如何從特性曲線判定風(fēng)扇性能-資料下載頁
2025-08-05 04:01本頁面
【正文】 =(++++98)/5=%a=[(20007600)()+(30007600)()+(50007600)()+(100007600)()+(180007600)()]/[(20007600)2+(30007600)2+(50007600)2+(100007600)2+(180007600)2]=[(3472)+(2392)+(832)+(432)+(13312)]/[(31360000)+(21160000)+(6760000)+(108160000)]=20440/167440000=b=YaX=(*7600)=+=(%)，以100(%)計(jì)算依據(jù)油耗公式Y(jié)=aX+b，得知S1風(fēng)扇在潤滑油量(Y)剩50%之時(shí)間X。X=(Yb)/a=(50100)/()=50/()=409836小時(shí)(2) S2樣品X=7600，Y=(++97+93+87)/5=%a=[(20007600)()+(30007600)()+(50007600)()+(100007600)()+(180007600)()]/ [(20007600)2+(30007600)2+(50007600)2+(100007600)2+(180007600)2]=[(24420)+(18680)+(4840)+(5140)+(84660)]/[(31360000)+(21160000)+(6760000)+(108160000)]=137740/167440000=b=YaX=(*7600)=+=(%)，以100%計(jì)算依據(jù)油耗公式Y(jié)=aX+b，得知S2風(fēng)扇在潤滑油量(Y)剩50%之時(shí)間X：X=(Yb)/a=(50100)/()=50/()=60782小時(shí)(3) S3樣品X=7600，Y=(++98+96+93)/5=%a=[(20007600)()+(30007600)()+(50007600)()+(100007600)()+(180007600)()]/ [(20007600)2+(30007600)2+(50007600)2+(100007600)2+(180007600)2]=[(13104)+(9844)+(2184)+(2784)+(43264)]/[(31360000)+(21160000)+(6760000)+(108160000)]=71180/167440000=b=YaX=(*7600)=+=(%)，以100%計(jì)算依據(jù)油耗公式Y(jié)=aX+b，得知S3風(fēng)扇在潤滑油量(Y)剩50%之時(shí)間X：X=(Yb)/a=(50100)/()=50/()=117619小時(shí)：油料最先消耗50%的風(fēng)扇為S2，時(shí)間為60782小時(shí)最慢者為S1，時(shí)間409836小時(shí)所以得知t1=60782小時(shí)，t2=409836小時(shí)=t1+(t2t1)*=60782+(40983660782)*=60782+220602=281384小時(shí)L10=t1+(t2t1)*=60782+(40983660782)*=60782+34905=95687小時(shí)
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