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This paper presents an enhanced approach, as it will be considered here that the ORC installation could be extra-heated with the bleed steam, a concept presented by the authors. In such way the efficiency of the bottoming cycle can be increased and an amount of electricity generated increases. A thermodynamic analysis and a comparative study of the cycle efficiency for a simplified steam cycle cooperating with ORC cycle will be presented. The most commonly used organic fluids will be considered, namely R245fa, R134a, toluene, and 2 silicone oils (MM and MDM). Working fluid selection and its application area is being discussed based on fluid properties. The thermal efficiency is mainly determined by the temperature level of the heat source and the condenser conditions. The influence of several process parameters such as turbine inlet and condenser temperature, turbine isentropic efficiency, vapour quality and pressure, use of a regenerator (ORC) will be presented. Finally, some general and economic considerations related to the choice between a steam cycle and ORC are discussed.
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- Kategoria:
- Publikacja w czasopiśmie
- Typ:
- artykuły w czasopismach recenzowanych i innych wydawnictwach ciągłych
- Opublikowano w:
-
Key Engineering Materials
nr 597,
strony 87 - 98,
ISSN: 1662-9795 - Język:
- angielski
- Rok wydania:
- 2014
- Opis bibliograficzny:
- Mikielewicz D., Wajs J., Żmuda E.: Organic Rankine as bottoming cycle to a combined Brayton and Clausius-Rankine cycle// Key Engineering Materials. -Vol. 597., (2014), s.87-98
- Weryfikacja:
- Politechnika Gdańska
wyświetlono 138 razy