Cylindrical Water cans (diameter 6.5cm and length 15cm) are to be cooled from initial temperature of 20 C by placing theme in a cooler with ambient temperature of 1 C. Compare the initial cooling rates when the cans are laid horizontally to when the cans are laid vertically. Take v=15.55x10 m/s, k=0.024 W/mK and Pr-0.7. Nu = 0.53RA' 1/4 for horizontal orientation Nu = 0.59 Ra for vertical orientation 1/4
Q: An oil of specific gravity 0.8 is flowing through venturimeter having inlet diameter 20 cm and…
A: Given data: SG=0.8d1=20 cmd2=10 cmx=25 cmC=0.98 Need to determine the discharge of oil through the…
Q: 2. Express the internal shear and moment in terms of x and then draw the shear and moment diagrams.…
A:
Q: H.W 1. Express the internal shear and moment in terms of x and then draw the shear and moment…
A: Draw the shear force and bending moment diagram.
Q: State the minimum diameter of glass tube to be immersed in water for which capillary effects are…
A:
Q: There can be more than 1 answer per item What is the purpose of having piston ring gaps? So that…
A:
Q: piston-cylinder, with olume is 4.535 m³ an inal temperature vork done by the stea ntal heat…
A:
Q: A 1.5-m long, copper rod is removed from a heat- treatment oven at 550°C and immersed in a 55°C…
A: Given data Length of copper rod = 1.5 mTemperature of the surface of copper rod = 550 °CTemperature…
Q: on B. Determine the speed of the center G of the tube.
A: To find Speed of the center G of the tube
Q: help please. thank you Based on what you know about correct moisture content for milling (14%),…
A: Moisture content (MC) is defined as the weight of water present in a paddy or rice. Accurate…
Q: (b) An oil with dynamic viscosity of 0.8 Pa. s and specific gravity of 0.9 is flowing through a…
A: It isn't not difficult to track down a great deal of data on the distinctions among dynamic and…
Q: 2. Express the internal shear and moment in terms of x and then draw the shear and moment diagrams.…
A: To find: Shear force and bending moment equations in terms of x To draw shear force diagram and…
Q: Compute the horsepower output of the following described engine operating at 2000 rpm, bore 3.5 in.,…
A: Given: speed, N = 2000 rpm bore, d = 3.5 in stroke, L = 4 in no of cylinders, k = 6 bmep = 140 psi
Q: how does the baulk ringblock the sleeve from engaging with the dog teeth on the gear before…
A: To synchronize the gears, baulk ring synchromesh system is used very widely. The name is derived…
Q: Using enerzy balone for JA madels and Potential eneraies Anscuer the fobbwinz, or d closd sytem chd…
A: Gas molecules in ideal conditions do not attract or repel one another. Ideal gas molecules' only…
Q: 2. Determine the internal normal force, shear force, and bending moment at point C in the beam. 300…
A:
Q: State the minimum diameter of glass tube to be immersed in water for which capillary effects are…
A:
Q: Steam enters a reheat-regenerative turbine at 6 MPa and 400 °C. After partial expansion to 1.2 MPa…
A:
Q: An oscillating water sprinkler is operated at point A on an incline that forms an angle ß with the…
A: Consider the left side part and write the expression of motion in AB-direction and perpendicular to…
Q: 2.) One kilogram of steam is contained in a piston/cylinder device at 800kPa and 200°C. (a) If it…
A: Mass, m= 1 kg P1= 800 kPa T1= 200∘C P2= 150 kPa
Q: For laminar flow in a round pipe of diameter D, at what dis- tance from the centerline is the actual…
A:
Q: Q/ when a mixture of liquid and vapor exists the ratio of the mass of the liquid and vapor mixture…
A:
Q: Q1 (a) Briefly explain the characteristics of a laminar flow.
A: The characteristics of laminar flow are to be discussed. The flow of fluid particles is defined as…
Q: 1. Let A, B, and C be sets. Does A – C = B – C imply A = B? If so, prove it. If not, give a…
A: given; let A,B, and C be sets. does A-C=B-C imply A=B? if so, prove it.if not give a counterexample.
Q: A 26-hp pumps delivers 475 gpm of gasoline ( s.g=0. 68) at 20°C with 78% efficiency. What is the…
A:
Q: Water at 20 °C flows through a horizontal 1-mm-diameter tube to which are attached two pressure taps…
A: Given Diameter, d = 1 mm Length, l = 1 m Find Pressure drop
Q: The shaft is supported by a thrust bearing at A and a journal bearing at B. Determine the x, y, z…
A:
Q: Water flows in a constant diameter pipe with the following conditions measured: At section (a) p. =…
A:
Q: Most of us rode bikes a kid. Did you ever accidentally apply the front brake while riding down a…
A: Given: The inclination of plane, θ = 4° The height of CG of rider, h = 30 in
Q: Water at 20 °C flows through a horizontal 1-mm-diameter tube to which are attached two pressure taps…
A:
Q: QI// A steam turbine equipped with single stage reheating and regenerative feed heating operates…
A:
Q: Water at 20 °C flows through a horizontal 1-mm-diameter tube to which are attached two pressure taps…
A:
Q: wood-stave penstock of 1.8 m diameter is wrapped with steel hoops and subjected to a fluid pressure…
A:
Q: 3. What is the x coordinate of the center of mass for the uniform 21 41. plate shown in the Figure?…
A: For problem 3, the given shape can be taken as a composite of 4 shapes. Consider below diagram for…
Q: Two reservoirs are connected by a pipeline consisting of pipe 1, pipe 2, and pipe 3, with the length…
A:
Q: State the minimum diameter of glass tube to be immersed in water for which capillary effects are…
A: Given information h capillary rise = 2.98 mm, Sigma =0.073N/m, Find dmin?
Q: A rigid body is an object: That rigidly stays in one place because it is immovable under the action…
A:
Q: Complete the questions with How much or How many. children do you have?" "Three. Two boys and a…
A: For countable nous, we use how many For uncountable nouns we use how much.
Q: 18–22. If the 50-lb bucket, C, is released from rest, determine its velocity after it has fallen a…
A: Answer: The velocity of bucket C after it has fallen through a distance of 10 ft is 19.6180 ft/sec.…
Q: Glycerin at 20 °C flows upward in a vertical 75-mm-diameter pipe with a centerline velocity of 1.0…
A: Find the head loss and pressure drop.
Q: (b) An oil with dynamic viscosity of 0.8 Pas and specific gravity of 0.9 is flowing through a…
A:
Q: | 13. Oil of SG = 0.87 and a kinematic viscosity v = 2.2 x 10-4 m2/s flows through the vertical pipe…
A:
Q: 10. A fluid flows through a horizontal 0.1-in.-diameter pipe. When the Reynolds number is 1500, the…
A:
Q: For laminar flow in a round pipe of diameter D, at what dis- tance from the centerline is the actual…
A: Given Diameter = D Average velocity = V Find Distance, r
Q: (b) An oil with dynamic viscosity of 0.8 Pa.s and specific gravity of 0.9 is flowing through a…
A:
Q: A house, for cooling purposes, consists of two zones: the attic area zone A and the living area zone…
A: Solution: Given Data: K1 = 1/4 K2 = 1/8
Q: ext gases. 28 lb/hr. Assuming t n air-fuel ratio of 15 e volumetric efficior Hicion
A:
Q: a) Briefly explain the characteristics of a laminar flow.
A:
Q: 1. The velocity of a car is given by v(f) = 60(1– (0.7)*), where v is measured in m/s and t is…
A:
Q: Solder which contains 95% Tin, 4% Copper, and 0.5% Silver has a melting point at 219 °C. The creep…
A: silver melting point =219°cTm=219+273=492 kfor creep T=0.04TmT⩾0.4×492⩾196.8 kT⩾-76.2°c
Q: Relative analysis in two dimensions and dependent motion: If it is known that the instant shown in…
A: Motion of rigid bodies are not absolute or isolated and therefore it is described with respect to…
Trending now
This is a popular solution!
Step by step
Solved in 3 steps with 3 images
- "You did calculations using the simplified HAZ time-temperature formulas, assuming 3D heat flow, and are presenting your final internship conclusions to management. You realize with horror, in the middle of your presentation, that you forgot to label your calculated curves (below). Which curve is which? Pick the best answer A: "Plot 1 is HYPERFILL® and Plot 2 is p-GMAW. Since HYPERFILL® has the higher heat input, it cools more slowly." B: "Plot 2 is HYPERFILL® and Plot 1 is p-GMAW. Since HYPERFILL® has the faster travel speed of the two processes, it cools faster." C: "Plot 1 is p-GMAW and Plot 2 is HYPERFILL®. Since p-GMAW has the slower travel speed, it cools more slowly." D: "Plot 2 is p-GMAW and Plot 1 is HYPERFILL®. Since p-GMAW has the lower heat input, it cools faster" Both (A) and (D)[wik problem-Two: A Cylindrical stainless steel inget (keys) 15 cm in diameter and 40 cm long passes through a treatment ference that is (6m) in length. The temperature of the furance gu is (1300°C). The inital ingot temperature is (100°C). The Combined het radinat and Convective heat transfercelli- -cient is (100 tk). Calculate the maximum speed with which the ingot should pass through the furnace if it must attain a temperature of (850 °C). Take (α=0.46×105 (Aust Velocitga 1.985 mm/3) -52-D: A fin may be manufactured as an integral part of a surface by using a casting or extrusion process, or it may be separately brazed or adhered to the surface. From thermal considerations, which option is preferred? 2-E: What is the difference between steady-state and transient heat transfer processes? Give an example for each of them. 2-F: What is the physical interpretation of the Biot number? 2-G: For flow over a flat plate, sketch variation of local convective heat transfer coefficient, h(x), versus the distance along the plate x for laminar, transition, and turbulent flow regimes.
- molten salt at 920 K. Data for molten salt: 10 K¹: (920 K) 1.65 x 10³ N s m². 8.20 A steel rod (25 mm diameter and 0.6 m length) is heated vertically in a large bath of Calculate the heat transfer coefficient when the bar is at 640 K. = 870 J kg K¹; p = 3200 kg m³; ß = 2 x k = 86 W m¹ K¹; C, : 1.03 x 10³ N s m²; n(780 K) = 1.24 x 10³ N s m²; n(640 K) =16. A 12 cm diameter long bar initially at a uniform temperature of 40°C is placed in a medium at 650°C with a convective co efficient of 22 W/m’K calculate the time required for the bar to reach255°C. Take k = 20W/mK, p = 580 kg/m' and e= 1050 J/kg K. Given : Unsteady state D = 12 cm = 0.12 m R = 0.06 m T. = 40 + 273 =- 313 K T = 650 + 273 = 923 K T= 255 + 273 =528 K h= 22 W/m°K k= 20 W/mK p= 580 Kg/m? c = 1050 J/kg K Find: Time required to reach 255°C (t)QUESTION 2 A stainless steel sphere AISI 316 (k = 18.3 W/m.°C, C, = 550 J/kg.°C and p = 8238 kg/m) is initially u %3D The sphere is suddenly placed in a controlled temperature water bath (k = 0.6 W/m.°C, C, = 4187 J/kg. with h = 146 W/m2.°C. If the characteristic length for the sphere Lc = 0.05, then Bi # is around !3! %3D !! %3D O 12.17 O None of the options. O 0.4 O 0.006 O 0.08
- Given a plaster of paris (PoP) slab with L = 0.052 cm, W = 0.052 cm, and H = 0.0095 cm, what is the heat transfer coefficient if the biot number is 0.19682? Attached is the Heisler Chart below. Other data (if necessary):Initial Temperature: 328.2 CSurrounding Temperature: 27.9 CPoP Density: 680 kg/m^3Heat Capacity: 1090 J/kgKThermal Conductivity: 0.1185 W/mK(B) Cylindrical Water cans (diameter 6.5cm and length 15cm) are to be cooled from initial temperature of 20°C by placing theme in a cooler with ambient temperature of 1°C. Compare the initial cooling rates when the cans are laid horizontally to when the cans are laid vertically. Take v = 15.55x10° m²/s, k=0.024 W/mK and Pr=0.7. Nu = 0.53RA' a4 for horizontal orientation Nu = 0.59 Ra"4 for vertical orientationc) A steel pipe of 100 mm bore, and 10 mm bore thickness, carrying dry saturated steam at 28 bars, is insulated with a 40 mm layer of moulded insulation. This insulation in turn is insulated with a 60 mm layer of felt. The atmospheric temperature is 15 °C. Calculate: (i) the rate of heat loss by the steam per metre pipe length. (ii) the temperature of the outside Dimensions in mm surface.zzzzzzz h₂-15 W/m²K Steel k₁=50 W/mK AVALEHT Ø100 1₂ " Steam 28 bar h-550 W/m²K, Inner heat transfer coefficient = 550 W/m² K Outer heat transfer coefficient = 15 W/m² K Thermal conductivity of steel = 50 W/m K Thermal conductivity of felt = 0.07 W/m K Moulded insulation Felt Moulded insulation K₂=0.09 W/mK Thermal conductivity of moulded insulation = 0.09 W/m 40 10. A 60 15°C Felt K₁=0.07 W/mK zzzzzzzz
- O heat \-140°C source Civen: composite wall (3 layers) Pory unethane board corere te rock (15 cm, wool k>0.762 (0.5 cm , (0.38cm, WIm2 K k= 0.0397 w [m" K Tconue te 0.03 92 m²K 32°C Cxposed to air and heat soure Emirr ivity %3D -0.90 Sowe: 1. given conyeetiye heat trans fer 8,23 (w /m k), coeficint oo nside air %3D diefermine temperature in side aiv at end of com posite wall heard transfer 2. Sue thermal radiation to (negleck natual Convection) 3. using heat transfer from # 2, in SONE mtergace temperature, temperant ure innermost wallA fuel rod of a PWR consists of about 320 solid fuel pellets inside a zircaloy cladding. Use the specified data to plot the distribution of temperature in the fuel rod. The temperature distribution should include the fuel region, the gap region, the cladding region, and end at the bulk coolant for two cases of low and high lin- ear heat generation rates. Data: DFuel = 0.96 cm, Dinside Clad = 0.985 cm, Doutside Clad = 1.12 cm, kFuel = 1.73 W/m C, kClad = 5.2 W/m-C, TWater = 300 C, ģLow = 5 kW/ft %3D %3D (164 W/cm), and d'High = 15 kW/ft (492 W/em). The heat transfer coefficient %3D from the fuel rod to bulk coolant is 34 kW/m²-C. The heat transfer coefficient in the gap region is 5.7 kW/m-C for the low and is 11.4 kW/m².C for the high linear heat generation rate.A fuel rod of a PWR consists of about 320 solid fuel pellets inside a zircaloy cladding. Use the specified data to plot the distribution of temperature in the fuel rod. The temperature distribution should include the fuel region, the gap region, the cladding region, and end at the bulk coolant for two cases of low and high lin- ear heat generation rates. Data: DFuel = 0.96 cm, Dinside Clad = 0.985 cm, Doutside Clad = 1.12 cm, kFuel = 1.73 W/m C, kclad = 5.2 W/m-C, Twater = 300 C, ģ1ow = 5 kW/ft %3D (164 W/cm), and d'High = 15 kW/ft (492 W/cm). The heat transfer coefficient from the fuel rod to bulk coolant is 34 kW/m².C. The heat transfer coefficient in the gap region is 5.7 kW/m2.C for the low and is 11.4 kW/m2-C for the high linear heat generation rate.