HEAT+MASS TRANSFER:FUND.+APPL. - 6th Edition - by CENGEL - ISBN 9780073398198
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HEAT+MASS TRANSFER:FUND.+APPL.
6th Edition
CENGEL
Publisher: RENT MCG
ISBN: 9780073398198

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Given: Total heat transfer, Q˙total=1000 W Air Temperatures TA=20°C Surface area As=0.02 m2...Given: Ambient temperature is 50°C , convection heat transfer coefficient is 5 W/m2k andsurrounding...Given: Outdoor Temperatures To=25°C Diameter of tank D = 3 m Surface Temperatures Ts=0°C Emissivity...Given: Surface area As=5 m2 Absorbity of the solar radiation α=93 % Temperature TS=40°C Surrounding...Given information: Specific heat of valve at constant pressure ( cp ) is 440J/kg K Density of valve...Given information: Length of electric resistance heating element is 40cm=0.4m. Diameter of electric...Given information: The emissivity of electric heater is 0.75 . Surface area of electric heater is...Given information: The temperature of surrounding air is 20°C . The temperature of surrounding walls...Heat transfer is classified as follows: Steady state heat transfer Transient state heat transfer The...Given information: The thermal conductivity remains constant and there is no heat generation. The...Given information: The thickness of the ring is r and the thermal conductivity remains constant....Given information: The thickness of the steel plate is 20 mm , the emissivity of the outer surface...Given information: The temperature of hydrocarbon fluid leaving the reservoir is 70°C , the...Given information: Flashpoint of ethanol is 16.6°C , inside diameter is 3 cm , wall thickness is 3...Given information: The inner radius of the spherical container is 2 m ,outer radius is 2.1 m ,...Given information: The thickness of the plate is L , thermal conductivity of the plate is k" , heat...Given information: The thickness of the wall is 0⋅5 m , thermal conductivity of the wall is 30 w/m⋅K...Given information: The thermal conductivity of the wire 15.2 W/m⋅K , outer radius of the resistance...Given information: The length of wire is 6 m , maximum energy stored is 2 kW , the diameter of...Given information: Thickness of the wall is 20 cm , temperature on the inside is 22°C , temperature...Given information: The convective heat transfer coefficient is 30 W/m2⋅K , ambient air temperature...Given information: The thickness of metal plate is 3 cm , the thermal conductivity of metal plate is...Given information: The length of the pipe is L , The inner radius of the pipe is r1 , outer radius...Given information: The length of the stack is 10 m , outer diameter of the stack is 1 m ,thickness...Given information: The length of the cylinder is 35 ft , the inner radius is 2 in , the outer radius...Given information: The length of the cylinder is 6 m , the inner radius is 3.7 cm , the outer radius...Given information: The length of the cylinder is 17 m , the inner radius is 15 cm , the outer radius...The temperature distribution of a wall with thickness L and area A is shown in the figure below: The...Given: The mode of operation is a steady operation. The length of the window L=1.5 m , the breadth...Given: The height of the window H=1.5 m , the width of the window B=2.4 m , the thickness of both...Given: The height of the window H=1.5 m , the width of the window B=2.4 m , the thickness of both...Given information: The base area of the house = 10-m by 20-m The height of the wall = 4m R-value of...Given: The height of the walls of the house H=12 ft ,the length of the walls of the house L=40 ft ,...Given information: Dimension of kiln is = 40m×5m×4m Thickness of concrete wall = 20 cm Thickness of...Given: Cross section area of wall Ac=12 m × 5 m = 60 m2 Thickness of sheetrock in section A ta=1 cm...Given information: Length of the wall is = 30 ft Height of the wall is = 10 ft Cross section area of...Given: The thickness of the slab L = 25 mm. Thermal conductivity of the slab is k=0.023 W/m⋅K...Given information: Given diagram is shown below. Thermal conductivity of stainless steel plate ks=13...Given information: According to table 3-3 For straight rectangular fins m= 2h ktLc=L+t/2Afin=2wLc...Given information: Length of pipe is 4 m . The thickness of the pipe is 0.4 cm . The thermal...Given information: The heat transfer rate Q˙fin is defined as Q˙fin=ηfinhAfin(Tb−T∞) In the above...Given information: Outer diameter of the tube is 5 cm . The temperature at the walls of the tube is...Given information: The circuit board has 0.4 cm,12 cm,18 cm of thickness, height and length...Given information: Surface temperature is 100°C . The length and diameter of fins is 3 cm, 0.25 cm ....Given information: The length and diameter of fins is 1 mm, 30 mm . Thermal conductivity is 380...Given information: Consider a climate change from −20°C to 20°C . Find metabolic heat generation for...Given information: Convective heat transfer co-efficient air and water is 2 W/m2K and 20 W/m2K...Given information: Ambient air temperature is at 30°C . The skin/fat layer thickness of the person...Given information: Muscle thickness rm . Skin/fat layer thickness tsf . Metabolic heat generation...Given information: dimension of wood studs = 38mm×140mmcenter distance = 400mmdimensions of cavity =...Given information: Thermal conductivity of steel k=61 W/m.K Inner Diameter di=10 cm Outer Diameter...Infinity long pin means when we go through the pin temperature gradually reduce and reach to the...The Biot number is defined as the ratio of internal conduction resistance to the external convection...Given information: Concrete:−k=0.79 w /m.k, α=5.94×10−7m2/s, Cp=0.84kJ/kg⋅K and ρ=1600kg/m3 Diameter...Given: The mass of the rib is m=3.2 kg . The time to roast a rib is t=2 hr 45 min . The thermal...Given: The mass of the rib is m=3.2 kg . The time to roast a rib is t=4 hr 15 min . The thermal...Given Information: Length of the cubic block =5cm Height of the cylindrical block =5cm Diameter of...Given Information: Length of the cubic block =5cm Height of the cylindrical block =5cm The diameter...Given: The thermal conductivity of a hot dog isk=0.44 Btu/hr⋅ft⋅°F . The thermal diffusivity of a...Given: The height of the rectangular block is H=6 cm . The heat transfer coefficient of ice block is...Given: The thermal conductivity of a hot dog isk=2.22 W/m⋅K . The thermal diffusivity of a hot dog...Given: The diameter of the brass cylinder d = 4 cm The height of the brass cylinder h = 20 cm The...Given: The thermal conductivity of cylinder isk=237 W/m⋅K . The thermal diffusivity of cylinder...Given: The length of the cylindrical aluminum block isL=30 cm . The diameter of the cylindrical...Given: The length of the cylindrical aluminum block isL=30 cm . The diameter of the cylindrical...Given: The width of the manganese steel plate is 2 m . The thickness of the manganese steel plate is...Given: The density of aluminum wire is 2702 kg/m3 . Thermal conductivity of aluminum wire is 236...Given: The density of copper wire is 8950 kg/m3 . Thermal conductivity of copper wire is 386 W/m⋅K ....Given: The density of aluminum rod is 2702 kg/m3 . Thermal conductivity of aluminum rod is 237 W/m⋅K...Given: Mass of Turkey is 14 lbm . Initial temperature of Turkey is 40°F . Oven temperature is 325°F...Given: The thermal conductivity of engine is k=52 W/m⋅K . The thermal diffusivity of engine is...What is the difference between the upstream velocity and the free-stream velocity? For what types of...What is natural convection? How does it differ from forced convection? What force causes natural...

More Editions of This Book

Corresponding editions of this textbook are also available below:

Heat and Mass Transfer: Fundamentals and Applications
5th Edition
ISBN: 9780073398181

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