sm3_23 - PROBLEM 3.23 KNOWN: Outer and inner surface...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Background image of page 2
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: PROBLEM 3.23 KNOWN: Outer and inner surface mnx'eetiun eenditiuns associated with zit'eenin—euuted. Ineenel turbine ltlnde. 'I'ltieknesses. thermal eunduetivities. and intert‘aieial resistnnee ut'the blade materials. h'latxitnu tn allowable temperature at IJ'lL‘UJ‘LCl. FIND: Whether lalntle utter-ates helm-c maximum temperature. 'l'empernture distribution in hlaitle. with and without the TH]. SC'llliM.-\'l‘l(': L2); 0.5 rim—k—rli—fi—Lff 5 mm . . " T Tm-ovaWT-W (hag-1 with R1,; (Uflin (hit-1 no = 1mm Whnz-K n-= sou Wlmz-K Luo=1TODK Lf=4ooK Inconel k = 25 th-K Zimmia to ' ' Tmmr = 1250 K k= 1.3 me-K _.-\S§il|l\ll"l‘l(}NS: [ t) t tne-Llimensiunnl. steady-state euntluetiun in a composite plane wall. [2] t.'unstnnt properties. [3] Negligible t'attliatien. .:\N.:\l.\'."~il.‘s': Fur a unit Ltt'Cfl. the tutal thermal resistnnee with the 'l'Bt] is Rt...“ 110' —tL/tt},_|. —Rf_..—(L/kt[n +l1i ' R'l'ull“. (in 3+3s5>1t1 4 + [H 4—2 1n Jr+ 2x] 'lntj-K/W 3.6% It] 3‘mE-K/W With :1 heat flux of i T: .0 ‘Tm 13th ,u qtt- 3.53> It}5 W/m2 .I- 1 w R lulgn' .13.{'1‘)>< [{I " m” - Ii/‘W the inner and outer surfitee temperatures ot‘the lttCDnCl are is...” 't'yli—(qgfhi) 4t]it}<+(3_53<iti5w/mj/Stnm/m:44:] llU—lK 'i'mm = '1'_..__i ll—(l/lli1'(l./l§)]n_‘L]:‘.= 4uuK | :tn‘" | 2;: tit—4m3 -}\'/\\-'(3.52 zit:S \-\-'/I112=ll_:'¢l-l\- lJl-‘itltclut the TBC'. R'EDLWD — ltnl —_/k)ln — hi I __:.2ri. In "in‘ - ti/w . nntl qlm = (Tm. 'l'x._i)/ltimiw = . 1 . 1 .3 2 - .- . s - 2 - a a |_ Lilli} K_|.-_'t..1{}> It} in -|~L.-Vl- = tun < tU “3-111 . The inner HULl outer surtnee temperatures at the Ineonel are then 'i'mw 'l'yli—{qlm/hi) 4tiim+l4tm>m5w/m3/snnw/m:-K} 13i2i< 'i'mgit-o] — '1'._i - [III/hi t—t1_/i.-}m]q;..0 _ JEJIIK+(2 - Ir; 3 —2- In film: .K/n'funtw- In5 \-‘t/I112)—|_‘-ll}l{ Continued... PROBLEM 3.23 (Cent) 1 3C”) 1260 122'.) 113'.) Temperature. TI: K1 1‘1-1'7I 1 10 U 0 H.001 0.002 0. [ID 3 LTI. 00:1 WIDE Inmrlel luczfi ion. Kim) + With TBC + WithDLfl IBIS Use :ilfthc- TBC féiCHITdICH Ora-ration ofthc Income} bciow Tm“ = [25“ Ii. L'UMR‘IICNTS: Since 111:: Llumbmty uflfm TBC dccrczrxcs mth Increasing1cmpcre1turc. which Inn-ream mth macawmg thicknch timitr, m Thc thirkncxs arc ussormicd with In‘lmbthiy L‘Lsrmufcnflmm. ...
View Full Document

Page1 / 2

sm3_23 - PROBLEM 3.23 KNOWN: Outer and inner surface...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online