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

A:

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

A:

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

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: 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…

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.