Criteria for selection of working fluid in low-temperature ORC

• Autorzy: Mikielewicz D. , Mikielewicz J.

Identyfikatory

DOI

10.1515/cpe-2016-0035

• Języki publikacji: EN

Abstrakty

EN

The economics of an ORC system is strictly linked to thermodynamic properties of the working fluid. A bad choice of working fluid could lead to a less efficient and expensive plant/generation unit. Some selection criteria have been put forward by various authors, incorporating thermodynamic properties, provided in literature but these do not have a general character. In the paper a simple analysis has been carried out which resulted in development of thermodynamic criteria for selection of an appropriate working fluid for subcritical and supercritical cycles. The postulated criteria are expressed in terms of non-dimensional numbers, which are characteristic for different fluids. The efficiency of the cycle is in a close relation to these numbers. The criteria are suitable for initial fluid selection. Such criteria should be used with other ones related to environmental impact, economy, system size, etc. Examples of such criteria have been also presented which may be helpful in rating of heat exchangers, which takes into account both heat transfer and flow resistance of the working fluid.

Słowa kluczowe

EN

micro CHP; organic Rankine cycle

PL

mikro CHP; organiczny cykl Rankine'a

• Wydawca: Komitet Inżynierii Chemicznej i Procesowej Polskiej Akademii Nauk
• Czasopismo: Chemical and Process Engineering
• Rocznik: 2016
• Tom: Vol. 37, nr 3
• Strony: 429--440
• Opis fizyczny: Bibliogr. 21 poz., rys., tab.

Twórcy

autor

Mikielewicz D.

• Gdansk University of Technology, Faculty of Mechanical Engineering, Narutowicza 11/12, 80-233 Gdansk, Poland

autor

Mikielewicz J.

• The Szewalski Institute of Fluid-Flow Machinery PAS, Fiszera 14, 80-231 Gdansk

Bibliografia

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