insulator has a thermal conductivity of 20 W/m ºC s used to separate two heat sinks whose temperature are 600 ºC and 300 ºC, respectively. What is the minimum insulator thickness to separate these two heat sinks when the maximum heat flux between them is 250 W/m2 ?

Q: The temperature gradient in a slab at steady conduction is - l000°C/m. The slab conducts heat at 250…

A:

Q: A long, thin copper rod 5 mm in diameter is exposed to an environment at 20°C. The base temperature…

A:

Q: Consider a large plate of electrically resistive material that has a thickness of L=20 cm and themal…

A:

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: a flat wall is covered with a layer of insulation 1.0 in. thick whose thermal conductivity is 0.8…

A:

Q: Q2: A hot surface at 150°C is to be cooled by attaching 4- cm-long, 0.3-cm-diameter aluminum pin…

A:

Q: Q2) A plate having a thickness of 4.0 mm has an internal heat generation of 100MW/m³ and a thermal…

A:

Q: A roof has 2 types of insulating material placed inside it. The materials are 10 cm insulating foam…

A: Given: Length of the insulated foam→L=10 Cm=0.10 m And length of another material is same as another…

Q: Calculate the heat transfer in kJ per hour through a solid brick wall 8 cm, 3 m high and 225 mm…

A: Given: The outer surface temperature is Tc=5°C. The inner surface temperature is Th=17°C. The…

Q: A large concrete wall is 300 mm thick and has a thermal conductivity of 1.2 W/m C. The heat flux…

A:

Q: A resistor provide energy to a metal block 20 cm wide with a conductivity of 120 W/m.k. The…

A:

Q: 2. A 15 cm diameter aluminum ball is to be heated from 80°C to an average temperature of 200°C.…

A:

Q: The inner and outer surfaces of a cyl nd

A: K = 2 W / mk    r1= 1 cm , t1 = 300 degree    r2 = 2 cm , T2 = 100 degree    The diagram has been…

Q: A metal furnace with a 1.25 m x 0.75 m metal door is placed in a room and set to 400K. A 0.3 m x 0.3…

A: Given: Temperature of the furnace→T1=400 K size of the metal door→A1=1.25×0.75=0.93 m2 Size of the…

Q: A large plane wall has a thickness of L=14 cm and thermal conductivity of k=191 W/(m°C). The left…

A:

Q: Q2: A hot surface at 150°C is to be cooled by attaching 4- cm-long, 0.3-cm-diameter aluminum pin…

A:

Q: A thin, flat electric heater is exposed to air on both sides. On the top is a heat transfer…

A: To find: The temperature of the heater. Given: The heat transfer coefficient of top is hT=20 W/m2K…

Q: The rate of heat generation per unit volume in a hollow cylinder of inner radius 100 mm, outer…

A:

Q: The heat flux across a certain conductor is found to be 288 W m2. The temperature drop along the…

A: To find: The thermal conductivity of material. Given: The heat flux is q=288 Wm2. The temperature…

Q: Consider a plate whose thickness is 2L=16 cm and thermal conductivity is 50 W/mK. Heat generation…

A: Given : The thickness of the plate, 2L= 16 cm The thermal conductivity of plate = 50 W/mK The…

Q: A large plate of 0.5 m thickness and constant thermal conductivity of k=60 W/m K in which heat is…

A: GIVEN: Thickness- 0.5 m thermal conductivity (k)=60 w/m·/K Heat generation (Qg)=2 kW/cm2 ambient…

Q: A wall of length "L" m and height "H" m is made from a thick bricklayer of 38 cm with thermal…

A:

Q: Consider a solid sphere of radius r=50 cm. The heat is generated steadily inside the sphere at a…

A: Given Data⇒ Radius of the solid sphere (r)=50 cm Heat generation rate is q=15000Wm3 Conductivity of…

Q: The 2 m × 1.5 m area of ​​the wall of an industrial furnace burning natural gas is not insulated and…

A:

Q: A stainless steel alloy has cylindrical shape (k = 25 W/m.oC), diameter is 10 cm and 25 cm long,…

A:

Q: A circular profile fin 2.3 cm in diameter and 20 cm in length is constructed of aluminum (k=20 W/m…

A: give d=2.3mm            L=20mm           K=20 w/m°cT0=900c              T∞=20°c           h=12…

Q: A large plate of 0.5 m thickness and constant thermal conductivity of k=60 W/m-K in which heat is…

A: Given Data Thickness of plate is : L=0.5 m Thermal conductivity constant is : k=60 W/m·K Heat…

Q: The brick wall of a house measures 4 x 7 m and has a thickness of 0.3 m. The thermal conductivity of…

A: given data as per question Dimensions of the brick wall = 4m×7m Thickness of the wall  = 0.3 m…

Q: The internal side of a wall is kept at 100o C and its external side which is exposed to the…

A: T1=100o CT2=10o Ch=10 W/m2 oCK=1.3 W/m oCt=0.4 m

Q: 0/1 The thermal conductivity of Aluminum material at127°Cand 527°C are 240 and 218 W/m. K,…

A: Hello. Since you have posted multiple questions and not specified which question needs to be solved,…

Q: What happens to heat transfer per unit time in conduction heat transfer as thermal conductivity

A:

Q: A liquid food is being pumped in a 1 cm thick steel pipe. The inside diameter of the pipe is 5 cm.…

A: “Since you have posted a question with multiple subparts, we will solve first three sub parts for…

Q: ayer at a rate of 1.1 x 104 W/m2. The room temperature is 27 °C. (a) Determine the thermal…

A:

Q: A rectangular glass window pane on a house has a width of 1.4 m, a height of 2.2 m, and a thickness…

A: Given:The width of the window is the height of the window is the thickness of the window is the…

Q: A resistor provide 20Kw/m2 to a metal block 10 cm wide with a conductivity of 80 W/m.k. The…

A: Draw the Schematic diagram for the above problem.

Q: A steel plate 30 mm thick with a thermal conductivity k = 50 W/m K has a heat transfer rate of 125…

A:

Q: With a linear profile inside the brick wall of thermal conductivity of 0.71 W/(mk), determine the…

A:

Q: A large plane wall has a thickness of 0.4 m, thermal conductivity k= 2.3 W/m. °C, and surface area…

A: Given:Thickness, t=0.4 mK=2.3 W/m°CA=30 m2Left side wall temperature, TL=90°CT∞=25°Ch=24 W/m2°C

Q: You are pouring a concrete pad 0.1 m thick. The curing of concrete is an exothermic chemical…

A:

Q: A large plate of 0.5 m thickness and constant thermal conductivity of k=60 W/m⋅K in which heat is…

A:

Conduction and Convection

When energy travels from one object to another it is said to have undergone heat transfer. Heat transfer is nothing but the transfer of thermal energy or internal energy from one thing to another, like e.g., when a vessel with water, kept on top of a burner, heats up because of the flame underneath it.