs DA

 

d) Humidity Ratio = ...lbs H2O/lbs DA

 

e) Specific Volume = ...ft3/lbs DA

 

f) Absolute Humidity = ...lbs H2O/ft3

 

 

2.

 

If you are at a dry bulb temperature of 20 degrees C and 60% relative humidity, find :

 

 

a) Wet Bulb Temperature = ...degrees C

 

b) Dew Point Temperature = ...degrees C

 

c) Enthalpy = ...kJ/kg

 

d) Humidity Ratio = ...kg H2O/kg DA

 

e) Specific Volume = ...m3/kg DA

 

f) Absolute Humidity = ...kg H2O/m3 DA

 

 

3.A swine nursery building is being designed to hold 300 pigs weighing 50 pounds each. Water vapor production in the building (from animal respiration and evaporation from wet surfaces) is expected to be 40.2 lbs H2O/hr. Outside air at 30 degrees F dry bulb and 50% RH is to be blown through a fan into the building. The air inside the building is to be at 65 degrees F dry bulb and 70% RH. Find: A) Volumetric flow rate (cfm) of air that the fan should move to remove moisture from the building, and B) The rate at which heat (BTU/hr) will be removed from the building in the ventilation air.

 

 

Flow Rate = ...cfm

 

 

Heat Removal Rate = ...Btu/hr

 

 

4.A producer has a barn for sheep and lambs. The producer wants to use evaporative cooling to cool the barn. If the outside air has a dry bulb temperature of 90 degrees F and a relative humidity of 40%, what is the lowest temperature that the producer can get using the evaporative cooler?

 

 

Lowest Temperature = ....degrees F

 

 

5.

 

Assume you need to remove 10,000 lbs of water from grain. If you blow 5000 cfm of air at 100 F and 10% RH over the grain and the air exits at 90% RH, how long will it take to remove all the water?

 

 

Time to evaporate = ...Hours

 

 

6.

 

Find the increase in moisture per pound of dry air when going from 42 degrees F dry bulb and 35 degrees F wet bulb to air with 72 degrees F dry bulb and 63 degrees F wet bulb.

 

 

Moisture Increase = ...lbs H2O/lbs DA

 

 

7.Determine the amount of heat that must be removed to cool 20 pounds of air at 40 degrees C and 20% to 20 degrees C.

 

 

Heat Removed = ...kJ of Heat

 


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This question was answered on: May 23, 2022

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