文章基本信息
- 标题：実験送風機による実験 (その3) グリルの特性およびパンカールーブルの特性に関する研究
- 本地全文：下载
- 作者：樋口 道之助 ; 瀬川 正人
- 期刊名称：日本造船学会論文集
- 印刷版ISSN：0514-8499
- 电子版ISSN：1884-2070
- 出版年度：1966
- 卷号：1966
- 期号：119
- 页码：248-257
- DOI：10.2534/jjasnaoe1952.1966.248
- 出版社：The Japan Society of Naval Architects and Ocean Engineers
- 摘要：
This paper deals with results of tests made on following matters. (1) Discharge from the grille fitted on an air duct. (2) Discharge from the punkah louver fitted on an air duct. As the results of experiments, the empirical formulae for the coefficient of resistance in the streams at the grille and the punkah louver have been obtained. (1) Coefficient of resistance and pressure loss at the grille. (a) In case the grille directly fitted on the duct. ζ'=1.36+0.86/ ( SM ) 2 P=0.86 Hm +1.36 HG (b) In case the grill fitted on the duct by means of distance piece. ζ'=1.49+0.92/ ( SM ) 2 P =0.92 Hm +1.49 HG (2) Coefficient of resistance and pressure loss at the punkah louver. (a) In case the tail of punkah louver projects into the duct. ζ'=1.27+1.11/ ( SM ) 2 P =1.11 Hm +1.27 HD (b) In other case ζ'=1.55+1.27/ ( SM ) 2 P =1.27 Hm +1.55 HD Where ζ'=coefficient of resistance SM =flow speed ratio P =pressure loss, mmWG Hm =velocity head in the main duct, mmWG HG =discharging velocity head of the grille, mmWG HD =discharging velocity head of the punkah louver, mmWG
