Heat Transfer Consider a infinitely long pin fin with uniform Ac cross sectional area Write ef effectiveness and Af efficiency
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Q: Blowtorch is used to connect the two pipes together. Length of the pipe section shown is 95 cm with…
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Q: A wall is 6.1 m wide 2.4 m hight and has an overall heat transfer coefficient of 0.4 W/m? °C. It…
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Q: Blowtorch is used to connect the two pipes together. Length of the pipe section shown is 80 cm with…
A: Given: l=0.8m; d=0.7m; t=3mm; k=177 W/m2K; ambient temperature is 25 C; h=20 W/mK; Tb=220 C
Q: n has a heat loss of 6 W. The effectiveness of the fin is 3 and efficiency of the fin is 0.75 , what…
A: Given:actual heat transfer, Qa=6 Wefficiency of fin, η=0.75effectiveness of the fin, ε=3Find,The…
Q: A rectangular fin (k= 180 W/M••C): with AC=0.003 m2 , P =2 m and L 0.07 m protrudes from a wall. The…
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Q: An electric wire having a diameter of 1.5 mm and covered with a plastic insulation (thickness = 2.5…
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Q: PROBLEM 3 In the given schematic of heat transfer for a wall, there is heat conduction through the…
A: For the solution refer below images.
Q: Consider the 2D heat conduction problem for a plane fin (see the figure below)Find/derive the heat…
A: Heat transfer through the fin can be obtained using Fourier law of heat conduction equation-
Q: fin made of AL metal with thermal conductivity (199 W / mK). Fin dimensions 3 cm long and 2.5 mm…
A: given data: fin metal : Al : k = 199 W/mK length; l = 0.03 m thickness; t = 2.5 mm wall temperature;…
Q: A long copper fin (k = 380 W/mK), whose length is 610 mm and diameter 6 mm is subjected to an…
A: The answer is given below
Q: 4. A wall of thickness 10cm conducts heat at rate of 30W/m² when the temperature difference across…
A: Given, Wall thickness = Δx = 10 cm = 0.1 m Heat rate (flux) = q' = 30 W/m2 Temperature difference…
Q: Blowtorch is used to connect the two pipes together. Length of the pipe section shown is 150 cm with…
A: Given data: Here, L represents the length, di represents the internal diameter, t represents the…
Q: A metal rod 1 sq.in in cross section and 6 in long heated at one end and cooled at the other. If the…
A: Given Data⇒ Area of metal rod(A)=1 in2 Convert in m2 A=0.00064 m2 Length of metal rod(L)= 6 in…
Q: Why did you divide by 2 the thermal conductivity of E,F,B and C? Why not use parallel resistance…
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Q: Find the conduction resistance of a composite plane wall made of three materials of conductivity 100…
A: Here this will be the thermal circuit for the composite walls with materials of conductivity 100…
Q: Blowtorch is used to connect the two pipes together. Length of the pipe section shown is 150 cm with…
A: Given: L = 150 cm t = 4 mm Di = 85 cm Do = Di + 2t = 85 + 8 = 93 cm thermal conductivity, k = 167…
Q: In a thermal power plant, a horizontal copper pipe of "D" diameter, "L" length and thickness 1.2 cm…
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Q: A slender rod of length L, diameter d (L >> d) and thermal conductivity k1 is joined with another…
A: Given:one Slender rod of length L and thermal conductivity k1Second slender rod of length L and…
Q: For the composite wall shown, calculate T,. Assume 1-D steady conduction and neglect thermal contact…
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Q: Calculate the heat transfer rate per metre length when a steel pipe conveying steam is insulated.…
A: Given details: T∞1=300°CT∞2=20°Cdi=20 cm=0.2 mdo=30 cm=0.15 mt=10 cm =0.1 mki=0.1 W/m-kkpipe=80…
Q: eat loss from a fin is 6 W . The effectiveness and efficiency of the fin are 3 and 0.75 respectively…
A: Given:actual heat transfer, qa=6 Wefficiency of fin, η=0.75
Q: A steam pipe 20cm in diameter is protected with a covering 6cm thick for which the coefficient of…
A: When heat flows radially from inwards to outwards in a cylindrical pipe then, a thermal resistance…
Q: The rate of heat generation per unit volume in a plane wall of thickness 30 mm can be modeled as:…
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Q: Thermal Conductivity Problems: a. A wall is made of firebrick 6 inches thick and has a 50°C…
A: GivenPart at=6inch=0.5ft∆T=50oC=(50°C × 9/5) + 32 = 122°F K=0.65BTU/hr-ft-FoPart…
Q: Q1: Consider a long resistance wire of radius r1 = 0.3 cm and thermal conductivity kwire = 17 W/m.°C…
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Q: given convective heat transfer coefficient of inside air = 18.23 W/m2K, find the temperature of…
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Q: For steady state heat conduction in a composite wall (As = 5 m², LA=1 cm and LB =2 cm) as shown in…
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Q: The 1-4-7 surface in the section shown in the figure is insulated. The heat transfer coefficient on…
A: Given Data:- T∞=0∘Ch=28W/m2CT7=T8=T9=38∘CT3=T6=10∘C∆x=∆y=15cm=0.15m
Q: A steel pipe with heat transfer coefficient of 42 W/mK contains flowing water. The outer diameter of…
A: A steel pipeheat transfer coefficient K = 42 W/mKOuter diameter of the pipe Do = 90 mmFor r1Di =…
Heat Transfer
Consider a infinitely long pin fin with uniform Ac cross sectional area
Write ef effectiveness and Af efficiency
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- Blowtorch is used to connect the two pipes together. Length of the pipe section shown is 150 cm with an inner diameter of 85 cm. The thickness of the pipe wall is 4 mm. The conductivity of the pipe section is 167 Wim^2K. Environment has a temperature of 30 C and convective heat transfer coefficient of 28 WI(mC), find the required heat transfer to join the pipe sections at 220 C? HINT: Assume that the welding section is the base plate and the pipe is 1D extended surface (fin) symmetric about the torch melting line. Heat transfer happens by conduction along the pipe thíckness in horizontal direction and by convection to the environment. Length thickness Torch melting line 200 W 275 W none 314 W 453 WDONT DO PROBLEM 4 it just here for reference. DO THE OTHER PROBLEM.Blowtorch is used to connect the two pipes together. Length of the pipe section shown is 80 cm with an inner diameter of 70 cm. The thickness of the pipe wall is 3 mm. The conductivity of the pipe section is 177 W/m^2K. Environment has a temperature of 25 C and convective heat transfer coefficient of 20 W/(mC) , find the required heat transfer to join the pipe sections at 220 C? HINT: Assume that the welding section is the base plate and the pipe is 1D extended surface (fin) symmetric about the torch melting line. Heat transfer happens by conduction along the pipe thickness in horizontal direction and by convection to the environment. Length thickness Torch melting line
- The steel pipe has an internal radius of 50 mm., a thickness of 5 mm. and a length of 5 m. Inside the pipe, hot fluid with temperature 80 C flows inside the pipe and cold fluid with temperature 20 C flowing outside the pipe. Let k=285 W/mC and hi= 25 W/mC, ho= 10 W/mC. Find 4.1) Heat Transfer Rate (Q) 4.2) Temperature on both inner and outer tube surfaces...Plz help If possible write solution nearly Answer what u can & I will repost for other parts thanksFor steady state heat conduction in a composite wall (As = 5 m², LA=1 cm and LB =2 cm) as shown in below figure. Calculate the total thermal resistance and the rate of heat transfer from the wall also find the temperatures Ts1, Ts2 and Tc To,z=200°C h₂=10W/m².K KA=0.1 W/m-K T5,1 HL-L₂ 17 Tc Too,2 = 40°C h₂-20W/m².K k=Q04 W/m-K
- A long copper fin (k 380 W/mK), whose length is 610 mm and diameter 6 mm is subjected to an environment, where the heat transfer takes place. The heat transfer coefficient is 20 W/m?k. Find the efficiency of fin.Blowtorch is used to connect the two pipes together. Length of the pipe section shown is 150 cm with an inner diameter of 85 cm. The thickness of the pipe wall is 4 mm. The conductivity of the pipe section is 167 W/m^2K. Environment has a temperature of 30 C and convective heat transfer coefficient of 28 WI(mC), find the required heat transfer to join the pipe sections at 220 C? HINT: Assume that the welding section is the base plate and the pipe is 1D extended surface (fin) symmetric about the torch melting line. Heat transfer happens by conduction along the pipe thickness in horizontal direction and by convection to the environment. Length thickness Torch melting lineA slender rod of length L, diameter d (L >> d) and thermal conductivity k1 is joined with another rod of identical dimensions, but of thermal conductivity k2, to form a composite cylindrical rod oflength 2L. The heat transfer in radial direction and contact resistance are negligible. Find the effectivethermal conductivity of the composite rod.
- K spherical shaped vessel of 1.2 m diameter is 100 mm thick. Find the rate of heat leakage, if the temperature difference between the inner and outer surfaces is 200° C. Thermal conductivity of material is 0.3 kJ /mh°C.Thermal Conductivity of Aluminum is 200 steel is 20 G10 Fiberglass 0.3The heat flow per unit length of a thick cylindrical pipe is 772 W per meter. The pipe has radii ri = 12 cm, ro = 24 cm, outside surface temperature, To = 95 deg C and k = 0.05 + 0.0008T where T is in deg C and k is in W/(m K). Find the inside surface temperature of the pipe, assuming steady state conditions and accounting for the variation of thermal conductivity with temperature. Also determine the temperature of a point midway to the inside and outside radius.