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68<br />

23<br />

14.8<br />

20.1<br />

20.1<br />

T R = 14.5 ºC<br />

Problem No. 1<br />

• The dry bulb reading is 78° and the wet bulb is 58°.<br />

Using the chart determine the following values. What is<br />

the:<br />

– a. Relative Humidity?<br />

• 28 percent<br />

– b. Dew Point?<br />

• 42 degrees<br />

– c. Absolute Humidity?<br />

• .0056 lbs water/lb dry air<br />

– d. Specific Volume?<br />

• 13.65 cu.ft. / lb dry air<br />

– e. Enthalphy?<br />

• 25 BTU’s / lbs. dry air<br />

Problem No. 2<br />

• The dry bulb reading is 78° and the wet bulb is 65°.<br />

Using the chart determine the following values. What is<br />

the:<br />

– Relative Humidity?<br />

• 50 percent<br />

– Dew Point?<br />

• 57.8 degrees<br />

– Absolute Humidity?<br />

• .0102 lbs. water / lb. dry air<br />

– Specific Volume?<br />

• 13.78 cu. ft. / lb. dry air<br />

– Enthalphy?<br />

• 30 BTU’s / lbs. dry air

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