Temat: Exergy analysis - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Thermodynamic assessment of crude distillation units: case studies of Nigeria refineries
Autorzy:: Osuolale, Funmilayo Nihinlola
Anozie, Ambrose Nwora
Powiązania:: https://bibliotekanauki.pl/articles/240552.pdf
Data publikacji:: 2019
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: crude distillation unit
exergy efficiency
refineries
thermodynamic analysis
Opis:: This paper presents the results of thermodynamic analysis of the crude distillation units of two refineries in Nigeria. The analysis was intended to assess the thermodynamic efficiencies of the refineries and proffer methods of improving the efficiencies. Presented results show the atmospheric distillation units of the refineries have 33.3% and 31.6% exergetic efficiencies and 86.5% and 74.6% energetic efficiencies, respectively. Modifications of the operating and feed conditions of the refineries resulted in increased exergetic efficiencies for as much as 62.3% and 38.7% for the refineries. Thermodynamic analysis of the refineries can bring about efficiency improvement and effectiveness of the refineries.
Źródło:: Archives of Thermodynamics; 2019, 40, 4; 83-102
1231-0956
2083-6023
Pojawia się w:: Archives of Thermodynamics
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Modeling, exergy analysis and optimization of cement plant industry
Autorzy:: Abutorabi, Hossein
Kianpour, Ehsan
Powiązania:: https://bibliotekanauki.pl/articles/2106427.pdf
Data publikacji:: 2022
Wydawca:: Politechnika Koszalińska. Wydawnictwo Uczelniane
Tematy:: exergy
organic Rankine cycle
thermodynamic analysis
cement plant
egzergia
organiczny cykl Rankine'a
analiza termodynamiczna
cementownia
Opis:: This study investigates the recovery of wasted heat in the cement plant industries (Neka Cement Factory) in order to reduce the use of fossil fuels and greenhouse gas emissions. Cement is the most widely used man-made material. The global cement industry produces about 3.3 billion tons of cement annually. A lot of energy is needed to produce cement. About 200 kg of coal is used to produce each ton of cement. The cement industry also produces about five percent of the world's greenhouse gases. The method studied in this research is based on heat recovery from boilers installed at the outlet of a clinker cooler and a preheater in a cement factory. Due to the low temperature of the gases available, three different fluids, i.e. water, R134a and R245fa were considered as the operating fluids. Also, energy and exergy analyses are performed in a Rankin cycle and the selection of optimal parameters is considered by using genetic algorithm. The results of this study showed that water with optimized parameters leads to an increase in the production capacity from 5 to 9 MW. However, fluid R134a with optimized parameters leads to a 4% increase in exergy losses and it also increases the production capacity from 5 to 9 MW.
Źródło:: Journal of Mechanical and Energy Engineering; 2022, 6, 1; 55--66
2544-0780
2544-1671
Pojawia się w:: Journal of Mechanical and Energy Engineering
Dostawca treści:: Biblioteka Nauki

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