Optimum design criteria for an Organic Rankine cycle using low-temperature geothermal heat sources

Improved analysis of Organic Rankine Cycle based on radial flow turbine

“…Tchanche et al [5] analyzed 20 fluids and pointed that HFC134a was most suitable for ORC with solar thermal energy as heat source. Madhawa Hettiarachchi [6] proposed an economic objective function for low temperature geothermal ORC, analyzed four fluids, namely ammonia, HCFC123, pentane and PF5050, and obtained the result that ammonia was the economy optimal fluid while the wet fluid property was its disadvantage. Chen [7] made theoretical research on HCFC123 subcritical ORC and carbon dioxide transcritical Rankine Cycle and pointed that dioxide transcritical Rankine Cycle had advantage of good temperature matching in the heater.…”

Environomic optimal configurations of geothermal energy conversion systems: Application to the future construction of Enhanced Geothermal Systems in Switzerland

“…Important aspects to be accounted for are the geothermal resources characteristics Franco and Vaccaro (2012), the design of the conversion cycle, which has to be optimized to maximize its efficiency Franco and Vaccaro (2012); Franco and Villani (2009); Hettiarachchi et al (2007), the choice of the working fluid for binary cycles Saleh et al (2007); Heberle and Brüggemann (2010); Guo et al (2011a,b), and the district heating parameters for CHP applications Guo et al (2011a,b). The thermodynamic performance is as well critical to ensure an efficient use of the resource, and it can be assessed using the exergy efficiency DiPippo (2004); Kanoglu and Dincer (2009);Coskun et al (2011);Ganjehsarabi et al (2011).…”

Multi-objective optimization of organic Rankine cycles for waste heat recovery: Application in an offshore platform

“…The optimal working fluids differ from the ones suggested in previous works refs. [8][9][10][11][12][13][14][15][16][17][18] since in this paper the heat source is at around 370 ºC while in refs.…”

“…Roy et al [9] carry out a parametric optimization and performance analysis of an organic Rankine cycle where the heat source is the flue gas at a temperature of 140 ºC exiting the discharged fans of a coal power plant. Hettiarachchi et al [10] use as the objective function the ratio of total heat exchange area to net power output. Quoilin et al [11] optimize a small-scale ORC for waste heat recovery applications; economic profitability and thermodynamic efficiency are the objective functions.…”

“…We apply the methodology to recuperate the waste heat from the SGT-500 gas turbine installed on the Draugen platform (Kristiansund, The North Sea). Compared with previous works [8][9][10][11][12][13][14][15][16][17][18], the approach in this paper is novel in the sense that it includes the total volume of the organic Rankine cycle and the net present value as objective functions. Furthermore, in contrast to previous works, the geometry of the shell-and-tube heat exchanger is included in the optimization procedure.…”