How can you find the thermal conductivity of a metal bar in experimentally?
Q: Heat is uniformly generated at the rate of 2 × 10° W/m³ in a wall of thermal conductivity 25 W/m•K…
A: Given Data: q=2×105w/m3 T∞,1=30°c k=25 w/m-k…
Q: A furnace wall 200 mm thick is made of a material having thermal conductivity of 1.45 W/m. K. The…
A: Answer: (a) The rate of heat transfer through the wall is 3213.675 Watt. (b) The temperatures on the…
Q: A
A: Given data
Q: 20 mm diameter copper pipe is used to carry heated water, the external surface of the pipe is…
A: Given data: Diameter of copper pipe, d = 20 mm. Convective heat transfer coefficient of the…
Q: A cubical tank of 2 m sides is constructed of special metal plate 12 mm and contains water at 75°C.…
A: Sides =2 m Thermal conductivity = 48 W/m2.k coefficient of heat transfer of water is 2.5 kW/m2-K…
Q: a) Give the conduction equation for one dimensional and steady state heat transfer in a long solid…
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Q: A wood slab with a thickness of 0.05 m is subjected to a heat flux of 40 W/m4. The left and right…
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Q: A very long 25mm diameter copper k=380W/m.K, rod extends from a surface at 120°C. The temperature of…
A: Given, diameter of the copper rod, d=25mm=0.025m Thermal conductivity of copper, k=380W/m.K…
Q: In a solid sphere of 0.2 m diameter, heat is generated at the rate of 1.2 x 106 W/m3. The center…
A: It is assumed in the above question that the heat is transferred from the outer surface of the…
Q: Consider a thin cylindrical one-dimensional cable with constant thermal properties and constant…
A: Solution: To Derive:
Q: Heat is transferred at the rate of 10 kW at the left end of a metal rod as shown in Figure 7.17.…
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Q: B. Consider a medium in which the heat conduction equation is given in its simplest form as I OT (-…
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Q: Let's assume that the window in the room where you are listening to the Heat Transfer lesson is made…
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Q: calculate the reduction in the heat transfer rate if a 5-cm-insulation battwith thermal conductivity…
A: As heat transfer is given by, Q=-KAdTdxQA=-0.05*dT0.05=-dT
Q: To increase the rate of heat transfer from a device, which has 0.1 m² of exposed surface, you added…
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Q: thermal Gegrd Conductivity Q what dePends ? are the factors on which
A: Thermal conductivity of material is the measure by which we can know how much heat can he co ducted…
Q: A 0.15 m diameter long cylinder is made from a material that can generate heat at the rate of 10…
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Q: A plate having a thickness of 4 mm has an internal heat generation of 200 MW/m³ and a thermal…
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Q: A small stainless-steel rod 7 mm in diameter was heated so it is at 300 °C. It is quenched in a bath…
A: given data d= 7mm Ts = 300°c h= 30 w/m2 k to find time t
Q: Example 1 A 15 mm diameter and 5 m long electric wire is tightly wrapped with 2 mm thick plastic…
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Q: The thermal conductiv
A: given: l=80cm b=50cm t=10mm temperature difference =400 c Q=240W
Q: Temperature distribution of a wall is given as T(x) = -100x + 50 and the cold surface is exposed to…
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Q: The wall of a refrigerated truck consists of 1.5mm sheet steel outer surface, 10mm plywood at the…
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Q: p4x10' Wm heat is produced in a radioactive material with a spherical shape with a diameter of R =…
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Q: Q4- Along hollow copper cylinder has its inner surface maintained at 150-C and is buried in material…
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Q: Consider a 5-m-high, 8-m-long, and 0.22-m-thick wall whose representative cross section is as given…
A: Given: The thermal conductivity of A, kA = kF = 2 W/moC The thermal conductivity of B, kB = 8 W/moC…
Q: A wall (0.5 m x 1.2 m), having thermal conductivity of 1.7 W/m.K. The temperatures at the inner and…
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Q: The dimensions of the coastal-four wooden pillars are 4.13x9.21 cm, and the thermal conductivity is…
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Q: The heat generated in the circuitry on the surface of a silicon chip (k = 130 W/mK) is conducted to…
A: The answer is given below
Q: Choose the right answer 1. The temperature profile for steady hest conduction through a plane wall…
A: “Since you have asked multiple question, we will solve the first question for you. If you want any…
Q: The heat flux applied to the walls of the biomass combustion furnace is 20 W/m2. The furnace walls…
A: Note:As per our guidelines we are supposed to answer only one question. Kindly repost other…
Q: Plate glass 5 mm thick at 200°C is to be cooled from both sides using air at 40°C. If surface cracks…
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Q: A pin fin of 2024-T6 aluminum has a length and diameter of 8.0 cm and 6.0 mm, respectively. The base…
A: Write the length of the fin. L=8 cm=8 cm×1 m100 cm=0.08 m Write the diameter of the fin. D=6…
Q: A completely solid object with k = 3.46 W / (m-K) and circular cross section to transfer heat by…
A: Given, Completely Solid Object with Thermal Conductivity, K = 3.46 W / (m-k) T1 = 600K, T2 = 400K L…
Q: Heat is generated in a homogeneous spherical piece of radioactive material (D -8 cm) at rate of 71.8…
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Q: EXAMPLE Consider a long resistance wire of radius ₁ conductivity kwire =15 W/m °C in which heat is…
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Q: Example 1: The resistance wire of a 1000- W iron is 15 in. Long and has a diameter of D= 0.08 in.…
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Q: Calculate the heat transfer rate when a steel pipe conveying steam is insulated. The pipe has an…
A: GIVEN DATA- The pipe has an inside diameter of 20 cm, and an outside diameter of 30 cm insulation…
Q: Heat is generated in a homogeneous spherical piece of radioactive material (D 8 cm) at rate of 60.8…
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Q: One side of refrigerated cold chamber is 6 m long by 3.7 m high and consists of 168 mm thickness of…
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Q: A metal plate has a surface area of 2 m², thickness 100 mm and a thermal conductivity of 200 W/mK.…
A: Given, Surface area of plate = A = 2 m2 Thickness = l = 100 mm = 0.1 m Thermal conductivity = k =…
Q: In determining the thermal conductivity of a plate flat insulator, the temperature was measured on…
A: “Since you have asked multiple question, we will solve the first question for you. If you want any…
Q: The inner surface of a plane brick wall is at 60°C and the outer surface is at 35°C. Calculate the…
A: Data given - Ti = 60° C To = 35°C ∆x= 220 mm = 0.22 m K = 0.51 W/m°C.
Q: Q2: Write down the one-dimensional transient heat conduction equation for a plane wall with constant…
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Q: 2.19 Consider a 300 mm x 300 mm window in an aircraft. For a temperature difference of 80°C from the…
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Q: A large plate of aluminum 5.0 cm thick and initially at 200◦C is suddenly exposed to the convection…
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Q: The thermal conductivity of a solid material can be determined using asetup similar to the one shown…
A: Thermocouple Location Temperature°C 1 120 2 100 3 85 4 72 Kcopper = 52 W/m.KDpipe = 2.5…
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- Please explain temperature dependence of thermal conductivity including interaction mechanism ?What is(roughness)? what is its effect on heat transfer? Write one or two pages providing schemes or illustration for more demonstration.A perfectly insulated stainless steel (type 304 k = 14.4 W/m K) rod of diameter 0.01 m hasone end held at a temperature of 50oC and the opposite end at 293 K. Calculate the rate ofheat transfer if the rod isa) 20 cm in lengthb) 50 cm in length
- A copper rod has an initial length 5.0 cm and a thermal expansion coefficient of 16 x 106 /K. It is heated from room temperature (22 °C) to a final temperature T, and its final length is 5.0064 cm. What is the final temperature in °C? In your answer, use the relation (L final – Linitial)/Linitial a(Tfinal – Tinitial) where Linitial is the initial length, L final is the final length, Tinitial is the initial temperature, Tfinal is the final temperature, and a is the thermal expansion coefficient. (This question has only one correct answer) a. 133 b. 102 c. 107 d. 141One end of a 40 cm metal rod 2.0 cm2 in cross section is in a steam bath while the other end is embedded in ice. It is observed that 13.3 grams of ice melted in 15 minutes from the heat conducted by the rod. What is the thermal conductivity of the rod. COMPLETE FBD SOLUTION AND REQUIREMENTS PS. THIS IS A HEAT TRANSFER PROBLEMSteels of various grades are often heat treated to achieve particular properties, dependent on application. However, process heating accounts for a considerable amount of all energy use in the manufacturing sector (~35%--insane!). Therefore, it is desirable from a financial standpoint to minimize heat treatment duration while still obtaining the desired properties. Consider a steel (K = 40.0 W/mk, P = 7940 k8 /m3 , Cp = 435J/kg-k) shaft of %D diameter 90 mm which is to be heat treated in a gas-fired furnace. The gases inside the furnace are at a steady T = 1300 K, and the heat transfer coefficient of convection is h = 70 W/m². k. If the shaft is at 310 K when it enters the furnace, estimate how long it must remain in the furnace to obtain a centerline temperature of 700 K, in minutes.
- (a) What is the rate of heat transfer through a wall that is 2 m high by 2.5 m wide?(b) Sketch the temperature distribution.For a specified heat input and a given volume which material will have the smallest tempera- ture rise (Use data book if necessary) (a) steel (b) aluminium (c) water (d) copper. When a hot metal piece is left to cool in air the time rate of cooling of the outer layer will be (a) slower at start and faster near the end (b) faster at start and slower near the end (c) both rates will be the same (d) this will depend on the material. (viii) A thin black plate at temperature T receives radiation from a surface at Temperature T1 and radiates to a surface at T2. If all surfaces are black at steady state (a) (T1 – T) > (T – T2) (b) (T1 – T) < (T – T2) (c) (T1 – T) = (T – T2) (d) can be any one of a, b or c. (ix) The temperature profile (in) a slab initially at a constant temperature and then allowed to cool by convection for a short time will be as shown in Fig : (a) E1.2a (b) E1.2b (c) E1.2c (d) E1.2d. TiOne end of a 40 cm metal rod 2.0 cm2 in cross section is in a steam bath while the other end is embedded in ice. It is observed that 13.3 grams of ice melted in 15 minutes from the heat conducted by the rod. What is the thermal conductivity of the rod.
- Consider the following cases: Case 1: A rod with specified surface temperature. Case 2: A rod with specified surface temperature with heat generation. Case 3: A rod with specified surface temperature with variable thermal conductivity k=k(1+ßT), ß: is constant. The quadratic temperature profile T(r)= f(r ) will be in: Select one: A. Case (1) and Case (2) ONLY B. Case (1), Case (2) and Case (3) C. Case (1) ONLY D. Case (2) ONLY E. Case (3) ONLY F. Case (1) and Case (3) ONLY G. Case (2) and Case (3) ONLYA long rectangular steel bar (10cm x 5 cm) is kept in an environment such that two 10cm faces are maintained at 30 ⁰C, one 5cm face is at 30 ⁰C and other is at 130 ⁰C. The steady state temperature along the center line of the bar is ?plz answer this ASAP,thx One surface of a copper plate that is 3 cm thick has a constant temperature of 400 ° C while the temperature of the other surface is kept constant at 100 ° C. Describe the temperature profile and how much heat is transferred across the plate ?, k copper = 380 watts/m.k with a cross -sectional area of 4 cm².