One method for determining relative humidity is to wet thebulb of a thermometer, whirl

Chapter 13, Problem 15

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One method for determining relative humidity is to wet the bulb of a thermometer, whirl it through the air, and then compare the thermometer reading with the actual air temperature. If the relative humidity is less than 100%, the reading on the thermometer will be less than the temperature of the air. This difference in temperature is known as the wet-bulb depression. The accompanying table gives the relative humidity as a function of the air temperature and the wet-bulb depression. Use the table to complete parts (a)–(c).

(a) What is the relative humidity if the air temperature is \(20^{\circ} \mathrm{C}\) and the wet-bulb thermometer reads \(16^{\circ} \mathrm{C}\)?

(b) Estimate the relative humidity if the air temperature is \(25^{\circ} \mathrm{C}\) and the wet-bulb depression is \(3.5^{\circ} \mathrm{C}\).

(c) Estimate the relative humidity if the air temperature is \(22^{\circ} \mathrm{C}\) and the wet-bulb depression is \(5^{\circ} C\).

Equation Transcription:

°

°

°

°

°

°

Text Transcription:

20 degrees C

16 degrees C

25 degrees C

3.5 degrees C

22 degrees C

5 degrees C