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THER002 Module 4

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Thermodynamics 2
Instructor: Engr. John Harvey V. Bequio, ME, RMP
Module 4: Reheat Cycle
Reheating minimizes moisture content and at the same time increases the efficiency of the cycle.
Thermodynamics 2
Module 4: Reheat Cycle
Reheating minimizes moisture content and at the same time increases the efficiency of the cycle.
Thermodynamics 2
Module 4: Reheat Cycle
Thermodynamics 2
Module 4: Reheat Cycle
Ideal Reheat Cycle: Working Principle
In Figure (a), Heat is added (QAB) in the boiler to generate steam (Point 1). Ideally, 100% of the
generated steam enters the steam turbine. As the engine receives the steam, partial expansion will
occur. The steam (Point 2) will now enter the reheater and the addition of heat (QAR) will be needed in
order to reheat the steam at a higher temperature before entering the turbine again. Reheating
minimizes the moisture content. The turbine will receive the reheated steam (Point 3) and now ready for
complete expansion. High-pressure steam will release energy which will be converted into useful energy
or simply say the work of a turbine (WT). Releasing energy in the steam will cause a decrease in
pressure. Then, the low-pressure steam (Point 4) will enter the condenser. After heat rejection (QR) in
the condenser, the steam will condense and becomes a saturated liquid (Point 5). A feedwater pump will
be necessary to push the liquid into a higher pressure component. Feedwater (Point 6) will be pushed by
a feedwater pump (WP) with a little amount of energy into the boiler.
Thermodynamics 2
Module 4: Reheat Cycle
Thermodynamics 2
Module 4: Reheat Cycle
Thermodynamics 2
Module 4: Reheat Cycle
Thermodynamics 2
Module 4: Reheat Cycle
Thermodynamics 2
Module 4: Reheat Cycle
Thermodynamics 2
Module 4: Reheat Cycle
Thermodynamics 2
Module 4: Reheat Cycle
Thermodynamics 2
Module 4: Reheat Cycle
Thermodynamics 2
Module 4: Reheat Cycle
Thermodynamics 2
Module 4: Reheat Cycle
Thermodynamics 2
Module 4: Reheat Cycle
Thermodynamics 2
Module 4: Reheat Cycle
Thermodynamics 2
Module 4: Reheat Cycle
Thermodynamics 2
Module 4: Reheat Cycle
Thermodynamics 2
Module 4: Reheat Cycle
Thermodynamics 2
Module 4: Reheat Cycle
Thermodynamics 2
Module 4: Reheat Cycle
Thermodynamics 2
Module 4: Reheat Cycle
Thermodynamics 2
Module 4: Reheat Cycle
Thermodynamics 2
Module 4: Reheat Cycle
Thermodynamics 2
Module 4: Reheat Cycle
Thermodynamics 2
Module 4: Reheat Cycle
Thermodynamics 2
Module 4: Reheat Cycle
Thermodynamics 2
Module 4: Reheat Cycle
Thermodynamics 2
Module 4: Reheat Cycle
Thermodynamics 2
Module 4: Reheat Cycle
Thermodynamics 2
Module 4: Reheat Cycle
The Actual Reheat Cycle
Thermodynamics 2
Module 4: Reheat Cycle
Thermodynamics 2
Module 4: Reheat Cycle
Thermodynamics 2
Module 4: Reheat Cycle
Thermodynamics 2
Module 4: Reheat Cycle
Thermodynamics 2
Module 4: Reheat Cycle
Thermodynamics 2
Module 4: Reheat Cycle
Thermodynamics 2
Module 4: Reheat Cycle
Thermodynamics 2
Module 4: Reheat Cycle
Thermodynamics 2
Module 4: Reheat Cycle
Thermodynamics 2
Module 4: Reheat Cycle
Thermodynamics 2
Module 4: Reheat Cycle
Thermodynamics 2
Module 4: Reheat Cycle
Thermodynamics 2
Module 4: Reheat Cycle
Thermodynamics 2
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