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Cilindros Prática 4 - Condução Transiente Aço T do banho, °C (T∞) 60 Cp (J/Kg*K) 442 T incial, °C (Ti) 27 ρ (Kg/m³) 7836 Diâmetro (m) 0.0505 Raio (m) 0.02525 Comprimento (m) 0.153 A (m²) 0.02844 V (m³) 0.00031 t (s) T(t) , °C C y = ln(C) 0 27 1 0.00000 12 29 0.9393939394 -0.06252 20 31 0.8787878788 -0.12921 28 33 0.8181818182 -0.20067 35 35 0.7575757576 -0.27763 43 37 0.696969697 -0.36101 51 39 0.6363636364 -0.45199 59 41 0.5757575758 -0.55207 69 43 0.5151515152 -0.66329 81 45 0.4545454545 -0.78846 93 47 0.3939393939 -0.93156 107 49 0.3333333333 -1.09861 127 51 0.2727272727 -1.29928 148 53 0.2121212121 -1.55060 179 55 0.1515151515 -1.88707 224 57 0.0909090909 -2.39790 a -0.0106 319 59 0.0303030303 -3.49651 h (w/m².K) 400.17934 Cobre T do banho, °C (T∞) 60 Cp (J/Kg*K) 385 T inicial, °C (Ti) 29 ρ (Kg/m³) 8933 Diâmetro (m) 0.0505 Raio (m) 0.02525 Comprimento (m) 0.153 A (m²) 0.02836 V (m³) 0.00031 t (s) T(t) , °C C y = ln(C) 0 29 1 0.00000 3 31 0.935483871 -0.06669 8 33 0.8709677419 -0.13815 12 35 0.8064516129 -0.21511 17 37 0.7419354839 -0.29849 21 39 0.6774193548 -0.38946 26 41 0.6129032258 -0.48955 31 43 0.5483870968 -0.60077 38 45 0.4838709677 -0.72594 45 47 0.4193548387 -0.86904 54 49 0.3548387097 -1.03609 65 51 0.2903225806 -1.23676 80 53 0.2258064516 -1.48808 100 55 0.1612903226 -1.82455 129 57 0.0967741935 -2.33537 186 59 0.0322580645 -3.43399 a -0.0185 h (w/m².K) 695.48098 Alumínio T do banho, °C (T∞) 60 Cp (J/Kg*K) 903 T inicial, °C (Ti) 25 ρ (Kg/m³) 2702 Diâmetro (m) 0.051 Comprimento (m) 0.152 Raio (m) 0.0255 A (m²) 0.02844 V (m³) 0.00031 t (s) T(t) , °C C y = ln(C) 0 27 0.9428571429 -0.05884 5 29 0.8857142857 -0.12136 8 31 0.8285714286 -0.18805 11 33 0.7714285714 -0.25951 13 35 0.7142857143 -0.33647 16 37 0.6571428571 -0.41985 18 39 0.6 -0.51083 22 41 0.5428571429 -0.61091 26 43 0.4857142857 -0.72213 31 45 0.4285714286 -0.84730 36 47 0.3714285714 -0.99040 43 49 0.3142857143 -1.15745 50 51 0.2571428571 -1.35812 60 53 0.2 -1.60944 73 55 0.1428571429 -1.94591 94 57 0.0857142857 -2.45674 a -0.0267 h (w/m².K) 710.09501 a h (w/m².K) Placas Cobre T do banho, °C (T∞) 60 Cp (J/Kg*K) 385 T inicial, °C (Ti) 27 ρ (Kg/m³) 8933 Espessura (m) 0.0127 Comprimento (m) 0.1524 Largura (m) 0.1009 A (m²) 0.03687 V (m³) 0.000187 t (s) T(t) , °C C y = ln(C) 0 27 1.00000 0.00000 3 29 0.93939 -0.06252 6 31 0.87879 -0.12921 8 33 0.81818 -0.20067 10 35 0.75758 -0.27763 12 37 0.69697 -0.36101 14 39 0.63636 -0.45199 17 41 0.57576 -0.55207 20 43 0.51515 -0.66329 24 45 0.45455 -0.78846 30 47 0.39394 -0.93156 36 49 0.33333 -1.09861 46 51 0.27273 -1.29928 61 53 0.21212 -1.55060 72 55 0.15152 -1.88707 81 57 0.09091 -2.39790 107 59 0.03030 -3.49651 a -0.0312 h (w/m².K) 544.2283062653 Alumínio T do banho, °C (T∞) 60 Cp (J/Kg*K) 903 T inicial, °C (Ti) 25 ρ (Kg/m³) 2702 Espessura (m) 0.0122 Comprimento (m) 0.1521 Largura (m) 0.1009 A (m²) 0.03687 V (m³) 0.000195 t (s) T(t) , °C C y = ln(C) 0 25 1.00000 0.00000 1 27 0.94286 -0.05884 3 29 0.88571 -0.12136 5 31 0.82857 -0.18805 6 33 0.77143 -0.25951 7 35 0.71429 -0.33647 9 37 0.65714 -0.41985 11 39 0.60000 -0.51083 13 41 0.54286 -0.61091 15 43 0.48571 -0.72213 17 45 0.42857 -0.84730 20 47 0.37143 -0.99040 23 49 0.31429 -1.15745 27 51 0.25714 -1.35812 32 53 0.20000 -1.60944 41 55 0.14286 -1.94591 54 57 0.08571 -2.45674 a -0.0486 h (w/m².K) 627.1491500407 Esferas Cobre T do banho, °C (T∞) 60 Cp (J/Kg*K) 385 T inicial, °C (Ti) 27 ρ (Kg/m³) 8933 Diâmetro (m) 0.0509 Raio (m) 0.02545 A (m²) 0.0081392697 V (m³) 6.90E-05 t (s) T(t) , °C C y = ln(C) 0 27 1.00000 0.00000 2 29 0.93939 -0.06252 5 31 0.87879 -0.12921 9 33 0.81818 -0.20067 12 35 0.75758 -0.27763 16 37 0.69697 -0.36101 20 39 0.63636 -0.45199 23 41 0.57576 -0.55207 28 43 0.51515 -0.66329 33 45 0.45455 -0.78846 39 47 0.39394 -0.93156 45 49 0.33333 -1.09861 54 51 0.27273 -1.29928 65 53 0.21212 -1.55060 82 55 0.15152 -1.88707 105 57 0.09091 -2.39790 150 59 0.03030 -3.49651 a -0.0233 h (w/m².K) 679.7989923083 Alumínio T do banho, °C (T∞) 60 Cp (J/Kg*K) 903 T inicial, °C (Ti) 27 ρ (Kg/m³) 2702 Diâmetro (m) 5.07E-02 Raio (m) 2.54E-02 A (m²) 0.0080754325 V (m³) 6.82E-05 t (s) T(t) , °C C y = ln(C) 0 27 1 0 6 29 0.9393939394 -0.062520357 9 31 0.8787878788 -0.1292117315 11 33 0.8181818182 -0.2006706955 14 35 0.7575757576 -0.2776317366 17 37 0.696969697 -0.3610133455 19 39 0.6363636364 -0.4519851237 22 41 0.5757575758 -0.5520685823 26 43 0.5151515152 -0.6632942174 29 45 0.4545454545 -0.7884573604 33 47 0.3939393939 -0.931558204 39 49 0.3333333333 -1.0986122887 44 51 0.2727272727 -1.2992829841 52 53 0.2121212121 -1.5505974124 63 55 0.1515151515 -1.887069649 77 57 0.0909090909 -2.3978952728 112 59 0.0303030303 -3.4965075615 a -0.0299 h (w/m².K) 616.45445043 Resfriamento Alumínio T ambiente, °C (T∞) 25 Cp (J/Kg*K) 903 T do banho, °C (Ti) 60 ρ (Kg/m³) 2702 Diâmetro (m) 5.07E-02 T inicial (t=0), °C 59 Raio (m) 2.54E-02 A (m²) 0.0080754325 V (m³) 0.0000682374 CONVECÇÃO FORÇADA t (s) T(t) , °C C y = ln(C) 0 59 1.00000 0.00000 23 57 0.94118 -0.06062 42 55 0.88235 -0.12516 63 53 0.82353 -0.19416 85 51 0.76471 -0.26826 110 49 0.70588 -0.34831 136 47 0.64706 -0.43532 168 45 0.58824 -0.53063 200 43 0.52941 -0.63599 240 41 0.47059 -0.75377 287 39 0.41176 -0.88730 a -0.0031 CONVECÇÃO NATURAL h (w/m².K) 63.91333767 Alumínio T ambiente, °C (T∞) 25 Cp (J/Kg*K) 903 T do banho, °C (Ti) 60 ρ (Kg/m³) 2702 Diâmetro (m) 5.09E-02 T inicial (t=0), °C 59 Raio (m) 0.02545 A (m²) 0.0080754325 V (m³) 0.0000682374 t (s) T(t) , °C C y = ln(C) 0 59 1.00000 0.00000 54 57 0.94118 -0.06062 118 55 0.88235 -0.12516 198 53 0.82353 -0.19416 300 51 0.76471 -0.26826 426 49 0.70588 -0.34831 566 47 0.64706 -0.43532 682 45 0.58824 -0.53063 853 43 0.52941 -0.63599 1050 41 0.47059 -0.75377 1277 39 0.41176 -0.88730 a -0.0007 h (w/m².K) 14.43204399 Biot Corpo de Prova Convecção Lc = V/A (m) h (W/m2∙K) Bi Aquecimento Cilindro Alumínio ― 0.01092 710.0950056962 0.0327183015 Aço ― 0.01081 400.1793400844 0.0884650034 Cobre ― 0.01084 695.4809828984 0.0188005333 Placa Alumínio ― 0.00507 627.1491500407 0.0134162287 Corpo de Prova A (m2) V (m3) Lc = V/A (m) Cobre ― 0.00522 544.2283062653 0.0070844682 Cilindro Alumínio 0.02844 3,105 ∙ 10-4 0.01092 Esfera Alumínio ― 0.00845 616.45445043 0.0219790722 Aço 0.02836 3,065 ∙ 10-4 0.01081 Cobre ― 0.00848 679.7989923083 0.0143757991 Cobre 0.02828 3,065 ∙ 10-4 0.01084 Resfriamento Esfera Alumínio Natural 0.00845 14.43204399 0.0005145602 Placa Alumínio 0.03687 1,87 ∙ 10-4 0.00507 Forçada 0.00845 63.91333767 0.0022787667 Cobre 0.03729 1,95 ∙ 10-4 0.00522 Esfera Alumínio 8,075 ∙ 10-3 6,824 ∙ 10-5 0.00845 Cobre 8,139 ∙ 10-3 6,905 ∙ 10-5 0.00848 Material ρ (kg/m³) CP (J/kg.K) k (W/m.K) α (m2/s) Alumínio 903 2702 237 97,1 ∙ 10-6 Aço 443 7836 48.9 14,1 ∙ 10-6 Cobre 385 8933 401 11,7 ∙ 10-5 Tcal - Cilindros Dados - Aço T do banho, °C (T∞) 60 Dados - Cobre T do banho, °C (T∞) 60 Dados - Alumínio T do banho, °C (T∞) 60 Cp (J/Kg*K) 442 T incial, °C (Ti) 27 Cp (J/Kg*K) 385 T inicial, °C (Ti) 29 Cp (J/Kg*K) 903 T inicial, °C (Ti) 27 ρ (Kg/m³) 7836 ρ (Kg/m³) 8933 ρ (Kg/m³) 2702 Diâmetro (m) 0.0505 hexp(w/m².K) = 400.1793400844 Diâmetro (m) 0.0505 hexp(w/m².K) = 695.4809828984 Diâmetro (m) 0.051 hexp(w/m².K) = 710.0950056962 Raio (m) 0.02525 a = -0.0106 Raio (m) 0.02525 a -0.0185 Comprimento (m) 0.152 a -0.0267 Comprimento (m) 0.153 Comprimento (m) 0.153 Raio (m) 0.0255 A (m²) 0.02844 hcal(w/m².K) 367.4870092706 A (m²) 0.02836 hcal(w/m².K) 707.840919075 A (m²) 0.02844 hcal(w/m².K) 678.4339245907 V (m³) 0.00031 V (m³) 0.00031 V (m³) 0.00031 t (s) TExp(t) , °C TCal(t) , °C ((TExp - Tcal)2)1/2 t (s) TExp(t) , °C TCal(t) , °C ((TExp - Tcal)2)1/2 t (s) TExp(t) , °C TCal(t) , °C ((TExp - Tcal)2)1/2 0 27 27 0.00000 0 29 29 0.00000 0 27 27 0.00000 12 29 30.63806629 1.63807 3 31 30.7025386008 0.29746 5 29 30.9517006306 1.95170 20 31 32.8377882969 1.83779 8 33 33.3348630283 0.33486 8 31 33.0917920787 2.09179 28 33 34.8727126798 1.87271 12 35 35.2693869994 0.26939 11 33 35.0742153842 2.07422 35 35 36.5278148509 1.52781 17 37 37.4913882787 0.49139 13 35 36.3140097214 1.31401 43 37 38.2862917527 1.28629 21 39 39.1243612868 0.12436 16 37 38.0590408019 1.05904 51 39 39.9130280008 0.91303 26 41 41.0000000315 0.00000 18 39 39.1503716221 0.15037 59 41 41.4178932727 0.41789 31 43 42.7071159948 0.29288 22 41 41.1728867056 0.17289 69 43 43.1414373153 0.14144 38 45 44.8425275409 0.15747 26 43 42.9992080159 0.00079 81 45 45.0000000002 0.00000 45 47 46.7142478213 0.28575 31 45 45.0350274221 0.03503 93 47 46.6536664956 0.34633 54 49 48.7852127843 0.21479 36 47 46.8270605001 0.17294 107 49 48.3539726431 0.64603 65 51 50.8832203148 0.11678 43 49 48.9812538521 0.01875 127 51 50.4141860434 0.58581 80 53 53.1264207502 0.12642 50 51 50.7831682767 0.21683 148 53 52.1863717431 0.81363 100 55 55.2832999723 0.28330 60 53 52.8584052563 0.14159 179 55 54.2216733407 0.77833 129 57 57.2678882429 0.26789 73 55 54.8740683736 0.12593 224 57 56.2712156516 0.72878 186 59 59.0658941302 0.06589 94 57 57.0000000276 0.00000 319 59 58.5210264093 0.47897 FO 3.32864 FO 9.52588 FO 14.01292 710.09501 Tcal - Placas Dados- Cobre T do banho, °C (T∞) 60 Dados - Alumínio T do banho, °C (T∞) 60 Cp (J/Kg*K) 385 T inicial, °C (Ti) 27 Cp (J/Kg*K) 903 T inicial, °C (Ti) 25 ρ (Kg/m³) 8933 ρ (Kg/m³) 2702 Espessura (m) 0.0126 hexp(w/m².K) = 544.2283062653 Espessura (m) 0.0122 hexp(w/m².K) = 627.1491500407 Comprimento (m) 0.1524 a = -0.0312 Comprimento (m) 0.1521 a -0.0486 Largura (m) 0.1009 Largura (m) 0.1009 A (m²) 0.03687 hcal(w/m².K) = 532.3145060007 A (m²) 0.03687 hcal(w/m².K) = 621.2426261546 V (m³) 0.000187 V (m³) 0.000195 t (s) TExp(t) , °C TCal(t) , °C ((TExp - Tcal)2)1/2 t (s) TExp(t) , °C TCal(t) , °C ((TExp - Tcal)2)1/2 0 27 27.00000 0.00000 0 25 25.00000 0.00000 3 29 29.88701 0.88701 1 27 26.64506 0.35494 6 31 32.52145 1.52145 3 29 29.70686 0.70686 8 33 34.14842 1.14842 5 31 32.48760 1.48760 10 35 35.67906 0.67906 6 33 33.78074 0.78074 12 37 37.11907 0.11907 7 35 35.01309 0.01309 14 39 38.47383 0.52617 9 37 37.30675 0.30675 17 41 40.35705 0.64295 11 39 39.38986 0.38986 20 43 42.07551 0.92449 13 41 41.28176 0.28176 24 45 44.13525 0.86475 15 43 42.99999 0.00001 30 47 46.78969 0.21031 17 45 44.56050 0.43950 36 49 48.99999 0.00001 20 47 46.63683 0.36317 46 51 51.89302 0.89302 23 49 48.43393 0.56607 61 53 54.87069 1.87069 27 51 50.45988 0.54012 72 55 56.33333 1.33333 32 53 52.50081 0.49919 81 57 57.21393 0.21393 41 55 55.13769 0.13769 107 59 58.73990 0.26010 54 57 57.39960 0.39960 FO 12.09477 FO 7.26695 Tcal - Esferas Dados- Cobre T do banho, °C (T∞) 60 Ddos - Alumínio T do banho, °C (T∞) 60 Cp (J/Kg*K) 385 T inicial, °C (Ti) 27 Cp (J/Kg*K) 903 T inicial, °C (Ti) 27 ρ (Kg/m³) 8933 ρ (Kg/m³) 2702 Diâmetro (m) 0.0509 hexp(w/m².K) = 679.7989923083 Diâmetro (m) 5.07E-02 hexp(w/m².K) = 616.45445043 Raio (m) 0.02545 a = -0.0233 Raio (m) 2.54E-02 a = -0.0299 A (m²) 0.0081392697 A (m²) 0.0080754325 V (m³) 6.90E-05 hcal(w/m².K) = 696.0016884646 V (m³) 6.82E-05 hcal(w/m².K) = 560.5443948774 t (s) TExp(t) , °C TCal(t) , °C ((TExp - Tcal)2)1/2 t (s) TExp(t) , °C TCal(t) , °C ((TExp - Tcal)2)1/2 0 27 27.00000 0.00000 0 27 27 0 2 29 28.53748 0.46252 6 29 31.9671102781 2.9671102781 5 31 30.71045 0.28955 9 31 34.1628365339 3.1628365339 9 33 33.37610 0.37610 11 33 35.5302531845 2.5302531845 12 35 35.21488 0.21488 14 35 37.4468898955 2.4468898955 16 37 37.47058 0.47058 17 37 39.213402606 2.213402606 20 39 39.52099 0.52099 19 39 40.3135210236 1.3135210236 23 41 40.93537 0.06463 22 41 41.8554997208 0.8554997208 28 43 43.07896 0.07896 26 43 43.7252510675 0.7252510675 33 45 44.98152 0.01848 29 45 44.9999999033 0.0000000967 39 47 46.98439 0.01561 33 47 46.5457173356 0.4542826644 45 49 48.72016 0.27984 39 49 48.5708356904 0.4291643096 54 51 50.89959 0.10041 44 51 50.0235487763 0.9764512237 65 53 53.00000 0.00000 52 53 51.973713551 1.026286449 82 55 55.33369 0.33369 63 55 54.0484485674 0.9515514326 105 57 57.30420 0.30420 77 57 55.9325456136 1.0674543864 150 59 59.07854 0.07854 112 59 58.429442135 0.570557865 FO 3.60894 FO 21.6905127372 a h (w/m².K) 616.45445043 Tcal - Resfriamento Dados - Alumínio T ambiente, °C (T∞) 25 Dados - Alumínio T ambiente, °C (T∞) 25 Cp (J/Kg*K) 903 T do banho, °C 60 Cp (J/Kg*K) 903 T do banho, °C 60 ρ (Kg/m³) 2702 T inicial (t=0), °C (Ti) 59 ρ (Kg/m³) 2702 T inicial (t=0), °C (Ti) 59 Diâmetro (m) 5.07E-02 hexp(w/m².K) = 63.91333767 Diâmetro (m) 5.09E-02 hexp(w/m².K) = 14.43204399 Raio (m) 2.54E-02 a = -0.0031 Raio (m) 0.02545 a = -0.0007 A (m²) 0.0080754325 A (m²) 0.0080754325 V (m³) 0.0000682374 hcal(w/m².K) = 66.1464374099 V (m³) 0.0000682374 hcal(w/m².K) = 15.8569649581 t (s) TExp(t) , °C TCal(t) , °C ((TExp - Tcal)2)1/2 t (s) TExp(t) , °C TCal(t) , °C ((TExp - Tcal)2)1/2 0 59 59.00000 0.00000 0 59 59.00000 0.00000 23 57 56.58143 0.41857 54 57 57.61683 0.61683 42 55 54.71379 0.28621 118 55 56.05020 1.05020 63 53 52.77779 0.22221 198 53 54.19730 1.19730 85 51 50.88475 0.11525 300 51 51.99432 0.99432 110 49 48.88967 0.11033 426 49 49.50111 0.50111 136 47 46.97774 0.02226 566 47 47.00000 0.00000 168 45 44.83333 0.16667 682 45 45.12223 0.12223 200 43 42.89816 0.10184 853 43 42.64243 0.35757 240 41 40.74252 0.25748 1050 41 40.16199 0.83801 287 39 38.53901 0.46099 1277 39 37.73308 1.26692 FO 2.16180 FO 6.94449
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