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On the Benefits of Separating the Heat Transfer Section and Analyzing Elementary Thermodynamic Cycles in Energy Systems Analysis
University of Padova.
University of Padova.
2009 (Engelska)Ingår i: Proceedings of the ASME International Mechanical Engineering Congress and Exposition - 2008: presented at 2008 ASME International Mechanical Engineering Congress and Exposition, October 31 - November 6, 2008, Boston, Massachusetts, USA, New York: American Society of Mechanical Engineers , 2009, Vol. 8 : Energy systems: analysis, thermodynamics and sustainability, sustainable products and processes, s. 283-294Konferensbidrag, Publicerat paper (Refereegranskat)
Abstract [en]

The search for increasing performance and efficiency in energy system analysis leads to complex and highly integrated systems configurations. In a wide variety of energy systems the high integration among components derives from the need of correctly exploiting all the internal heat sources by a proper matching with the internal heat sinks. To address this problem in a general way, in previous works it was suggested to extract from the system flowsheet a “basic configuration” including the components different from the heat exchangers (named “basic” components) and a set of hot and cold thermal flows (without considering the heat exchangers that realize the heat transfer among them). It was also shown how the comprehension of the processes occurring within the system can be strongly facilitated by analyzing separately the elementary thermodynamic cycles involved in the system processes. In this paper, a further step is done by considering the overall efficiency as a baseline efficiency, obtained from the contributions of the separate elementary cycles, with the additional contribution given by the thermal coupling (i.e. the internal heat transfer) among the cycles themselves. The advantages of this analysis are shown using the evolution of the STIG cycle towards more complex system configurations as an example of application.

Ort, förlag, år, upplaga, sidor
New York: American Society of Mechanical Engineers , 2009. Vol. 8 : Energy systems: analysis, thermodynamics and sustainability, sustainable products and processes, s. 283-294
Identifikatorer
URN: urn:nbn:se:ltu:diva-28695DOI: 10.1115/IMECE2008-67501Lokalt ID: 296333f4-a950-4f50-a577-bf0220d36e7aISBN: 9780791848692 (tryckt)OAI: oai:DiVA.org:ltu-28695DiVA, id: diva2:1001898
Konferens
ASME International Mechanical Engineering Congress and Exposition : 31/10/2008 - 06/11/2008
Anmärkning
Upprättat; 2012; 20120827 (andbra)Tillgänglig från: 2016-09-30 Skapad: 2016-09-30 Senast uppdaterad: 2017-11-25Bibliografiskt granskad

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