Laidler_Activity07
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School
University of Central Oklahoma *
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Course
1024
Subject
Aerospace Engineering
Date
Dec 6, 2023
Type
Pages
3
Uploaded by JudgeEnergy10284
Lab.7 : MEASURING HUMIDITY FLUIDS
Name: John Laidler
Student ID: 20521831
ORIGINAL DATA AND OBSERVATIONS
Air temperature and wind chill
●
Place a thermometer in the air and leave it for several minutes. Record
the temperature
22 degrees Celsius
●
If the thermometer were waved around in the air, do you think that the
temperature would:
I would assume that the temperature would remain constant, as I
think of the weather’s “wind chill” versus standard temperature.
●
Now carefully wave the thermometer. What happens to the
temperature?
The temperature remains the same.
Measuring relative humidity by evaporation
●
Set the thermometer down so that the tip rests on the Styrofoam pad.
Record the temperature wet-bulb temperature:
Part I temp: 22 degrees Celsius
Part II temp: 19.9 degrees Celsius
●
Explain why the temperature a) changed or b) stayed the same.
The temperature changed due to evaporation. Since this energy
escaped from the styrofoam during the process, the temperature
decreased.
●
If the room had been very humid, saturated with a relative humidity of
around 100%, would the temperature have gone down very much?
(Explain)
In this situation, the temperature would not have experienced
substantial decrease as evaporation would have occurred at a
slower rate.
●
If the room had been very dry, with a relative humidity of around 0.0%,
would the temperature have gone down very much?(Explain)
In this situation, the temperature would have experienced a
greater decrease as the lower ambient humidity would entail
faster evaporation.
Relative humidity:
83%
Measuring relative humidity by condensation
●
Carefully wave the thermometer to determine the air temperature.
Record your measurement
22 degrees Celsius
●
Dew-point temperature:
8.4 degrees Celsius
●
Relative Humidity.
40%
●
How does this Relative Humidity compare to the one you found using
method 1?
The observed relative humidity in the latter portion of the activity
was substantially less than that of the beginning portion.
CONCLUSIONS
This activity demonstrated that temperature measurements remain
constant regardless of wind chill. For example, the thermometer would have
read 22 degrees Celsius whether or not it was “waved”. Furthermore,
humidity and rate of evaporation are inversely proportional. This was
expressed within my responses which explained that evaporation occurs at a
slower rate within more humid environments, and vice versa.
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