Gabarito-Prova-Transferencia-de-Calor-Resolucao-de-Exercicios

GABARITO 1º P S2 2019 QUESTÃO 1 ø 10mm L 30mm P Ts 3ºC T 50ºC a h 150 Wm²K As πDL π001003 As 94248 x 10⁴ m² qf hAs Ts T qf 150 94248 x 10⁴ 3 50 719W 15 b ε 015 qf hAs Ts T εσ As Ts⁴ T⁴ 75 015 567 x 10⁸ 94248 x 10⁴ 276⁴ 223⁴ 751 W 15 QUESTÃO 2 Tg 0ºC V 1m³ W 1m A 6W 6m² L 200mm k 01 Wm²K h 5 Wm²K T 35ºC T Tsi 0ºC a qf hk T Tse kAL Tse Tsi Tsi 0C Tse 1 k hL T Tse T1 khL 351 015 02 3182º 10 qf hk T Tse 56 35 3182 9545 W 10 b qf mt hse ρv hse t t ρV hse qf t 700 921 334000 9545 489 x 10⁵ s 567 dias 1 QUESTÃO 3 r1 1cm r2 102cm k 1 Wm K 20ºC 30ºC 0u²K a 1r² r k r² Tr 1r²senθ θ k senθ Tθ 1r² sen²θ ²Tφ² ρcp Tt ddr r² dTdr 0 CC Trr1 Ti k Tr rr2 hT Tr2 10