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Ebook Principles of heat transfer (7th edition): Part 1

(BQ) Part 1 book "Principles of heat transfer" has contents: Basic modes of heat transfer, heat conduction, numerical analysis of heat conduction, analysis of convection heat transfer, natural convection. | 67706_IFC.qxd 5/14/10 7:30 AM Page ii Conversion Factors for Commonly Used Quantities in Heat Transfer Quantity English : SI* SI : English Area 1 m2 ϭ 10.764 ft2 ϭ 1550.0 in2 1 ft2 ϭ 0.0929 m2 1 in2 ϭ 6.452 ϫ 10Ϫ4 m2 Density 1 kg/m3 ϭ 0.06243 lbm/ft3 1 lbm/ft3 ϭ 16.018 kg/m3 1 slug/ft3 ϭ 515.38 kg/m3 Energy† 1 J ϭ 9.4787 ϫ 10Ϫ4 Btu 1 1 1 1 Energy per unit mass 1 J/kg ϭ 4.2995 ϫ 10Ϫ4 Btu/lbm 1 Btu/lbm ϭ 2326 J/kg Force 1 N ϭ 0.22481 lbf 1 lbf ϭ 4.448 N Heat flux 1 W/m2 ϭ 0.3171 Btu/(h и ft2) 1 Btu/(h и ft2) ϭ 3.1525 W/m2 1 kcal/(h и m2) ϭ 1.163 W/m2 Heat generation per unit volume 1 W/m3 ϭ 0.09665 Btu/(h и ft3) 1 Btu/(h и ft3) ϭ 10.343 W/m3 Heat transfer coefficient 1 W/(m2 и K) ϭ 0.1761 Btu/(h и ft2 и °F) 1 Btu/(h и ft2 и °F) ϭ 5.678 W/(m2 и K) Heat transfer rate 1 W ϭ 3.412 Btu/h 1 Btu/h ϭ 0.2931 W 1 ton ϭ 12,000 Btu/h ϭ 3517.2 W Length 1m ϭ 3.281 ft ϭ 39.37 in 1 ft ϭ 0.3048 m 1 in ϭ 0.0254 m Mass 1 kg ϭ 2.2046 lbm 1 lbm ϭ 0.4536 kg 1 slug ϭ 14.594 kg Mass flow rate 1 kg/s ϭ 7936.6 lbm/h ϭ 2.2046 lbm/s 1 lbm/h ϭ 0.000126 kg/s 1 lbm/s ϭ 0.4536 kg/s Power 1 W ϭ 3.4123 Btu/h 1 1 1 1 Btu/h ϭ 0.2931 W Btu/s ϭ 1055.1 W lbf и ft/s ϭ 1.3558 W hp ϭ 745.7 W Pressure and stress (Note: 1 Pa ϭ 1N/m2) 1 N/m2 ϭ ϭ ϭ ϭ 1 1 1 1 lbf/ft2 ϭ 47.88 N/m2 psi ϭ 1 lbf/in2 ϭ 6894.8 N/m2 standard atmosphere ϭ 1.0133 ϫ 105 N/m2 bar ϭ 1 ϫ 105 N/m2 0.02089 lbf/ft2 1.4504 ϫ 10Ϫ4 lbf/in2 4.015 ϫ 10Ϫ3 in water 2.953 ϫ 10Ϫ4 in Hg Btu ϭ 1055.06 J cal ϭ 4.1868 J lbf и ft ϭ 1.3558 J hp и h ϭ 2.685 ϫ 106 J Copyright 2011 Cengage Learning, Inc. All Rights Reserved. May not be copied, scanned, or duplicated, in whole or in part. 67706_IFC.qxd 5/14/10 7:30 AM Page iii Conversion Factors for Commonly Used Quantities in Heat Transfer (Continued) Quantity SI : English English : SI* Specific heat 1 J/(kg и K) ϭ 2.3886 ϫ 10Ϫ4 Btu/(lbm и °F) 1 Btu/(lbm и °F) ϭ 4187 J/(kg и K) Surface tension 1 N/m ϭ 0.06852 lbf/ft 1 lbf/ft ϭ 14.594 N/m 1 .