At On face is insulated and its two ends are imbedded in ice at 0°C.Calculate the rod's tem he rod at a distance x-95cm after 32 seconds ,for thermal diffisuvity k=0.005.
Q: The extent to which the tip condition affects the ther- mal performance of a fin depends on the fin…
A: There are many applications where it is needed to transfer heat from the system to the surroundings.…
Q: The fin shown in Figure, has a base maintained at 300 C and is exposed to the convection environment…
A: Given: k=1 W/mK h=40 W/m2K T∞=20°C Tb=300 To Find: Node temperatures Heat loss
Q: An aluminum fin ( k=200 W/m .o C) 3 mm thickness and 7.5 cm long protrudes from a wall . The base is…
A: Given data: Here, k represents the thermal conductivity, t represents the thickness, L represents…
Q: A steam turbine casing is made of a 6mm thick steel plate. At one location it has an inside surface…
A: Given data: The thickness of steel, LS = 6 mm. Inside surface temperature, Ti = 100°C. Ambient…
Q: The rear window of an automobile is defogged by passing warm air over its inner surface. If the warm…
A:
Q: 20-m pipe has an outside diameter of 50 mm. Pipe is insulated with a layer of asbestos, then…
A:
Q: In the LRT II project, steel railroad rails of 20 meters long are to be installed. If lowest…
A: Due to the temperature difference their is expansion in rail that maximum expansion should be equal…
Q: A heat-conducting rod, that is wrapped in insulation, is constructed with a 0.15-m length of alloy A…
A:
Q: Steel railroad tracks are laid when the temperature is -5.0 °C. A standard section of rail is then…
A:
Q: A current of 200 A is passed through a stainless-steel wire [k=19 W/mK] 3 mm in diameter. The…
A:
Q: Presents the diagram of the problem, necessary formulas, clearance and numerical solution: A metal…
A:
Q: 2A wall is constructed of 2.0 cm of copper, 3.0 mm of asbestos sheet [k = 0.166 W/m.°C], and 6.0 cm…
A:
Q: A long wire of diameter D = 2 mm is submerged in an oil bath of temperature T∞ = 23°C. The wire has…
A: Given Current, I = 180 A Resistance, Re = 0.01 Ω/m Diameter, D = 2 mm…
Q: Q3 - The rear window of an automobile is defogged by passing warm air over its inner surface If the…
A: This question is related to the heat transfer. Shown in the below figure, window glass As we know…
Q: A thermopane window consists of two pieces of glass The window separates room air at 20°C from…
A:
Q: Sheets os aluminum and steel, each 10 mm thick, are placed in contact. What is the temperature of…
A: Given Data T1=212°C T2=56°C Ratio of thermal conductivity of Aluminium and steel is 5
Q: A thick wallet tube of stainless steel (k+10 W/M°C) with 2 cm inside diameter and 4 cm outer…
A:
Q: A wall is constructed of 2.0 cm of copper, 3.0 mm of asbestos sheet [k = 0.166 W/m.°C], and 6.0 cm…
A:
Q: wo heat reservoirs with respective temperatures of 325 and 275 K are brought into contact by an iron…
A: Given Thermal conductivity, k = 79.5 W/m K Temperature, T1 = 325 K…
Q: 4) In a tempering process, glass plate, which is initially at a uniform temperature Ti, is cooled by…
A: (a) At the mid plane of the plate, write the temperature variation. θ0=T0-TsTi-Ts=0.50=C1e-λ12F0In…
Q: The cylindrical head of an engine is 1 m long and has an outside diameter of 50 mm. The temperature…
A: Given data:-Surface temperature of cylinder, Ts=150°CAmbient temperature, T∞=40°CConvective heat…
Q: A cylinder with 15 mm radius, contains an electric resistance heater, is located in an oil of…
A: Given Data: The radius of the cylinder is, r=15 mm=15 mm×m1000 mm=0.015 m. The temperature of…
Q: The engine cylinder of a motorcycle is constructed of aluminum alloy ((T= 400 Kk 186 W/m. K) and is…
A: Given Data : k = 186 W/mK Height H = 0.15 m Outside diameter d = 50 mm radius r = 25 mm Outside…
Q: Consider 469 mm × 447 mm window in an aircraft. For a temperature difference of 98°C from the inner…
A:
Q: A food product with a moisture content of 80% in cans diameter 5 cm to frozen. Mass type of product…
A: given data: initial temperature of product(T1)=-20cmedium temperature(T)=-300cafter 12hour…
Q: As shown in the sketh below, a steam pipe of 0.12-m inside diameter is insulated with a layer of…
A: given; →thermal conductivity of insulating material…
Q: A 10 cm outer diameter pipe carrying saturated steam at a temperature of 195C is lagged to 20 cm…
A: Given Data :- Find :-D1=10 cm mass of…
Q: 1- The rear window of an automobile is defogged by passing warm air over its inner surface with (k =…
A: Given DataT∞i=40T∞o=-10hi=30W/m2Kho=65W/m2Kk=1.4W/m.KL=4mm=0.004m
Q: A cylindrical pipeline that is used for the transport of crude oil is buried in the soil…
A: Given:- h=1.5m d=0.5m t=100mm=0.2m T0=100°C Ts=0°C kg=0.07 W/m.K ke=0.5 W/m.K To find:- Heat loss…
Q: In a steel tube (thermal conductivity λ=52.9 W/mK , internal diameter di=(=0.098-0.006} m, external…
A: GIven: TO calculate temperature at r.
Q: A straight cylindrical fin 0.6 cm in diameter and 6 cm long protrudes from a magnesium block at…
A: Given:d=6 mmL=60 mmTb=300°CT∞=35°Ch=130 W/mKK=180W/m.k
Q: (A) The front window of an truck is defogged by passing warm air over its inner surface. If the warm…
A:
Q: A long solid rod of 20 mm diameter was inserted into a furnace while the other end was projecting…
A:
Q: thick-walled tube of stainless steel [18% Cr, 8% Ni, k = 19 W/m · ◦C] with 2-cm inner diameter (ID)…
A:
Q: The thermal conductivity of a metal plate (20 w/m.k). The and losses. measuring (Imx lm) is plate is…
A: To find: The height of the fin. Given: The thermal conductivity of a metal plate k=20 Wm·K. The…
Q: Ql: Consider a copper ( k= 396 W/m K ) long cylindrical fin 0.25 cm in diameter that protrudes from…
A: Given Data K=396 W/mK D=0.25 cm=0.0025 m T0=95+273=368K Ta=25+273=298K h=10 W/m2K P, Perimeter =…
Q: An electrical heater 100 mm long and 5 mm in diameter is inserted into a hole drilled normal to the…
A:
Q: An electric heater in the form of a horizontal disc 0.192 m in diameter is used to heat the bottom…
A: Given: d=0.192m The temperature of engine oil=5°C The temperature of heater surface=70°C To find:…
Q: Consider the use of straight, stainless steel (304) fin of rectangular profile on a plane wall whose…
A:
Q: An overhead 65-m-long, uninsulated industrial steam pipe of 80 mm diameter is routed through a…
A: Given DataTs=200°CT∞=30°Ch=15W/m2Kε=0.6L=65mD=80mm
Q: 3. A pipe 200 mm outside diameter and 20 m length is covered with a layer, 70 mm thick of insulation…
A:
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: You are designing a PCB laid horizontally on the ground. The PCB surface temperature can’t exceed…
A:
Q: Q3) A sphere of aluminum has a diameter of 5 cm is initially at a temperature of 200 °C is suddenly…
A:
Q: The main body of plenum is a steel vessel of diameter 0.1meters has two semicircle domed ends.…
A: Given data, Diameter, D = 0.1 m Temperature of mixture inside the container, Ti = 250 °C Thickness…
Q: The rear window of an automobile is defogged by passing warm air over its inner surface. If the warm…
A: Find the surface temperature of the glass window.
Q: A researcher tries to apply a 5mm thick cure-on epoxy insulation to an internally-heated spherical…
A: Write the given data with suitable variables. Q=1800 W/m2Ts=200 °C=200+273 K=473 Khair=40 W/m2K
Step by step
Solved in 2 steps with 2 images
- On a hot summer's day concrete highway reach to temperature of 55°C. Suppose that a stream of water is directed on the highway so that the surface temperature is suddenly lowered to 35°C. How long will it take to cool the concrete to.45°C at a depth of 5 cm from the surface?Hi, can you help me with the following problem? A thermally insulated tank of water 2 m x 2 m, depth 1 m is stirred with a paddle for threehours. If the paddle is driven by a motor whose shaft power is 8 kW determine the rate ofchange of temperature in degrees C per hr and the increase in temperature of the water.The specific heat of water is 4200 J/kgC. Identify a system and start your analysis from anappropriate form of the Fist Law of ThermodynamicsA 2m^2 wall of 1010steel is 8 mm thick. If the outside of the wall is100 °C, andyou measure aheat flux of 80 kW/m2coming off the wall, what is the temperature of the insideof thewall?
- J 6 A semi-infinite solid, with a boundary condition of convection on the surface (Tfluid = 100°, h = 220 W/m2-°C) has at t=0s, a uniform temperature of Ti = 0°C, draw the isotherm of 60°C, at time t = 2h. Consider the solid to be cast iron.P3. After a particularly cold night, Alice leaves a tub of water outside. You may consider the ground and air to have temperatures of Te = -10°C and Th = 10°C respectively. How thick is the layer of ice that forms at the bottom of the tub of water, after the tub has been left outside for a long time? The tub of water initially has a layer of water of thickness ho 10 cm. You may assume that the ground and air remain at a constant temperature throughout, and that the side lengths of the tub a, b » ho, i.e. the heat conduction is one- dimensional. Density of ice and water are pice = 920 kg/m³ and pw = 1000 kg/m³. Ice and water have thermal conductivities of kice = 2.22 W K-1 m' -1 and kw 0.556 W K-1 m' -1.The wall of a furnace comprises three layers as shown in the figuie. The first layer is tery (whose maximum allowable temperature is 1400°C) while the second laver is Tracto:y Chose maximum allowable temperature is 1093°C). The third layer is a plate of 6 35 od thermal contact. Steet plare To 6.35x3 45A 1370 C Concerntiation veluciy 37.8 C mass Siynes Figure. Layers in a composite furnace wall. e temperature To on the inside of the refractory is 1370°C, while the temperature T; on the side of the steel plate is 37.8° The heat loss through the furnace HnIlisexpectet tobe
- This question about heat transfer/liquid. A horizontal wire of circular cross section with a diameter of d=1 mm is heated with electric current, and 100W(q'=100W/m) heat energy is given to the wire from 1m length. The wire T∞ = temperature at 20 ° C, large, compared to that in a stagnant water body, locate the outer surface temperature of the wire.The physics of the convection heat transfer of thermosses phenomenon and the mathematical model should be discussed.-3-A piece of copper as shown in figure is initially at 150 C when suddenly immersed in an environment at 38 C. Determine the Biot number and find the piece temperature after 1 minute, a) if the environment is water with h= 50 W/m2 K b) if the environment is air with h= 12 W/m2 K Data: k = 374 W/m K, c, 0.381 kJ/kg K, and p= 8938 kg/m3. Answ(a- Bi=0.0008913 ; T=136.1C b- Bi=0.0002139 ; T=146.5C). 4 cm 4 cm
- Q2/ An aluminum sphere weighting 7kg and initially at a temperature of 533K is suddenly immersed in a fluid at 283K. if heat transfer coefficient between the sphere and fluid is 50W/m?.°C. Take density=2707kg/m3, specific heat=0.9KJ/kg.°C and thermal conductivity= 204W/m °C. إجابت * Determine the Bi number 0.00696 0.000696 0.0052 0.00052 0 أخری *.Determine the time required to cool sphere to 263K 26.28min 262.8min 52.56 min 525.6 min O أخریB- A Blood warming device contains a 20 mm diameter copper pipe is used to carry warm water, the external surface of the pipe is subjected to convective heated transfer coefficient of h 6 W/m² K, find the heat loss by convection per meter length of the pipe when the external °C and surface temperature is 40 the surrounding are at 20 °C.?How much heat is conducted through a sheet of plate glass, k=0.0024 cal/cm2-sec-°C/cm, which is 2.0 meters by 3.0 meters and 5 mm thick, when the temperatures of the surfaces are 20 and -10°C? COMPLETE FBD SOLUTION AND REQUIREMENTS PS. THIS IS A HEAT TRANSFER PROBLEM