Q16: In a nuclear reactor, heat is generated in 1-cm diameter cylindrical uranium fuel rods at a rate of 4 x107 W/m?. Determine the temperature difference between the center and the surface of the fuel rod.
Q: OA l-m long hollow cylinder of inner radius 5 cm and outer radius 15 cm is considered. The inner…
A: Given data: The length of the cylinder, L = 1 m. The inner radius of the cylinder, ri = 5 cm. The…
Q: Consider a solid sphere of radius r=50 cm. The heat is generated steadily inside the sphere at a…
A: Given Data r=50 qg=1500 wm3 K=10 wm.K T∞=10oC h=125 Wm2K The temperature of the center of sphere,…
Q: In a nuclear reactor, heat is generated in 1-cn diameter cylindrical uranium fuel rods at a rate of…
A: Given Diameter, d = 1 cm Heat generation, q = 4x 107 W/m3 Thermal…
Q: Two metal rods are being heated in an oven with uniformambient temperature of 1000°C and convection…
A: Given Data: Ambient temperature is: T∞=1000 °C Convective heat transfer coefficient is: h=25 W/m2 K…
Q: Question 2 Steam at 320ºC flows in a stainless steel pipe, whose inner and outer diameters are D₁ =…
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Q: A 4-mm-diameter, 10-cm-long aluminum fin (k = 237 W/m-K) is attached to a surface. If the heat…
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Q: Q2/ The wall of a refrigerator is constructed of fiberglass insulation (k=0.035 W/ m. C) sandwiched…
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Q: Q18: Heat is generated uniformly at a rate of 2.6 x10 w/m³ in a spherical ball (k = 45 W/m - "C) of…
A: Given Data: The rate of heat generation is q˙=2.6×106 W/m3. The thermal conductivity of the…
Q: .A journal bearing is to be used for a centrifugal pump where the shaft diameter is 50 mm and the…
A: Given that, Shaft diameter = D = 50 mm Bearing length = L = 80 mm Ambient temperature = T∞=20 °C…
Q: Water (C = 4180 J/kg-K) enters a 4- cm-diameter tube at 15°C at a rate of 0.06 kg/s. The tube is…
A: Given:Cp=4180 J/kg.Kd=4cm=0.04mm=0.06 kg/sTi=15°Cqs=2500 W/m2To=45°CTo find:-Length of tube, L
Q: Q1) Consider the base plate of a 800-W household iron having a thickness of L=0.6 cm, base area of…
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Q: The 5-mm-thick bottom of a 200-mm-diameter pan may be made from aluminum (k 240 W/m K) or copper (k…
A: Given data The 5-mm-thick bottom of a 200-mm-diameter aluminum (k = 240 W/m K) copper (k = 390…
Q: H.W. Q: An aluminum pan whose thermal conductivity is 237 W/m-°C has a flat bottom with diameter 20…
A: Heat transfer by conduction is given by Fourier's law Q=-kAlA dTdx the temperature gradient decrease…
Q: A long 35-cm-diameter cylindrical shaft made of stainless steel 304 (k = 14.9 W/m·K, r = 7900 kg/m3,…
A: Given data Diameter of cylindrical shaft of stainless steel d = 0.35 cm = 0.35m so radius = 0.175m…
Q: In a thermal power plant, a horizontal copper pipe of "D" diameter, "L" length and thickness 1.9 cm…
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Q: In a cylindrical nuclear reactor fuel rod, heat is generated internally according to the equation:…
A: Given data: Rod radius, R=0.0125 mThermal conductivity, k=26 WmKHeat transfer from the surface,…
Q: any relationship between inlet, outlet diameter and Effectiveness in heat transfer? How outlet and…
A: This question is related to heat and mass transfer. effectiveness is defined as the ratio of actual…
Q: Q16: In a nuclear reactor, heat is generated in 1-cm diameter cylindrical uranium fuel rods at a…
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: The steel rod (k=43 W/m.K) has 0.3 m is located between two walls seen in figure. The left and right…
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Q: A long homogeneous resistance wire of radius r0 = 2 cm, and thermal conductivity k = 25 W/m°C is…
A: Generalised equation in case of cylinder for 1 dimension:1r∂∂r(r∂T∂r)+qk=0∂∂r(r∂T∂r)=-qrkIntegrating…
Q: 210: In a nuclear reactor, 1-cm-diameter cylindrical uranium rods cooled by water from outside serve…
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Q: Q2 : A 2 kW resistance heater wire with thermal conductivity of k 20 W/m °C, a diameter of D=5 mm,…
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Q: In a cylindrical fuel rod of a nuclear reactor, heat is generated internally according to the…
A: Given: The diameter of the rod is do = 25 mm. The thermal conductivity is k = 26 W/m-K. Heat…
Q: Consider a stainless steel spoon (k = 15 W/m·K) partially immersed in boiling water at 95°C in a…
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Q: stainless steel plate at 100◦C faces a firebrick wall at 500◦C.Esti- mate the heat flux and…
A: Solution as follows
Q: In a thermal power plant, a horizontal copper pipe of "D" diameter, "L" length and thickness 1.9 cm…
A: Given Temperature, T1 = 102oC T2 = 34oC Heat transfer rate, Q =…
Q: Q1: In a nuclear reactor, heat is generated uniformly in the 5-cm-diameter cylindrical uranium rods…
A: Given data: Diameter of the rod (d) = 5 cm Rate of energy generation E˙=7×107 W/m3 Length of the rod…
Q: Q1: In a nuclear reactor, heat is generated uniformly in the 5-cm-diameter cylindrical uranium rods…
A: givendiameter of cylinder d=5cm=0.05mheat generated uniformaly Q=7×107W/m3length of rod L=1m
Q: A long 20 cm diameter shaft made of stainless steel 304 comes out of an oven at a uniform…
A:
Q: Q16: In a nuclear reactor, heat is generated in 1-cm diameter cylindrical uranium fuel rods at a…
A: The value of thermal conductivity is not given so I have assumed some standard value for uranium.
Q: rate of (15000) W/m³. The conductivity of the sphere is 10 W/m.K. Surface of the sphere is cooled by…
A: Here, given values..
Q: Two rods ( fins) having same dimensions , one made of brass ( k = 85 Wm K) and the other of copper (…
A: Given data: - The thermal conductivity of brass rod is kB = 85 W/m-K. The thermal conductivity of…
Q: An aluminium pan whose thermal conductivity is 237 W/m/°C has a flat bottom whose diameter is 20 cm…
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Q: 2. An 18-cm-long, 16-cm-wide, and 12-cm-high metal block (p = 8000 kg/m', c, = 400 J/kg C, k=200…
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Q: Consider a stainless steel spoon (k ! 8.7 Btu/h · ft · "F) partially immersed in boiling water at…
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Q: A heater plate measures 40 cm x 40 cm in the tank and is kept at a constant temperature of 70…
A: Given data: A = 40 cm x 40 cm Tp = 70o C Toil = 30o C ν=0.00026 m2 / s k=0.15 W / mK Pr=2900 Need to…
Q: Q2: A long 25 cm diameter cylindrical shaft made of stainless steel 304 comes out of an oven at a…
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Q: The concrete slab of a basement is 11 m long, 8 m wide, and 0.20 m thick. During the winter,…
A: Parte) Write the Fourie heat conduction expression. Now substitute the required value in the above…
Q: In a nuclear reactor, 1-cm-diameter cylindrical uranium rods cooled by water from outside serve as…
A: The temperature distribution represents the temperature at finite points on the surface. The…
Q: Q6: Consider a solid cylindrical rod of length 0.15 m and diameter 0.05 m. The top and bottom…
A: Given Length, l = 0.15 m Diameter, d = 0.05 m Temperature, T1= 20oC…
Q: Q1: In a nuclear reactor, heat is generated uniformly in the 5-cm-diameter cylindrical uranium rods…
A: We are suppose to solve only one question. Please post other questions as separate question.
Q: An aluminum pan whose thermal conductivity is 237 W/m*^ C has a flat bottom whose diameter is 20 cm…
A: Given-Data:- Thermal Conductivity=237Wm°CThickness of aluminium pan(L)=0.6cmDiameter of Aluminium…
Q: A room window measure (3 m²) constructed of glass with overall heat transfer coefficient of (4 W/m?.…
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Q: 18. An aluminum pan whose thermal conductivity is 237 W/m · °C has a flat bottom whose diameter is…
A: The problem is based on heat transfer and can be solved as:
Q: Two metal rods of equal length-one aluminum, the other stainless steel-are connected in parallel…
A: Given The temperature of the ends of the rods is T1=18.0°C and T2=110°C. The diameter of the rod is…
Q: A 6-m-long 2-kW electrical resistance wire is made of 0.2-cm-diameter stainless steel (? = 15.1…
A: (a) Calculate the volume of the cylindrical wire. V=π4d2l Here, V is the volume of the cylindrical…
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- 6. a. The heat flux applied to the walls of the biomass combustion furnace is 20 W/m2. The furnace walls have a thickness of 10 mm and a thermal conductivity of 12 W/m.K. If the wall surface temperature is measured to be 50oC on the left and 30oC on the right, prove that conduction heat transfer occurs at a steady state!b. Heating the iron cylinder on the bottom side is done by placing the iron on the hotplate. This iron has a length of 20 cm. The surface temperature of the hotplate is set at 300oC while the top side of the iron is in contact with the still outside air. To reach the desired hotplate temperature, it takes 5 minutes. Then it takes 15 minutes to measure the temperature of the upper side of the iron cylinder at 300oC. Show 3 proofs that heat transfer occurs transientlyb. Consider a 1000-W iron whose base plate is made of 0.005-m-thick aluminum alloy 195, Cast. The base plate has a surface area of 0.03 m?. Initially, the iron is in thermal equilibrium with the ambient air at 22 °C. Taking the heat transfer coefficient at the surface of the base plate to be 12 w/m²K and assuming 80 percent of the heat generated in the resistance wires is transferred to the plate, i. determine how long it will take for the plate temperature to reach 150 °C. Is it realistic to assume the plate temperature to be uniform at all times? ii. Air 22°C 1000 W ironA piece of chromium steel of length 7.4 cm (density = 8780 kg/m³, K = 50 W/m.K, and Cp = 200 j/kg.K) with mass 1.27 kg, is rolled into a solid cylinder with the same length and heated to a temperature of 600 C and quenched in oi at 36 C. You may take the convective heat rate coefficient between the oil and the cylinder at 280 W/m².K. a) Show that the lumped capacitance system analysis is applicable by calculating the Bi Number b) Find the temperature of the cylinder after 4 min. c) Find the total energy loss during this period. The temperature of the cylinder after 4 min is: The Bi Number is: The total energy loss during this 4 min period is: Choose Choose Choose
- "Consider a heat engine with a piston chamber that has a diameter of 30 mm, a cold reservoir at 285 K and hot reservoir at 350 K. It is also equipped with a metal can cylinder that has a volume of 0.0002 m3. What is the total volume of air in the system if the metal can cylinder is in the hot reservoir and the measured pressure and height of the piston are 103850 Pa and 60 mm, respectively?" O 4.24x10-5 m3 O 4.25x10-2 m3 O 2,42x10-4 m3 O 3.70x10-4 m3Question 2 Steam at 320ºC flows in a stainless steel pipe, whose inner and outer diameters are D₁ = 5 cm and Do 5.5 cm. The pipe is insulated with insulating material - glass fiber (organic bonded) at a thickness of 3 cm. Heat is lost to surroundings at 5°C via convection and radiation with a combined heat transfer coefficient of h₂ = 18 W/m²K. If the heat transfer coefficient inside the pipe is h₁ = 60 W/m²K, determine: a) the heat loss from the steam per unit length of pipe b) temperature drop across the pipe thicknessSpecific Heat Capacities of common substances: Water ()- 4.184- Iron (s) -0.45 L Aluminum (s) -0,89L Mercury () -0.14 Carbon (s) - 0.71 Silver (s) = 0.24 Gold (s) -0.13 Brass (yellow solid alloy) - 0.402 A piece of metal weighing 59.047 g was heated to 100.0°C and then put it into 100.0 mL of water (initially at 23.7°C). The metal and water were allowed to come to an equilibrium temperature, determined to be 27.8°C. Assuming no heat lost to the environment, calculate the specific heat of the metal. (Hint: First calculate the heat absorbed by the water then use this value for "q" to determine the specific heat of the metal in a second calculation.) Compare your result to the above list of substances. What could the metal be?
- P34.9 Two parallel metal plates separated by 1 cm are held at 300, and 298 K, respectively. The space between the plates is filled with N2 (or = 0.430 nm² and Cv, m = 5/2 R). Cv.m Determine the heat flux between the two plates in units of W cm².A tube-launched rocket has stabilizing fins at its rear. During launch the fins experience hot gas at Tg = 1700 oC for a time t = 0.3 seconds. It is important that the fins survive launch without surface melting, T. Given the heat transfer coefficient is h, the heat flux per unit area is q=h(Tg-Ts). What is the objective for this design? High melting point Low thermal conductivity Launching efficiency Low melting pointA slab of iron with temperature, T-48 deg C is used to heat a flat glass plate that has an initial temperature of Tg1=18 deg C. Assuming no heat is lost to the environment, and the masses are m-0.49 kg for the slab and mg= 310 g for the plate, what is the amount of heat transferred when the two have reached equal temperature? Assume c=0.11 kcal/kg-deg C for iron and c=0.20 kcal/kg- deg C for glass.
- At a temperature of 21.4°C the hole in a steel plate has an area of 8.80 x 10- m2. You heat the plate until the area of the hole increases to 8.97 x 10- m2, which allows a steel rod to just slip through this hole. What is the final temperature of the plate? The coefficient of linear expansion of steel is 12 × 10-0/°C.the outer surface is at 350°C, then the design A plane wall has a thermal conductivity of 1.15 W/mK. If the inner surface is at 1100°C and 1.15 W/mK. If the inner surface is at 1100°Cand the outer surface is at 350°C, then the desion thickness (in meter) of the wall to maintain a steady heat flux of 2500 W/m2 should bePosting it second time . Answer all else dont answer - You are using a silver spoon to stir water that just started boiling so that you can achieve a more even heat distribution in your water. The spoon is partially immersed in boiling water and a thermometer in your kitchen reads 27 °C. The handle of the spoon has a cross section of 2mm × 1cm and extends 15 cm in the air from the free surface of the water. The heat transfer coefficient at the exposed surfaces of the spoon handle is 3 W/m2 ×K. Part A : Determine the temperature difference across the exposed surface of the spoon handle. Follow the problem-solving guide on the front page. At the minimum, your analysis should answer the following questions providing detailed justifications:-What are the modes of heat transfer that the spoon is exposed to? -Is this a time dependent or steady state problem? Why or why not?-Is this a 1-D, 2-D or 3-D problem? Why or why not?- What is the thermal conductivity of the material?- The heat…