Regeneration effect on Rankine cycle (a) decreases thermal...

Regeneration effect on Rankine cycle
(a) decreases thermal efficiency
(b) increases thermal efficiency
(c) has no effect on thermal efficiency
(d) increases or decreases thermal efficiency depending on the point extraction of steam.

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Key Concepts

Rankine Cycle

The Rankine cycle is a thermodynamic cycle that describes the process used in steam power plants to convert heat into work. It involves a sequence of processes including pressurization of the working fluid, heating to create steam, expansion in a turbine to produce work, and finally condensation of the steam. The cycle is fundamental to understanding how power plants operate and how energy efficiency can be improved.

Regeneration

Regeneration refers to the method of improving cycle efficiency by partially extracting steam from the turbine to preheat the feedwater before it enters the boiler. This process reduces the need for additional heat input in the boiler, thereby enhancing the overall thermal efficiency of the cycle by minimizing energy losses.

Thermal Efficiency

Thermal efficiency is a measure of how effectively a heat engine, such as a Rankine cycle, converts heat energy into useful work. It is calculated by comparing the net work output to the heat input. Enhancements like regeneration in the cycle lead to higher thermal efficiency, as more of the heat is utilized in generating work rather than being wasted.

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