Chapter 5

Organic Flash Cycle

Tangellapalli Srinivas*

Abstract

In organic flash cycle (OFC), a small amount of liquid is flashed to a low pressure at the exit of the economizer. The resulted vapour from the flasher is used in turbine for power augmentation. It increases the economizer’s load hence a loss in thermal efficiency. OFC has been recommended to power plant operated by waste heat recovery as the focus is on maximum power. The modeling, simulation, analysis and optimization of OFC process conditions are presented to highlight its merits compared to organic Rankine cycle (ORC). The performance variations are analyzed with the source temperature below and above the critical temperature of the working fluid. The studied working fluids in OFC are R123, R124, R134a, R245fa, R717 and R407C.

Total Pages: 100-168 (69)

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