Oil whose temperature is 30°C is flowed through a pipe with a diameter of 50 cm.  The pipe is in an environment where the temperature is 20°C.  So that not a lot of heat comes out of the pipe, the pipe is wrapped with an insulating material (k = 0.007 W/mK) as thick as 5 cm.  If the convection coefficient of the outer surface of the pipe is 12 W/m²K, calculate the heat flow from the pipe per meter of length

Q: Consider a 10m deep wall with a cross section as shown below. If the temperature on the left side of…

A:

Q: A 278-ft-long section of a steam pipe whose outer diameter is 4 inches passes through an open space…

A:

Q: a hot fluid of 200 °C.  How long does it take the rod temperature to reach 70% of the fluid…

A:

Q: A spherical tank with internal diameter of 2 m made of 2.0-cm-thick stainless steel (k=15 W/m.K) is…

A: Note: As per our guidelines we are supposed to answer only the first 3 sub-parts. Kindly repost…

Q: A hot-water pipe (k = 50 W/m K) for house heating in winter season, made of 3/4-inch schedule 40…

A: The given information in the problem is represented in the following attached image:

Q: A homeowner wants to reduce their monthly heating bill and carbon footprint and is considering…

A:

Q: A hot surface at 100 °C is to be cooled by attaching 3-cm-long, 0.25-cm-diameter aluminum pin fins…

A:

Q: A 6 cm diameter cylinder is initially at a temperature of 10 °C. Later, this cylinder was thrown…

A:

Q: You are trying to assess the performance of a heat sink with fins. It has straight rectangular…

A:

Q: Airat temperature of 120 °C is contained in a thin-wall steel tube with heat-transfer coefficient 65…

A: Dear student, I have calculated overall heat transfer coefficient on the basis of inner and outer…

Q: 2. Compare the heat loss from insulated and uninsulated copper pipe (k-400 W/m K) under the…

A: Given:The thermal conductivity of the copper is The pipe internal diameter isThe pipe outside…

Q: You would like to use straight pin fins, with a diameter of 6 mm and length of 4 cm, to cool a…

A: Given, Pin fin dimensions d=6 mm L=4 cm k=205 W/m oC h=25 W/m2 oC No. of fins N=25 Baseplate…

Q: A spherical object with a temperature of 700 oC, made of carbon steel with a diameter of 3 cm, will…

A: Given:Tb=700°Cd=3 cmT=370°CT∞=35°Ch=90 W/m2Kk=75 W/mKC=480 J/KgK

Q: A long pipe carrying hot water loses heat to the ambient air. The heat loss was measured to be 480…

A: To find: The convection coefficient of the air. Given: The heat flux is q˙=480 W/m2. The temperature…

Q: If q" w = 5000 and the convection heat transfer coefficient at the pipe outlet is 1000 W/m2K,…

A:

Q: A 268-ft-long section of a steam pipe whose outer diameter is 4 inches passes through an open space…

A:

Q: A spherical object with a temperature of 700 oC, made of carbon steel with a diameter of 3 cm, will…

A:

Q: The inside surface of an insulation layer is maintained at 350oC and the outside surface dissipates…

A:

Q: The wall of a 5 m high cylinderical steel tank (ks= 20 W/mK) of inner diameter 1.5 m and 200 mm…

A: The length of cylinder is .The thermal conductivity is .The inner diameter is .The thickness of…

Q: Hot gases at 278 ºC flow on one side of a metal plate of 10 mm thickness and air at 48 ºC flows on…

A:

Q: A steel pipe having a 0.05m outer diameter is covered with a 0.042 m thick layer of magnesia (kes…

A: Givend=0.05mt1=0.042mkmg=0.07 W/m.Kt2=0.024mkf=0.048 W/mKT1=370KT3=305 K

Q: Steam at 200 oC flows in a cast iron pipe (k = 70 W/m.K) whose inner and outer %3D diameters are D1…

A:

Q: A pipe is used to transport refrigerant R-134a with an inner radius of 0.03m, outer radius of 5 cm,…

A: Given:To find:Temperature distribution and rate of heat gain per unit length.

Q: ansfer coeffic ndings is 5 e heat loss

A:

Q: The hot water pipe of a heating system, 20 m long and 8 cm in diameter, was buried 80 cm below the…

A: To Find : The heat loss rate in the pipe. Given : The lenght of pipe is l=20 m The diameter of pipe…

Q: 1) Hot water at an average temperature of 60°C is flowing through a 10-m section of a cast iron pipe…

A:

Q: In a thermal power plant, a horizontal copper pipe of "D" diameter, "L" length and thickness 1.9 cm…

A:

Q: Steam at 230°C is flowing through a steel pipe (k = 15.1 W/m-K) whose inner and outer diameters are…

A:

Q: Warm air is blown over the inner surface of the windshield of an automobile to defrost ice…

A:

Q: A long 50-cm diameter cylindrical shaft (k = 15 W/m·K, p= 7900 kg/m², C, = 477 J/kg-K) comes out of…

A: Given: The diameter of the cylinder, d = 50 cm = 0.5 m The thermal conductivity of the shaft, k = 15…

Q: Air enters a 7-cm-diameter and 5-m-long tube at 65°C and leaves at 15°C. The tube is observed to be…

A: The diameter of the pipe is d=7 cm=0.07 m . The length of the pipe is L=5 m. The convective heat…

Q: A cold storage wall, whose components and dimensions are given below, is formed by connecting layers…

A:

Q: 2. For a boiling process such as shown in Figure below, the ambient temperature Tin Newton's law of…

A: Given:Heat flux, q=20*105 W/m2Convective heat transfer coefficient of water, hw=20*103…

Q: A 3.5 cm pipe carrying a condensing steam at 101 kPa passes through the center of an infinite plate…

A:

Q: The wall of a cold storage is made of 16 cm thick brick, the outer part, then 10 cm thick plastic…

A:

Q: A 3.5 cm pipe carrying a condensing steam at 101 kPa passes through the center of an infinite plate…

A: Here I am going to find the shape factor of pipe which is centrally inside a plate

Q: A steel pipe 50 cm in length has an inside diameter of 9 cm with a wall thickness of 15 mm. The…

A:

Conduction and Convection

When energy travels from one object to another it is said to have undergone heat transfer. Heat transfer is nothing but the transfer of thermal energy or internal energy from one thing to another, like e.g., when a vessel with water, kept on top of a burner, heats up because of the flame underneath it.