Design and Modification of Organic Rankine Cycle

Abstract

Abstract: The Organic Rankine cycle is very similar to the Rankine cycle which is oftenly used when the high Temperatures are not available to produce steam. The Ordinary Rankine cycle used in thermal power plant for converting water into steam and further that steam isexpanded through a turbine for generating electricity. The advantage of using organic fluid over water is that it has a low boiling temperature which is a prime criterion for the use with any low- grade heat source. Due to the low liquid to vapor-volume ratios associated with organic working fluids, a single stage expansion device can be used to convert thermal energy to mechanical work. In water fed Rankine cycle, a robust turbine is used which requires the working fluid to be superheated to avoid any condensation droplets forming during expansion. Removing chances for possible damage to the blades. In an ORC, a compact low-speed expansion device may be used which does not require the mandatory superheating of the fluid.