The adiabatic throttling process of a perfect gas is one of constant enthalpy_________________?
Correct answer: B. Which can be performed in a pipe with a constriction
- A. In which there is a temperature drop
- B. Which can be performed in a pipe with a constriction
- C. Which is exemplified by a non-steady flow expansion
- D. In which there is an increase in temperature
Explanation
Throttling through a valve or pipe constriction is an adiabatic steady-flow process with negligible changes in kinetic and potential energy, giving h1 = h2. A perfect gas therefore has constant temperature as well as constant enthalpy during throttling.
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