Finite Element Analysis and Experimental Study on the Thermal Resistance Characteristics of Motor Coolers

• Autorzy: Xu Ke , Yang Jie , Tang Chuansheng , Zhao Qiang , Li Tao
• Języki publikacji: EN

Abstrakty

EN

Motor coolers are operated with the coupling of temperature and pressure fields, in which the change rule is affected by multiple factors. In this study, the thermal resistance of the motorcooler was examined using the velocity coefficient method to reveal the influence of heat transfer and wind resistance. The temperature and pressure fields were analyzed using the finite element method based on the hydrodynamics and momentum theorem. By varying the heat transfer and wind resistance coefficients to reflect temperature and pressure characteristics, wind and water velocities were determined. Results demonstrate that the total convective heat transfer and wind resistance coefficients of the cooler model are sensitive to variations in face-to-face wind velocity, but not to those of the cooling water flow rate. When wind velocity increases from 0.8 to 5.19m/s, the total convective heat transfer increases by 1.85 times and wind resistance increases by 18.74 times. Variations in cooling water velocity has little effect on the Nusselt numberon the air side and the Euler number of the single row tube, which are multiplied with the increase of the Reynolds number. When the Reynolds number increases from 1020 to 6345, the Nusselt number increases by 2.05 times and the Euler numer decreases by 2.29 times. The results provide references for the design and performance testing of high-power motor coolers.

Słowa kluczowe

EN

cooler; thermal resistance characteristics; finite element analysis; heat transfer coefficient; drag coefficient; velocity coefficient

PL

chłodnica; opór cieplny; analiza metodą elementów skończonych; współczynnik przenikania ciepła; współczynnik oporu powietrza; współczynnik prędkości

• Wydawca: Institute of Heat Engineering, Warsaw University of Technology
• Czasopismo: Journal of Power Technologies
• Rocznik: 2020
• Tom: Vol. 100, nr 3
• Strony: 279--289
• Opis fizyczny: Bibliogr. 25 poz., rys., tab., wykr.

Twórcy

autor

Xu Ke

• Henan Institute of Technology, Henan Province, 453000, China

autor

Yang Jie

• Henan Institute of Technology, Henan Province, 453000, China

autor

Tang Chuansheng

• Nanyang Institute of Technology, Henan Province, 473004, China

autor

Zhao Qiang

• Wolong Electric Nanyang explosion proof Group Co., Ltd, Nanyang Henan 473004, China

autor

Li Tao

• Department of Informatics, University of Zurich, Zurich, 8050, Switzerland

Bibliografia

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Uwagi

PL

Opracowanie rekordu ze środków MNiSW, umowa Nr 461252 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2020).