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Thermodynamics for Chemical

A refrigeration cycle is a reversed heat engine. Which of the following has the maximum value of the co-efficient of performance (COP) for a given refrigeration effect ?

Thermodynamics for Chemical /
A refrigeration cycle is a reversed heat engine. Which of the following has the maximum value of the co-efficient of performance (COP) for a given refrigeration effect ?

A. Vapor compression cycle using expansion valve
B. Air refrigeration cycle
C. Vapor compression cycle using expansion engine
D. Carnot refrigeration cycle

A refrigeration cycle is a reversed heat engine. Which of the following has the maximum value of the co-efficient of performance (COP) for a given refrigeration effect ? Read More »

Thermodynamics for Chemical

As the entropy of the universe is increasing, day by day, the work producing capacity of a heat engine is_________________?

Thermodynamics for Chemical /
As the entropy of the universe is increasing, day by day, the work producing capacity of a heat engine is_________________?

A. Not changed
B. Decreasing
C. Increasing
D. Data sufficient, can’t be predicted

As the entropy of the universe is increasing, day by day, the work producing capacity of a heat engine is_________________? Read More »

Thermodynamics for Chemical

The following heat engine produces power of 100,000 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____________________?

Thermodynamics for Chemical /
The following heat engine produces power of 100,000 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____________________?

A. 100,000 kW
B. 160,000 kW
C. 200,000 kW
D. 320,000 kW

The following heat engine produces power of 100,000 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____________________? Read More »

Thermodynamics for Chemical