コールピック空気通路の流量係数および摩擦損失について
1960 年 76 巻 859 号 p. 14-18
詳細
1960 年 76 巻 859 号 p. 14-18
The discharge coefficients in the air ports of the coal pick were measured by the calculation of the pneumatic frictional losses of these.
Frictional coefficients are about 0.74 for both back and fore ports. Frictional coefficients are more than 0.4. If the pneumattic frictional loss is absent, an increase of a thermal efficiency will be lower than 5%, and an increase of effective power will be 18-20%. This fact is considered to be unnegligible.
