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1) Why does the spinning motion cool the wet bulb thermometer in a sling psychrometer when there is less humidity in the air?


2) Why are large differences in temperature between the wet bulb and dry bulb thermometers in a sling psychrometer possible only at higher temperatures?

Sagot :

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Answer:1)Once the wick is wet, hold the handle and whirl the psychrometer in the air. Whirling generates airflow around both the wet and dry bulbs. This action allows water in the saturated wick to evaporate, thereby reducing the temperature of the wet-bulb thermometer.

2)The rate of evaporation from the wet bandage on the bulb, and the temperature difference between the dry bulb and wet bulb, depends on the humidity of the air. The evaporation is reduced when the air contains more water vapor.

Explanation:

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