Chemical Engineering Thermodynamics
The adiabatic throttling process of a perfect gas is one of constant enthalpy

In which there is an increase in temperature
Which is exemplified by a non-steady flow expansion
In which there is a temperature drop
Which can be performed in a pipe with a constriction

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Chemical Engineering Thermodynamics
Which of the following is an undesirable characteristics of a refrigerant ?

Its vapor pressure at the condenser temperature should be very high
It should be non-explosive
It should have a sub-atmospheric vapor pressure at the temperature in refrigerator coils
None of these

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