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Chemical Engineering - Chemical Engineering Thermodynamics

Exercise : Chemical Engineering Thermodynamics - Section 2
26.
Lowering of condenser temperature (keeping the evaporator temperature constant) in case of vapour compression refrigeration system results in
increased COP.
same COP.
decreased COP.
increased or decreased COP ; depending upon the type of refrigerant.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
27.
Pick out the correct statement.
If an insoluble gas is passed through a volatile liquid placed in a perfectly insulated container, the temperature of the liquid will increase.
A process is irreversible as long as Δ S for the system is greater than zero.
The mechanical work done by a system is always equal to P.dV.
The heat of formation of a compound is defined as the heat of reaction leading to the formation of the compound from its reactants.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
28.
Grams of butane (C4H10) formed by the liquefaction of 448 litres of the gas (measured at (STP) would be
580
640
1160
data insufficient; can't be computed
Answer: Option
Explanation:
No answer description is available. Let's discuss.
29.
The thermodynamic law, PVy = constant, is not applicable in case of
ideal compression of air.
free expansion of an ideal gas.
adiabatic expansion of steam in a turbine.
adiabatic compression of a perfect gas.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
30.
What is the value of maximum COP in case of absorption refrigeration, if refrigeration provided is at temperature, TR(where, T1 and T2 are source & surrounding temperatures respectively.)?
none of these
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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