The influence of the impeller inlet blades on the efficiency of the blower

• Autorzy: Grzelczak, M.
• Konferencja: International Symposium on Compressor and Turbine Flow Systems - Theory and Application Areas "SYMKOM" (10 ; 26-28.10.2011 ; Łódź, Polska)
• Języki publikacji: EN

Abstrakty

EN

Designing a leading edge in an radial impeller of DA200 blower, one-dimensional method was used, which assumes constant value of absolute velocity along the height of the impeller blade cm(r) = const. This method makes design calculations much easier and enables selection of the right blade angle and, at the same time, assumes the condition of ruled surface, which considerably facilitates the production of impellers with the use of a milling method. Consideration of one-dimension model of flow contributes to the occurrence of differences between the actual flow angle and blade angle, which may lead to the deterioration of the compression process. Unfortunately, distribution of velocity right before the impeller additionally influences, e.g., the confusor shape of the inlet sleeve and cap. The latter two factors may influence the efficiency of the blower as well as shift the maximum efficiency into the area of positive and negative angles of the inlet whirl. The obtained results will be presented in this study.

Słowa kluczowe

PL

wirnik promieniowy; wydajność; dmuchawa

EN

radial impeller; efficiency; blower

• Czasopismo: Zeszyty Naukowe. Cieplne Maszyny Przepływowe - Turbomachinery / Politechnika Łódzka
• Rocznik: 2011
• Tom: nr 140
• Strony: 83-90
• Opis fizyczny: Bibliogr. 6 poz.

Twórcy

autor

Grzelczak, M.

• Poznan University of Technology, Chair of Thermal Engineering

Bibliografia

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• [2] Eisenlohr G., Krain H., Richter F-A., Tiede V., Investigations of the Flow Through a High Pressure Ratio Centrifugal Impeller, ASME 2002-GT-30394, 2002.
• [3] Japikse D., Centrifugal Compressor Design and Performance. Berlin, Germany September 24-28, 1990, pp. 2, 4-16.
• [4] Senoo Y., Hayami H., Kinoshita Y., Experimental Study on Flow in a Supersonic Centrifugal Impeller, Journal of Engineering for Power, Trans. ASME Series A, Vol. 101, January 1979, pp. 32-39.
• [5] Tuliszka E., Sprężarki dmuchawy i wentylatory, WNT, Warszawa 1976.
• [6] Walczak J., Sprężarki i dmuchawy promieniowe. Teoria, badania i optymalizacja stopnia sprężającego, Wydawnictwo Poznańskiego Towarzystwa Przyjaciół Nauk, Poznań 1999.