0
  1. Trang chủ >
  2. Kỹ Thuật - Công Nghệ >
  3. Kĩ thuật Viễn thông >

A HEAT TRANSFER TEXTBOOK - THIRD EDITION Episode 1 Part 1 pdf

A HEAT TRANSFER TEXTBOOK - THIRD EDITION Episode 2 Part 1 doc

A HEAT TRANSFER TEXTBOOK - THIRD EDITION Episode 2 Part 1 doc

... [5.6] 13 . Isothermal ellipsoid of semimajoraxis b and semiminor axes a conducts heat into an infinitemedium at T∞; b> ;a( see 4)4πb 1 a 2 b 2 tanh 1  1 a 2 b 2 meter [5 .16 ] 24 6 26 2 ... 5 .1 0a Φ 1 (Fo 1 = 0.565, Bi 1 = 0 . 21 05)= 0 .10 Φ 2 (Fo 2 = 0.565, Bi 2 = 0 . 21 05)= 0 .10 and, with eqn. (5.7 3a) ,Φ = Φ 12 ( 1 − Φ 1 )= 0 .19 The mean temperature isΘ =T 20 10 0 − 20 = 1 −Φ = 0. 81 soT ... medium atT∞(see items 4 and 7)4πR 1 +R/2hmeter [5 .18 ]9. Parallel cylinders exchange heat inan infinite conducting medium 2 cosh 1 L 2 −R 2 1 −R 2 22R 1 R 2 none [5.6] 10 . Same as 9,...
  • 25
  • 261
  • 0
A HEAT TRANSFER TEXTBOOK - THIRD EDITION Episode 2 Part 3 pot

A HEAT TRANSFER TEXTBOOK - THIRD EDITION Episode 2 Part 3 pot

... = 3 20 φ− 3 283 = 3 2u∞(6. 52) Since φ is a constant for any Pr [recall eqn. (6.46)], we separate variables: 2 tdδtdx=dδ 2 tdx= 3 /u∞ 3 20 φ − 3 283  §6.5 Heat transfer ... 0.0 021 35 soτyx= (0.0 021 35 )1 2 ρu 2 ∞=(0.0 021 35 )(1.05)(15) 2 2= 0 .25 22 kg/m·s 2 and the force isτyx A = 0 .25 22( 0.5) 2 = 0.0 630 5 kg·m/s 2 = 0.0 630 5 N= 0 . 23 oz6.7 Turbulent boundary layersTurbulenceBig ... pressure, especially in liq-uids.Example 6.5Air at 20 ◦C and moving at 15 m/s is warmed by an isothermal steam-heated plate at 110C, ẵ m in length andẵminwidth. Find theaverage heat transfer coecient...
  • 25
  • 292
  • 0
A HEAT TRANSFER TEXTBOOK - THIRD EDITION Episode 2 Part 4 ppt

A HEAT TRANSFER TEXTBOOK - THIRD EDITION Episode 2 Part 4 ppt

... transitionalvalue. Problems 3356.31 A thin metal sheet separates air at 44 ◦C, flowing at 48 m/s,from water at 4 ◦C, flowing at 0.2m/s. Both fluids start at a leading edge and move in the same ... at 25 ◦C flows at 0.7m/s over a 4 cm-long flat heaterat 60◦C. Find h, τw, h(x = 0. 04 m), and δ(x = 0. 04 m).6 .20 A large plate is at rest in water at 15◦C. The plate is suddenlytranslated ... W/m 2 ) were instead fixed at its average value of 76◦C, whatwould the average wall heat flux be?6 .26 A cold, 20 mph westerly wind at 20 ◦F cools a rectangular build-ing, 35 ft by 35 ft by 22 ...
  • 25
  • 360
  • 0
A HEAT TRANSFER TEXTBOOK - THIRD EDITION Episode 2 Part 5 pptx

A HEAT TRANSFER TEXTBOOK - THIRD EDITION Episode 2 Part 5 pptx

... and J. P. Hart-nett, editors, Advances in Heat Transfer, volume 6, pages 50 4 56 4.Academic Press, Inc., New York, 1970.[6.14] A. A. Žukauskas and A. B. Ambrazyavichyus. Heat transfer from a ... that of predictinglaminar convection in a pipe.7 .2 Heat transfer to and from laminar flows in pipesNot many industrial pipe flows are laminar, but laminar heating and cool-ing does occur in an ... from a plate in a liquid flow. Int. J. Heat Mass Transfer, 3(4):3 05 309,1961.[6. 15] A. Žukauskas and A. Šlanciauskas. Heat Transfer in TurbulentFluid Flows. Hemisphere Publishing Corp., Washington,...
  • 25
  • 265
  • 0
A HEAT TRANSFER TEXTBOOK - THIRD EDITION Episode 2 Part 6 pptx

A HEAT TRANSFER TEXTBOOK - THIRD EDITION Episode 2 Part 6 pptx

... fins of a heat exchanger may form a rect-angular passage through which air flows. Sometimes, the passage cross-section is very irregular, as might happen when fluid passes through a clearance between ... situations, but all must be viewed critically.Many are based on limited data, and many incorporate systematic errorsof one kind or another.In the face of a heat transfer situation that has ... 3 .60 8Rectangular a = 2b 3.391 4. 123 a = 4b 4.439 5.331 a = 8b 5.597 6. 490Parallel plates 7.541 8 .23 5different wall boundary conditions and a wide variety cross-sectionalshapes, both practical and ridiculous:...
  • 25
  • 274
  • 0
A HEAT TRANSFER TEXTBOOK - THIRD EDITION Episode 2 Part 8 docx

A HEAT TRANSFER TEXTBOOK - THIRD EDITION Episode 2 Part 8 docx

... by Fujii and Imura [8. 16], Vliet [8. 17], Pera andGebhart [8. 18] , and Al-Arabi and El-Riedy [8. 19], among others. 8. 5 Film condensation 431on the same basis. The integration of eqn. (8. 47) subject ... 434 Natural convection in single-phase fluids and during film condensation 8. 5Figure 8. 12 Results of the exact b.l. analysis of laminar filmcondensation on a vertical plate [8. 36].Sadasivan and ... trans- 8. 4 Natural convection in other situations 417Figure 8. 6 The data of many investigators for heat transfer from isothermal horizontal cylinders during natural convec-tion, as correlated...
  • 25
  • 314
  • 0
A HEAT TRANSFER TEXTBOOK - THIRD EDITION Episode 2 Part 9 pdf

A HEAT TRANSFER TEXTBOOK - THIRD EDITION Episode 2 Part 9 pdf

... onnatural convection heat transfer from a horizontal plates. Int. J. Heat Mass Transfer, 17(1):135–1 42, 197 4. 458 Heat transfer in boiling and other phase-change congurations 9. 1Figure 9. 1 ... Natural convection heat transfer from a plate with arbitrary inclination. Int. J. Heat Mass Transfer, 15(4):755–767, 19 72. [8.17] G. C. Vliet. Natural convection local heat transfer on constant ... shapes. Int. J. Heat Mass Transfer, 19: 1 399 –1404, 197 6.[8 .20 ] L. Pera and B. Gebhart. Natural convection boundary layer flowover horizontal and slightly inclined surfaces. Int. J. Heat Mass Transfer, ...
  • 25
  • 531
  • 0
A HEAT TRANSFER TEXTBOOK - THIRD EDITION Episode 2 Part 10 pptx

A HEAT TRANSFER TEXTBOOK - THIRD EDITION Episode 2 Part 10 pptx

... quite ac-curate and widely-used, semi-empirical equation for correlating surface 470 Heat transfer in boiling and other phase-change congurations Đ9 .2 Table 9 .2 Selected values of the surface ... 25 8 2. 80 25 5 2. 29 25 3 1.95Isopropyl alcohol 10 to 100 22 .90 0.0789Mercury 5 to 20 0 490.60 .20 49Methane 90 18.877 100 16. 328 115 12. 371Methyl alcohol 10 to 60 24 .00 0.0773Naphthalene 100 ... to 20 0 42. 84 0. 1107 Nicotine −40 to 90 41.07 0.11 12 Nitrogen −195 to −183 26 . 42 0 .22 65Octane 10 to 120 23 . 52 0.09509Oxygen 20 2 to −184 −33. 72 −0 .25 61Pentane 10 to 30 18 .25 0.11 021 Toluene 10...
  • 25
  • 172
  • 0
A HEAT TRANSFER TEXTBOOK - THIRD EDITION Episode 3 Part 1 potx

A HEAT TRANSFER TEXTBOOK - THIRD EDITION Episode 3 Part 1 potx

... R -1 2 5 1. 10R -1 2 1. 50 R- 13 4a 1. 63 R-22 2.20 R -1 5 2a 1. 10R -3 2 1. 20 R- 41 0a 1. 72so thathfbhlo= fn(Bo, Co)(9.49)When the convection number is large (Co  1) , as for low quality,nucleate boiling ... 30 5.6kg/m2sandRelo=GDàf= (30 5.6)(0.05) 1. 297 × 10 −4= 1. 178 × 10 5From eqns. (7.42) and (7. 43) :f = 11. 82 log 10 (1. 178 ì 10 5) 1. 642= 0. 01 736 NuD=(0. 01 736 /8) 1. 178 ì 10 5 10 00(0.892) 1 + 12 .70. 01 736 /8(0.892)2 /3 1 = ... 5 01 Table 9.4 Fluid-dependent parameter F in the Kandlikar cor-relation for copper tubing. Additional values are given in [9.47].Fluid F Fluid FWater 1. 0 R -1 2 4 1. 90Propane 2 .15 R -1 2 5 1. 10R -1 2 ...
  • 25
  • 376
  • 0
A HEAT TRANSFER TEXTBOOK - THIRD EDITION Episode 3 Part 2 potx

A HEAT TRANSFER TEXTBOOK - THIRD EDITION Episode 3 Part 2 potx

... Int. J. Heat Mass Transfer, 13: 1 425 –1 439 ,1970.[9. 23 ] J. S. Ded and J. H. Lienhard. The peak pool boiling heat flux from a sphere. AIChE J., 18 (2) :33 7 34 2, 19 72. [9 .24 ] A. L. Bromley. Heat transfer ... correlation for saturated two-phase flowboiling heat transfer inside horizontal and vertical tubes. J. Heat Transfer, 1 12( 1) :21 9 22 8, 1990. §10 .3 Radiant heat exchange between two finite black ... Chen. A correlation for boiling heat transfer to saturatedfluids in convective flow. ASME Prepr. 6 3- HT -3 4 , 5th ASME-AIChE Heat Transfer Conf. Boston, August 19 63. [9.45] S. G. Kandlikar. A general...
  • 25
  • 546
  • 0
A HEAT TRANSFER TEXTBOOK - THIRD EDITION Episode 3 Part 3 doc

A HEAT TRANSFER TEXTBOOK - THIRD EDITION Episode 3 Part 3 doc

... §10.4 Heat transfer among gray bodies 5 53 Additional two-body exchange problemsRadiation shields. A radiation shield is a surface, usually of high re-flectance, that is placed between a high-temperature ... equa-tions above.Figure 10.16 Illustration forExample 10.9. §10.4 Heat transfer among gray bodies 54910.4 Heat transfer among gray bodiesElectrical analogy for gray body heat exchangeAn ... surfaces that exchange radi-ation with one another. The evaluation of radiant heat transfer amongthese surfaces proceeds in essentially the same way as for three surfaces.For multisurface...
  • 25
  • 236
  • 0
A HEAT TRANSFER TEXTBOOK - THIRD EDITION Episode 3 Part 4 potx

A HEAT TRANSFER TEXTBOOK - THIRD EDITION Episode 3 Part 4 potx

... Thegeometrical mean beam length is defined asL0≡ 4 (volume of gas)boundary area that is irradiated(10. 54) Thus, for two infinite parallel plates a distance  apart, L0= 4A / 2A =2. Some other values ... net heat transfer is calculated using the surface area ofthe wall:Qnetg-w= A wgT 4 ggT 4 w= (0 .4) (5.67 ì 108)(0.098)( 14 73) 4 (0.12)(5 73) 4 = 32 kW/mTotal emissivity charts and ... Solar radiation usually arrives at an angleof less than 90◦to the surface because the sun is rarely directly overhead.We have seen that a radiant heat flux arriving at an angle less than 90◦is...
  • 25
  • 333
  • 0
A HEAT TRANSFER TEXTBOOK - THIRD EDITION Episode 3 Part 9 pdf

A HEAT TRANSFER TEXTBOOK - THIRD EDITION Episode 3 Part 9 pdf

... 1 29 .3 304.4 1 096 35 0 231 5 895 .2 1 09. 0 112.5 30 4.1 1078 36 0 2 290 824.881. 891 .0 30 3.8 1054 37 3 2257 717.0 30 3 .3 1022400 21 83 346 .9 30 2.4 94 5500 1828 299 .2 39 1600 11 73 295 .9 700 292 .3 Ttp2 73. 16 ... 8 ,95 4 38 4 39 8 11.57 4 83 420 401 39 1 38 9 38 4 37 8 36 6 35 2 33 6DS-C15715∗8 ,90 0 38 4 36 5 ≈10.7 36 7 35 5 34 5 33 5 32 0Beryllium copper 8,250 420 1 03 2 .97 117(2.2% Be)Brass (30 % Zn) 8,522 38 5 1 09 3. 32 ... 0.00 031 9 31 0 37 9 93 . 3 41 79 0.6260 1.508 6 .98 2 4. 63 0.00 036 1 32 0 47 98 9 .3 4181 0. 6 39 6 1.546 5. 832 3. 77 0.000 436 34 0 67 97 9.5 41 89 0.6605 1.610 4 .30 8 2.68 0.000565 36 0 87 96 7.4 4202 0.6 737 1.657 3. 371...
  • 25
  • 272
  • 0

Xem thêm

Từ khóa: heat and mass transfer cengel third editionjohn h lienhard iv and john h lienhard v heat transfer textbookproject 3 third edition unit 1 testspring recipes a problem solution approach third editionthermodynamics heat transfer and fluid flow module 1 thermodynamics12 pdf reference third edition version 1 4 november 2001 addison wesley isbn 0 201 75839 3solving a heat transfer problemunderstanding and using english grammar third edition workbook with answer key pdfvisions of america a history of the united states volume 1 pdflearning jquery third edition jonathan chaffer karl swedberg pdfancient philosophy a new history of western philosophy volume 1 pdfamerican headway second edition level 1 pdfnew headway preintermediate the third edition students book with key pdfa practical english grammar exercises 1 third edition pdfheat transfer from a solid sphere in uniform flow for re lt lt 1 and pe gt gt 1Nghiên cứu tổ hợp chất chỉ điểm sinh học vWF, VCAM 1, MCP 1, d dimer trong chẩn đoán và tiên lượng nhồi máu não cấpNghiên cứu vật liệu biến hóa (metamaterials) hấp thụ sóng điện tử ở vùng tần số THzGiáo án Sinh học 11 bài 13: Thực hành phát hiện diệp lục và carôtenôitĐỒ ÁN NGHIÊN CỨU CÔNG NGHỆ KẾT NỐI VÔ TUYẾN CỰ LY XA, CÔNG SUẤT THẤP LPWANĐỒ ÁN NGHIÊN CỨU CÔNG NGHỆ KẾT NỐI VÔ TUYẾN CỰ LY XA, CÔNG SUẤT THẤP LPWANQuản lý hoạt động học tập của học sinh theo hướng phát triển kỹ năng học tập hợp tác tại các trường phổ thông dân tộc bán trú huyện ba chẽ, tỉnh quảng ninhPhát triển mạng lưới kinh doanh nước sạch tại công ty TNHH một thành viên kinh doanh nước sạch quảng ninhTrả hồ sơ điều tra bổ sung đối với các tội xâm phạm sở hữu có tính chất chiếm đoạt theo pháp luật Tố tụng hình sự Việt Nam từ thực tiễn thành phố Hồ Chí Minh (Luận văn thạc sĩ)Nghiên cứu khả năng đo năng lượng điện bằng hệ thu thập dữ liệu 16 kênh DEWE 5000Chuong 2 nhận dạng rui roTăng trưởng tín dụng hộ sản xuất nông nghiệp tại Ngân hàng Nông nghiệp và Phát triển nông thôn Việt Nam chi nhánh tỉnh Bắc Giang (Luận văn thạc sĩ)Tranh tụng tại phiên tòa hình sự sơ thẩm theo pháp luật tố tụng hình sự Việt Nam từ thực tiễn xét xử của các Tòa án quân sự Quân khu (Luận văn thạc sĩ)Giáo án Sinh học 11 bài 15: Tiêu hóa ở động vậtGiáo án Sinh học 11 bài 15: Tiêu hóa ở động vậtGiáo án Sinh học 11 bài 14: Thực hành phát hiện hô hấp ở thực vậtGiáo án Sinh học 11 bài 14: Thực hành phát hiện hô hấp ở thực vậtĐổi mới quản lý tài chính trong hoạt động khoa học xã hội trường hợp viện hàn lâm khoa học xã hội việt namMÔN TRUYỀN THÔNG MARKETING TÍCH HỢPTÁI CHẾ NHỰA VÀ QUẢN LÝ CHẤT THẢI Ở HOA KỲQUẢN LÝ VÀ TÁI CHẾ NHỰA Ở HOA KỲ