Chemical Engineering Thermodynamics
The following heat engine produces power of 100000 kW. The heat engine operates between 800 K and 300 K. It has a thermal efficiency equal to 50% of that of the Carnot engine for the same temperature. The rate at which heat is absorbed from the hot reservoir is

100, 000 kW
200, 000 kW
160, 000 kW
320, 000 kW

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Chemical Engineering Thermodynamics
Absolute zero temperature signifies the

Temperature of the heat reservoir to which a Carnot engine rejects all the heat that is taken in
Temperature of the heat reservoir to which a Carnot engine rejects no heat
None of these
Minimum temperature attainable

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Chemical Engineering Thermodynamics
Choose the condition that must be specified in order to liquify CO₂ (triple point for CO₂ is - 57°C and 5.2 atm).

Pressure and temperature must be kept below 5.2 atm. and - 57°C respectively
Pressure must be kept below 5.2 atm
Temperature must be kept above - 57°C
Pressure must be kept below 5.2 atm. and temperature must be kept above 57°C

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