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Title: COMPARATIVE ENERGETIC AND EXERGETIC ANALYSIS OF INDIVIDUAL OR COGENERATIVE SYSTEMS WITH STEAM TURBINES FOR PRODUCING HEAT AND MECHANICAL WORK
COMPARATIVE ENERGETIC AND EXERGETIC ANALYSIS OF INDIVIDUAL OR COGENERATIVE SYSTEMS WITH STEAM TURBINES FOR PRODUCING HEAT AND MECHANICAL WORK

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M. CIOCAN;A. DOBROVICESCU;A. SERBAN;M. STEFANESCU;L. DRUGHEAN;G. NASTASE
10.5593/sgem2019/6.1/S24.014
1314-2704
978-619-7408-88-1
English
19
6.1
Micro and Nano Technologies
The energy consumes for district or industrial heating and electrical energy are in most of cases concomitant. The paper analyses from the point of view of the First and Second Laws of Thermodynamics the advantages of producing heat and mechanical power each one individually or through cogeneration. It is clearly pointed out that the energy balance induces the idea that the most efficient conversion process is to produce heat in an individual boiler while the mechanical power production in a steam turbine system is much less efficient. The energetic analysis accounts only for the interactions with the external medium considering any heat loss as depending only on its magnitude and neglecting its temperature level as quality factor. The large energy loss in the condenser of the steam turbine system decreases dramatically the energetic efficiency of the overall system even if this heat transferred to the environment is useless due to its low temperature level. The exergetic analysis that accounts for both the quantity and quality of a heat carrier shows the real level of efficiency for each process advocating for the production of both heat and mechanical power by cogeneration.
conference
https://www.sgem.org/index.php/jresearch-article?citekey=CIOCAN201924109116
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19th International Multidisciplinary Scientific GeoConference SGEM 2019
19th International Multidisciplinary Scientific GeoConference SGEM 2019, 30 June - 6 July, 2019
Proceedings Paper
STEF92 Technology
International Multidisciplinary Scientific GeoConference-SGEM
Bulgarian Acad Sci; Acad Sci Czech Republ; Latvian Acad Sci; Polish Acad Sci; Russian Acad Sci; Serbian Acad Sci & Arts; Slovak Acad Sci; Natl Acad Sci Ukraine; Natl Acad Sci Armenia; Sci Council Japan; World Acad Sci; European Acad Sci, Arts & Letters; Ac
109-116
30 June - 6 July, 2019
website
cdrom
6364
energetic analysis; exergetic analysis; steam turbine systems; cogeneration