N2 - In the paper presented are definitions of specific indicators of power which characterize the operation of the organic Rankine cycle (ORC) plant. These quantities have been presented as function of evaporation temperature for selected working fluids of ORC installation. In the paper presented also is the procedure for selection of working fluid with the view of obtaining maximum power. In the procedure of selection of working fluid the mentioned above indicators are of primary importance. In order to obtain maximum power there ought to be selected such working fluids which evaporate close to critical conditions. The value of this indicator increases when evaporation enthalpy decreases and it is known that the latent heat of evaporation decreases with temperature and reaches a value of zero at the critical point. L1 - http://journals.pan.pl/Content/94350/PDF/06_paper.pdf L2 - http://journals.pan.pl/Content/94350 PY - 2012 IS - No 3 October EP - 83 DO - 10.2478/v10173-012-0019-7 KW - ORC KW - Binary power plants KW - Near-critical region KW - Working fluid A1 - Nowak, Władysław A1 - Borsukiewicz-Gozdur, Aleksandra A1 - Wiśniewski, Sławomir PB - The Committee of Thermodynamics and Combustion of the Polish Academy of Sciences and The Institute of Fluid-Flow Machinery Polish Academy of Sciences DA - 2012 T1 - Influence of working fluid evaporation temperature in the near-critical point region on the effectiveness of ORC power plant operation SP - 73 UR - http://journals.pan.pl/dlibra/publication/edition/94350 T2 - Archives of Thermodynamics