Air at 15 psia and 200°F is flowing through a 3-in steel pipe( 3.50-in OD,3.067-in ID) which is covered with a 3-in layer of asbestos. The air velocity is 150 fps, and the film coefficient for the outer surface of the asbestos is ho=8 Btu/hr-ft²-°F;ambient temperature=80°F. Find hi in Btu/hr-ft²-°F. A. 410

Q: The insulation bricks of 0.3 m, and then buildind bricks of 0.2 m were applied to the firebrick of…

A:

Q: piece of beef steak 7 cm thick will be frozen in the freezer room -35 ° C. This product has a…

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Q: 30°C

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Q: For a stream of water (at 32 °C) flowing over a plate at a constant surface temperature of (90 °C)…

A: Given:  T∞ = Twater = 32 oC            Thermal conductivity of water at 32 oC = 0.6 W/m.k…

Q: 5.3-6. Unsteady-State Conduction in a Brick Wall. A flat brick wall 1.0 ft thick is the lining on…

A: To solve this problem, we can use the following equation for unsteady-state conduction in a…

Q: Example 2.1 : Calculate the rate of heat loss through a wall of k = 0.70 W/(m K)] 5 m in length, 4 m…

A: Above problem is based on conductio.Conduction is an mode of heat transfer which is define as the…

Q: The aim is to reduce the thickness of the first steel wall. Between the two walls there is a…

A: Given : Height Thickness Width Expansion rate Weight of wax

Q: The walls of the refrigerated storage room are 10 m long and 3 m high and constructed with 120 mm (k…

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Q: Q1/A steel pipe of outside diameter of (5.1 cm) is insulated with a (0.64 cm) thickness of asbestos…

A: A steel pipe with insulation layers of asbestos and fiber glass are given with following…

Q: Discuss the relationship between drying and quality.

A: In this question relationship between drying and quality is to be discussed.

Q: Use the on-line psychrometric chart (link in this module) to help solve this problem. The surface…

A: Given data: Surface temperature of the steel duct = 18 0C Dry bulb temperature of the surrounding…

Q: A horizontal tube (inner and outside diameters are 2.0 cm and 2.5 cm respectively). is used as…

A: Given, 1Uinner=0.005 (m2–K)/W 1Uoutside=0.008 (m2–K)/W  1Uoverall=1Uinner+1Uoutside…

Q: The temperature at the inside surface of an oven is 460 °F. The inside wall of the oven is made of…

A: Refer to the figure shown below for the given problem statement. The conversion factor used here is…

Q: The gas at an average temperature of 180 oC is transported through a steel (steel-46 W/m2.K) pipe…

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Q: 1. An experimental engine has a quartz window in the cylinder head that is 2.5 cm thick. During…

A: The heat transfer process is a process in which the molecules are moved from the region of higher…

Q: The temperature on one side of a 6-in. thick solid wall is 200°F and the temperature on the other…

A: Given that, Thickness of the solid wall x = 6 in × 1 ft12 in = 0.5 ft Temperature on one side of the…

Q: The gas at an average temperature of 180 oC is transported through a steel (steel-46 W/m2.K) pipe…

A: Heat transfer takes place from a steel pipe through conduction and convection.

Q: A round tube (ID = 60mm, OD = 80mm) carrying liquid ammonia has a constant surface temperature of…

A: Given, Density of air, ρ = 1.225 kg/m3 Inner diameter of the insulation, D = 80 mm +2×8 mm= 96×1…

Q: TEMPERATURE GRADIENTS: A room has external wall with a U-value of 2.5 W/m2 K and contains air at…

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Q: A glass container with an insulating cover with a surface area of (R + 160) cm2 and (R+11) mm thick…

A: Heat transfer is a process by which thermal energy is transferred from a high temperature body to…

Q: The thermal conductivity is directly proportional to the density of the gas. O No O yes

A: Thermal conductivity is a fabric property. It will no longer range with the dimensions of a…

Q: A piece of beef steak 5 cm thick will be frozen in the freezer room -25 ° C. This product has a…

A: Given: Thickness of the beef steak, a = 5 cm = 0.05 m Freezer room temperature, Ta = -25°C = 248 K…

Q: A 3-inch Sched 40 steel pipe has a thermal conductivity of k = 15 W/m ° C covered with a 2.5 cm…

A: Given data: Dimension of pipe = 3 in schedule 40 kpipe = 15 W/m.0C Thickness of insulating material…

Q: A piece of beef steak 5 cm thick will be frozen in the freezer room -30 ° C. This product has a…

A: Given data: Operating temperature freezer room = –30 0C Thickness of beef steak = 5 cm Density of…

Q: A pipe has a 120 °C inside surface temperature, 10 cm inside diameter, 6 mm wall thickness and 30…

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Q: Consider that an iron is forgotten to be open throughout two days while its surface temperature is…

A: As given heat transfer is taking from iron to air ,it is a convection mode of heat transfer.…

Q: A thick-walled tube of stainless steel(Ks=19.0 W/m.°C)  with 2-cm inner diameter (ID) and 4-cm outer…

A: Given r1 =2/2= 1 cm r2 = 4/2=2 cm r3 = (2 + 3)/2= 2.5cm ks =19.0 W/m.°C ka =0.2 W/m.°C Interior…

Q: An 8×8 in test panel, 1 inch thick is placed between two plates, and the whole is properly…

A: Heat transfer is the process of transferring the heat from the higher temperature to the lower…

Q: A rubber insulated copper wire 2 mm diameter is carrying electric current and exposed to a uniform…

A: Given: The diameter of pipe is d = 2 mm = 0.002 m Insulation thickness t = 1 mm = 0.001 m, Consider…

Q: A two layer wall is to be constructed having dimensions 4 m (width ) by 3.0 m (height). The wall is…

A: Given data: Height of wall = 3 m Width of wall = 4 m Thermal conductivity of brick = 0.72 W/m.0C…

Q: A food product with 73% moisture content in a 5 cm diameter can wants to be frozen. The density of…

A: Given data: Density of the product = 970 kg/m3 Thermal conductivity of the product = 1.2 W/m∙K…

Q: A thick cylindrical pipe with length of 1 m and an inner diameter of 20 mm and an outer diameter of…

A:

Principal Quantities and EOS

A physical quantity represents the physical state of a system. It is expressed as the product of a number and unit. The basic quantities used in science are length, mass, and time. The principal quantities are the quantities that are independent of other quantities.