Paper Title
Comparative Thermodynamic Performance Analysis of Kalina and Organic Rankine Cycles

Abstract
The Kalina and organic Rankine cycles have been considered as the alternatives to the conventional Rankine cycle to be used as a bottoming cycle for combined cycle power plant. In this paper thermodynamic performance assessment is carried out for Kalina cycle system (KCS) and organic Rankine cycle (ORC) for recovery of low-grade heat sources. Effects of the working fluid, turbine inlet pressure, and mass fraction of ammonia on the system performance are systemically investigated. Results show that for a specified source fluid, KCS does not show higher net power production but higher thermal efficiency than ORC. Index Terms - Organic Rankine cycle (ORC), Kalina cycle system(KCS), ammonia-water mixture, low-grade heat source.