Pumping work in the organic Rankine cycle

Abstract Calculation results for the pumping work in the ORC systems are presented. Analysis has been carried out for 18 different organic fluids that can be used as working media in the subcritical ORC power plants. An attempt was made to find correlations between various thermo-physical properties of working fluids, specific work and power of the cycle. The simulation results allow a statement that the working substances with relatively low critical temperature have a greater cycle pressure range for the specified cycle temperature range than those with higher critical temperatures. The greater cycle pressure range contributes to a higher pumping power demand. Due to the fact that the specific pumping work does not result in explicit statement on the suitability of some working fluid to a specified ORC power plant, a definition of the power decrease factor κ is introduced.

[1]  George Papadakis,et al.  Design of a two stage Organic Rankine Cycle system for reverse osmosis desalination supplied from a steady thermal source , 2010 .

[2]  Vincent Lemort,et al.  Thermo-economic optimization of waste heat recovery Organic Rankine Cycles , 2011 .

[3]  N. Lai,et al.  Working fluids for high-temperature organic Rankine cycles , 2007 .

[4]  Alessandro Franco,et al.  Optimal design of binary cycle power plants for water-dominated, medium-temperature geothermal fields , 2009 .

[5]  Per Lundqvist,et al.  Theory and method for analysis of low temperature driven power cycles , 2012 .

[6]  Patrick Linke,et al.  On the role of working fluid properties in Organic Rankine Cycle performance , 2012 .

[7]  Shengjun Zhang,et al.  Working fluids of a low-temperature geothermally-powered Rankine cycle for combined power and heat generation system , 2010 .

[8]  Pedro J. Mago,et al.  An examination of regenerative organic Rankine cycles using dry fluids , 2008 .

[9]  M. M. Rahman,et al.  A supercritical Rankine cycle using zeotropic mixture working fluids for the conversion of low-grade , 2011 .

[10]  Isabell M. Welpe,et al.  Fundamental experiment of pumpless Rankine-type cycle for low-temperature heat recovery , 2011 .

[11]  Emilie Sauret,et al.  Candidate radial-inflow turbines and high-density working fluids for geothermal power systems , 2011 .

[12]  Per Lundqvist,et al.  A comparative study of the carbon dioxide transcritical power cycle compared with an organic rankine cycle with R123 as working fluid in waste heat recovery , 2006 .

[13]  Lourdes García-Rodríguez,et al.  Analysis and optimization of the low-temperature solar organic Rankine cycle (ORC) , 2010 .

[14]  W. Gu,et al.  Theoretical and experimental investigation of an organic Rankine cycle for a waste heat recovery system , 2009 .

[15]  Angelo Algieri,et al.  Comparative energetic analysis of high-temperature subcritical and transcritical Organic Rankine Cycle (ORC). A biomass application in the Sibari district , 2012 .

[16]  Tzu-Chen Hung,et al.  A study of organic working fluids on system efficiency of an ORC using low-grade energy sources , 2010 .

[17]  Mortaza Yari,et al.  Exergetic analysis of various types of geothermal power plants , 2010 .

[18]  Bertrand F. Tchanche,et al.  Fluid selection for a low-temperature solar organic Rankine cycle , 2009 .

[19]  A. S. Nafey,et al.  Combined solar organic Rankine cycle with reverse osmosis desalination process: Energy, exergy, and cost evaluations , 2010 .