Air flows through a long 5-cm diameter pipe at such a velocity that the Reynolds number is 105.The air enters the pipe at a temperature of 20°C. The first portion of the pipe is unheated and the velocity profile becomes fully developed in this portion of the pipe. The second portion of the pipe is heated to a uniform wall temperature of 40°C and has a length of 1.5 m. Determine total heat transferred through the 1.5 m long heated portion and show the variation of the wall heat transfer rate along the flow length of the pipe

Q: Air at 1 atm and 40°C is flowing over the top surface of a 0.2 m x 0.5 m-thin metal foil. The air…

A: Given data: Air at 1 atm pressure and temperature,, is flowing over a thin metal foil of surface…

Q: In a condenser, saturated water vapour flows through cool water pipes, condenses on the surface of…

A: Copper tube diameter, d=4 cm =0.04 mAverage velocity of water through the tube, V=3 m/sWater inlet…

Q: A long aluminum wire of diameter 3 mm is extruded at a temperature of 280°C. The wire is subjected…

A: To find:The rate of heat transfer from the wire to the air per meter length when it is first exposed…

Q: Determine the convection heat transfer coefficient (in W/m2-K) for air flowing at a velocity of 3…

A:

Q: In a gas-fired boiler, water is bein cm-diameter tube submerged in velocity of 7.5 m/s, and leaves…

A: The properties of the air at 1 atm pressure and 300 oC temperature,The mass flow rate of air in the…

Q: Fluid with a density of 736 kg/m² flows inside a 6.0 cm diameter tube at a velocity of 1.3 m/s. The…

A:

Q: Air at p = 1 atm enters a thin-walled (D = 5-mm diameter) long tube (L = 2 m) at an inlet…

A:

Q: Water (cp=4.182 kJ/kg.K, k=0.6405 W/m.K, Pr=3.57, ν=0.5537x10-6 m2/s, ρ=998 kg/m3) flows through a…

A: Solution: Reynold's number=V×Dν=0.2×0.0050.5537×10-6=1806.0321 Since Re<2300, The flow is…

Q: Saturated liquid ammonia is entering a 50 cm diameter 10-m long pipe at a steady 0.1 kg/s mass flow…

A:

Q: The average convection heat transfer coefficient during this cooling process is ____ W/m2·°C

A: Given DataThe steel ballDensity ρ = 8055 kg/m3Specific heat cp = 480 J/kg·KThe diameter  D =0.15…

Q: Air at 10oC enters a 10-cm-diameter and 4-m-long pipe at a rate of 0.035 kg/s. The inner surface of…

A: Given:Air inlet temperature, Tin = 10°CPipe diameter, D = 10 cm = 0.1 mPipe length, L = 4 mMass flow…

Q: Engine oil flows at a rate of 0.05 kg/s through a section of a 2.5 cm diameter tube. The oil enters…

A:

Q: 2- A- Water is to be heated from 15°C to 65°C as it flows through a 3-cm-internal-diameter 5-m-long…

A:

Q: A tube with a square cross-section 2 mm in side and 1.5 m in length imposes a constant heat flux of…

A:

Q: Consider a 50-mm-diameter and 25-m-long smooth tube that is maintained at a constant surface…

A: Write the expression of the average temperature.Here  indicates inlet temperature and  indicates…

Q: Air at p = 1 atm enters a thin-walled (D = 5-mm diameter) long tube (L = 2 m) at an inlet…

A:

Q: A 8-cm diameter pipe is used to deliver hot water to a residence. A 6-m-long horizontal section of…

A: Given:L=6 md=0.08 mTa=20°CTs=72°Cmw=0.03 Kg/sTwi=86°Ck=0.027 W/m°Cv=17.5*10-6 m2/sα=25*10-6…

Q: Water as much as 0.002kg/s at a temperature of 18 °C Flows into a tube with a flow that has been…

A:

Q: Combustion gases passing through a 5-cm-internal-diameter circular tube are used to vaporize waste…

A: Given data is

Q: Determine the length of a tube through which flows a stream of water if the diameter of the tube is…

A: Given Data in this problem is:Diameter of the pipe               =100 mm = 0.1mInlet water…

Q: Engine oil flows at a rate of 0.05 kg/s through a section of a 2.5 cm diameter tube. The oil enters…

A: Given: Mass flow rate of the engine oil→m=0.05 Kg/s Diameter of the tube→D=2.5 Cm=0.025 m Initial…

Q: Liquid water enters a 10-m-long smooth rectangular tube with a = 50 mm and b = 25 mm. The surface…

A: According to the given data L=10m a=50mm=0.05m b=25mm=0.025m Ti=20°C Te=80°C We need to find The…

Q: determine the total power rating of the electronic devices

A: Given: T∞=30°CTs=65°CL=1.5 mb=d=20 cm=0.2 mV=200 m/min=3.33 m/s To determine: The total power rating…

Q: Consider a 50-mm-diameter and 25-m-long smooth tube that is maintained at a constant surface…

A:

Q: Water with a mass flow rate of 0.002 kg/s at 18oC flows inside a tube while the flow is already…

A:

Q: The airflow at 1 atm has a free stream velocity and temperature of 5 cm/s and 25°C, respectively.…

A: Heat transfer coefficient:The quantity of heat energy that is moved from one surface to another as…

Q: Determine the convection heat transfer coefficient (in W/m2-K) for air flowing at a velocity of 8…

A:

Q: 8.62, 8-62 Consider a 10-m-long smooth rectangular tube, with a = 50 mm and b = 25 mm, that is…

A: Write the given information.Write the expression of the mean temperature.Write the properties of…

Q: Liquid water enters a 10-m-long smooth rectangular tube with a -50 mm and b = 25 mm. The surface…

A: Given: The length of tube, L = 10 m The width of tube, a = 50 m The height of tube, b = 25 mm The…

Q: Water at 43.3°C flows over a large square plate at a velocity of 20 cm/s. The plate is 2 m long (in…

A:

Q: Determine the length of the pipe required to cool the pasteurized orange juice from 65 to 22 °C at a…

A: Given:For hot fluid:Thi=65 CThe=22 Cmh=1500 Kg/hrd=3 cm =0.03 mTci=4 CTce=20 CU=900 J/m2sC=3890…

Q: Consider a 10-m-long smooth rectangular tube, with a= 50 mm and b= 25 mm, that is maintained at a…

A:

Q: Water is to be heated from 15 C to 65 C as it flows through a 3 cm internal diameter 5 m long tube.…

A:

Q: Required information Air flows in a pipe under fully developed conditions with an average velocity…

A: To find: The air temperature. Given: The average velocity of the air is vair=1.25 m/s. The initial…

Q: Water (5.0 L/min) is flowing in a tube “D = 3 cm, L= 5 m" and is to be heated from 15°C to 60.3°C by…

A:

Q: How is the Reynolds number related to Darcy-Weisbach?

A: Reynolds number is used to determine the nature of the fluid, Laminar or turbulent fluid.

Q: Find the heat transfer rate of water that enters a tube with a flow rate of 0.015 kg/s and an inlet…

A: Given data: Mass flow rate = m = 0.015 kg/s Inlet temperature = T∞   = 20°C Length of tube = L = 6 m…

Q: 9-94 A hot liquid (c, = 950 J/kg-K) flows at a flow rate PtD of 0.005 kg/s inside a tube with a…

A:

Q: 7-115 Air is to be cooled in the evaporator section of a refrigerator by passing it over a bank of…

A:

Q: Plasma spraying is a process used to coat the surface of a material with a protective layer to…

A:

Q: ombustion gases passing through a 5-cm-internal-diameter circular tube are used to vaporize waste…

A: