Atmospheric pollution is currently a real public health problem because of its potentially harmful effects on the environment as well human health. Several studies conducted in America, Europe, Asia, and Africa have established significant link between air cancer, infertility, cardiovascular respiratory morbidity, mortality. This study aims to measure some automotive pollutants (CO, CO2, NO2, S...

Bu çal??mada otomobil klima sisteminde farkl? so?utucu ak??kanlar kullan?larak kompresör volumetrik verim de?erlerinin analizi yap?lm??t?r. Literatürde önerilen ampirik ba??nt?dan elde edilen çal??ma ?artlar?ndaki de?erleri ile uyumlulu?u kar??la?t?rmal? olarak de?erlendirilmi?tir. Deneysel çal??malardan sonuçlara ba?l? ba??nt?n?n s?n?r de?erleri, ba??nt?lara ve için kullan?labilirli?i ara?t?r?...

Abstract In new energy vehicles, due to the loss of traditional engine noise source coverage, air conditioning blower has become main noises. this work, simulation radius volute tongue (R), gap tongue(d), blade outlet angle (β) and profile(A) were conducted obtain influence degree each parameter on aerodynamic efficiency blower, numerical methods which verified by experimental test. A global se...

A determination of the A0 and A1 cavity modes (here called collectively ”air modes”) in the violin has been made using CO2, helium and air/helium mixtures. The use of a “glove bag” enabled the atmosphere surrounding the violin to be better controlled than relying on the difference in density to displace the air inside the instrument. The cavity modes in CO2 and He were moved to frequencies as p...

Computational Fluid Dynamics is used to assess the thermal (heat transfer) performances of an automobile engine considering different grille opening and closing degrees. For this purpose entire vehicle modelled three fundamental aspects are examined, namely, open area air intake grille, position upper lower grilles their shape. The results show that have some influence also on aerodynamic chara...