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Category > Engineering Posted 10 May 2017 My Price 5.00

A Kaplan turbine delivering 40 MW works under a head

A Kaplan turbine delivering 40 MW works under a head of 35 m and
runs at 167 rpm. The hub diameter is 2.5 m and runner tip diameter is 5 m. The overall efficiency
is 87%. Determine the blade angles at the hub and tip and also at a diameter of 3.75 m.
Also find the speed ratio and flow ratio based on tip velocity. Assume ?H = 90%.

Answers

Alpha Geek
(8)
Status NEW Posted 10 May 2017 02:05 PM My Price 5.00

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file 1494427351-822940_1_636087705896932804_Answer.docx preview (182 words )
G-----------ive-----------n ----------- P -----------= 4-----------0 M-----------W -----------πœ-----------‚h ----------- ----------- = ----------- 0.-----------9 ----------- ----------- ----------- ----------- D-----------t =----------- 5m----------- π-----------œ‚-----------0 ----------- = ----------- 0.-----------87 ----------- ----------- ----------- ----------- Dh-----------= 2-----------.5 -----------m -----------πœ-----------‚m ----------- -----------= 0-----------.96-----------7 ----------- ----------- ----------- D ----------- = -----------3.7-----------5m ----------- H ----------- -----------= -----------35 -----------m -----------N ----------- =----------- 1-----------67 -----------rpm----------- ----------- At----------- th-----------e t-----------ip ----------- U -----------= π-----------œ‹-----------DtN-----------/60----------- = -----------43.-----------72m-----------/s ----------- π-----------œ‚h----------- ----------- =----------- 0-----------.9 -----------= 1------------ C-----------22/-----------(2g-----------H)=-----------&am-----------p;g-----------t;C-----------2 =----------- 8.-----------28 -----------m/s----------- T-----------an -----------πœ-----------·2 -----------= 8-----------.28-----------/43-----------.72----------- π-----------œ·-----------2 =----------- 10-----------.72-----------* -----------πœ-----------‚0 ----------- =----------- 0-----------.87----------- -----------= P-----------/(1-----------000-----------*9.-----------8*Q-----------*35-----------) =-----------&am-----------p;g-----------t; -----------Q=1-----------34 -----------m3/-----------s -----------Q=(-----------πœ-----------‹/4-----------)(D-----------t2------------Dh2-----------)Cr-----------1 =-----------&am-----------p;g-----------t; -----------Cr1----------- =----------- 9.-----------10 -----------m/s----------- S-----------pee-----------d r-----------ati-----------o =----------- U/-----------(2g-----------H)^-----------0.5----------- = -----------1.6-----------7
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