Influence of evaporation temperature and organic fluid properties in the lower cycle of the binary power plant on its efficiency and power

• Autorzy: Nowak W. , Stachel A. , Borsukiewicz-Gozdur A.
• Języki publikacji: EN

Abstrakty

EN

On the basis of examination of results of investigations carried out up to date on the effectiveness of organic cycle power plant it has been concluded, amongst the others, that at the same efficiency application of adequate organic cycle allowed for increase of power as a result of increase of the flowrate circulating in the cycle. Such fact, together with carried out additional assessment of thermodynamical properties of organic compounds and water as circulation fluids in a steam cycle, with the view to increase improvement of its efficiency of operation by increase of power, proved to the authors that such as change is possible by replacing the single component power plant with a binary installation. Thermophysical properties play a decisive factor in selection and application of a particular low-boiling point fluid as a circulation fluid in the power plant. These have an important influence on the shape of saturation curves presented in the temperature-entropy diagram, which are characterised by the so called entropic coefficient (I), which is one of the parameters describing the properties of low-boiling point fluids. As a consequence of selection of adequate organic fluid it is possible to increase the cycle power by increasing of the amount of mass flowrate in the lower cycle. The authors developed an adequate mathematical model which enables performing calculation leading to comparisons of effectiveness of operation of proposed binary power plant and conventional power plant, where water acts as a working fluid, operating at similar extreme temperatures of evaporation and condensation.

Słowa kluczowe

EN

power plants

PL

elektrownia

• Wydawca: Wydawnictwo Instytutu Maszyn Przepływowych PAN ; Komitet Termodynamiki i Spalania PAN
• Czasopismo: Archives of Thermodynamics
• Rocznik: 2006
• Tom: Vol. 27, no. 4
• Strony: 147--156
• Opis fizyczny: Wykr., wz., tab.,Bibliogr. 7 poz.,

Twórcy

autor

Nowak W.

autor

Stachel A.

autor

Borsukiewicz-Gozdur A.

• Prof. dr hab. inż., energetyka; termodynamika, wymiana i wymienniki ciepła, miernictwo cieplne, ogrzewnictwo i wentylacja, technika cieplna.

Bibliografia

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• [5] NOWAK W, BORSUKIEWICZ-GOZDUR A.: Desirable Thermophysical Properties of Fluids in Low-Temperature Clausius-Rankine Cycle, IIR Int. Conf. Thermophysical Properties and Heat Transfer Processes of Refrigerants, Vicenza, Italy, 31 Aug. r 2 Sept., 2005.
• [6] NOWAK W, BORSUKIEWICZ-GOZDUR A.: Comparative Analysis of Natural and Synthetic Refrigerants in Application to Low Temperature Clausius-Rankine Cycle, 18th Int. Conf. on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems, Trondheim, Norway, June 20-22, 2005.
• [7] BADR O, PROBERT SD, O’CALLAGHAN WP.; Selecting a working fluid for a Rankine-cycle engine, Applied Energy 1985, 21, 1-42.