Abstract
Whilst many studies on waste heat recovery by implementation of organic Rankine cycle power generation have been done by a number of researchers, nevertheless, this paper presents the implementation of simulated annealing optimization method for achieving maximum power generation by setting up the optimum operation parameters from a two-stream of waste heat flue gas, along with the method of Analytic Hierarchy Process for selecting the most suitable working fluid for the power generator system. Minitab is used to conducting the design of experiment in order to generate functional relationship between power generated as the objective function and operation parameters as the control variables through heat-and-mass balance simulations. Power generation system simulations are carried out by using Cycle Tempo thermodynamics simulation software. Simulated annealing optimization is orchestrated by using MatLab based on the result of heat-and-mass balance simulations. Application of simulated annealing optimization method resulted in that 6.125 MW mechanical power is recovered from two streams of waste heat flue gas with 17.5 MW of thermal power at 360°C and 28.0 MW of thermal power at 310°C. The working fluid selected by the application of analytic hierarchy process for the organic Rankine cycle power generation system is isopentane. For this, the organic Rankine cycle is configured to have a two-stage turbine pressure of 10.42 bar-a and 4.30 bar-a, and a condenser pressure of 1.27 bar-a. The energy conversion efficiency of the power generation system is 13.46%, and specific steam consumption is 51.67 kg/kWh.
Published Version (
Free)
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call