Approach to novel design of $CO_{2}$ based centrifugal compressor
PBN-AR
Instytucja
Wydział Energetyki i Paliw (Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie)
##### Informacje podstawowe
Główny język publikacji
EN
Czasopismo
E3S Web of Conferences
ISSN
EISSN
2267-1242
Wydawca
EDP Sciences (Les Ulis)
DOI
Rok publikacji
2016
Numer zeszytu
Strony od-do
1--6
Numer tomu
10
Identyfikator DOI
Liczba arkuszy
0.42
##### Autorzy
(liczba autorów: 2)
##### Konferencja
Indeksowana w Scopus
nie
Indeksowana w Web of Science Core Collection
tak
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Nazwa konferencji (skrócona)
SEED 2016
Nazwa konferencji
1st international conference on the Sustainable Energy and Environment Development
Początek konferencji
2016-05-17
Koniec konferencji
2016-05-19
Lokalizacja konferencji
Kraków
Kraj konferencji
PL
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##### Streszczenia
Język
EN
Treść
Even though turbomachinery design issues have been investigated almost since the beginning of engineering, its optimization process is still important. With the development of refrigeration devices and ORC based distributed generation facilities, a need for efficient and low-energy compressors and turbines became even more demanding. Such machines working with typical fluid, like air, are well described, but there is a room regarding the fluids like CO2, vapour of organic fluids, etc. The main objective of present studies is to propose a numerical model of the centrifugal compressor, with CO2 as the working fluid. Such unit may be a part of refrigeration cycle. Commonly, the scroll or piston compressors are used in such cases, however some discussed disadvantages show that the novel designs should be looked for. Properly designed centrifugal compressors can have higher efficiency than the presently used. Three dimensional analyses of proposed geometries were conducted – using a model including heat, mass and momentum conservation laws as well as ideal gas law. Verification of the proposed mesh and results was performed in the basis of values obtained using theoretical and empirical equations. With about 700 000 control volumes in the validated model, error of the results was no higher than 5%, with only about 1% in regards to the thermal parameters. Two design proposals were analysed, with performance maps as the main comparison factor. Apart from performance characteristics, the pressure and velocity fields were presented, showing the process of flow structure optimization. The main goal was to reduce negative effects of pressure and velocity gradients on the performance. Proposed precursory design might be a good starting point for further development of compressors. The results of numerical analysis were promising and shows the possibility of proposed design usage in practical applications, however to obtain deep understanding of the problem, the experimental analysis should be also done.
original article
peer-reviewed
##### Inne
System-identifier
idp:102188
Crossref
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