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Module 4: Liquid Characteristics - Heat and Enthalpy - Answers
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#1
- The enthalpy of vaporization for five liquids is provided below.
Based on this information which liquid would be the most efficient in
cooling a hot gas stream?
- Answer: Water is the most efficient cooling agent of the five
liquids listed because its enthalpy of vaporization is higher than that
for the other liquids. When a relatively small quantity of water is
sprayed into a hot gas stream, a substantial quantity of heat can be
transferred from the gas to the water. The enthalpy of vaporization
for water is high compared to many other liquids. Accordingly, it is
an especially good cooling agent.
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