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

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

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

View Full Document
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

{[ snackBarMessage ]}

### What students are saying

• As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

Kiran Temple University Fox School of Business ‘17, Course Hero Intern

• I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

Dana University of Pennsylvania ‘17, Course Hero Intern

• The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

Jill Tulane University ‘16, Course Hero Intern