A resistor provide energy to a metal block 20 cm wide with a conductivity of 120 W/m.k. The temperature on the metal block near the resistor side is 70 oC. The heat travel to the other side of the block. On the other side, air is cooling the metal block. The convective heat transfer coefficient for air is 300 W/m2.k. Calculate the energy of the resistor in KW/m2 such that the air temperature near other side of the block is 0oC.

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

A:

Q: A large plane wall has a thickness of L=14 cm and thermal conductivity of k=167 W/(m°C). The left…

A:

Q: A container used to store ice is made of wood 5.0 cm thick and has an effective area of 12,000 cm2…

A:

Q: A family enters a winter vacation cabin has been unheated for such a long time the interior…

A: Given Data: Heater rating, P=2 kW

Q: In a thermal power plant, a horizontal copper pipe of "D" diameter, "L" length and thickness 0.6 cm…

A:

Q: Q2. An Aluminum cube 5cm side length (rho=2700,C=0.896 KJ/Kg.C and k-204 (W/m. C) initially at 20 C,…

A:

Q: 2. A rectangular swimming pool is 1.5 m deep, 15 m wide, and 25 m long. Assume the bottom and sides…

A:

Q: Q2) The outer surfaces of the plane composite wall (A, B and C) are exposed to a fluid at 25°C and a…

A:

Q: A wall of length "L" m and height "H" m is made from a thick bricklayer of 31 cm with thermal…

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

Q: Two coaxial spheres with diameters of 15 cm and 25 cm were separated by air at 1 atm pressure. two…

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: A family enters a winter vacation cabin has been unheated for such a long time the interior…

A: Given data: Ti=0°CTf=24°CP=2 kW Need to determine the time taken to reach the temperature of the…

Q: The wall of a storage system contents of a 10cm layer of common brick (k=0.69w/m. °C) and a 2.5cm…

A:

Q: Air treated as an ideal gas and having a specific heat at constant volume Cv=1200 J/kg.K undergoes a…

A:

Q: A room is 3600 mm in height. It has wall length and width of 5 meters and 6 meters, respectively.…

A: Given   Height, h = 3600 mm Length, L = 5 m Temperature, T1 = 25oC                      T2 = 18oC…

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: An electric fan has the motor inside a sphere of 25 cm diameter, which gives a uniformly distributed…

A: Given: Heat generation from the sphere is 2500 W/m3. Diameter of the sphere is  25 cm. Dimension of…

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

A:

Q: A sphere ( k=204 W/m K) with inner diameter 4 cm and outer diameter of 8 cm. The inside temperature…

A: Given data  Thermal conductivity of sphere (k) = 204 W/mK Inner diameter (d) = 4 cm = 0.04 m outer…

Q: Consider the rate of heat conduction through a double-paned window that has a 1.4-m2 area and is…

A:

Q: Consider a wall consisting of two layers, A and B, with the following properties: = 1.5 W/m.K; LA =…

A:

Q: Consider a pipe with an inner radius of 15 cm, an outer radius of 20 cm, and k = 15 W / m ∙ oC. The…

A:

Q: The north wall of a cold storage warehouse is 4 m by 18 m and is constructed of 150 mm hollow clay…

A:

Q: Too. h Qconv A, E W₂ Qrad An electric heater is located in a room with air temperature of 20°C and…

A: Find we_max to limit the surface temperature.

Q: In a thermal power plant, a vertical copper pipe of "D" diameter, "H" height and thickness 1 cm…

A:

Q: store ice is made of wood 5.0 cm thick and has an effective area of 12,000 cm2 and thermal…

A: given x=5cm A=12000cm2 K=0.00027 cal/cm2-sec-°C/cm time t=24 hour  T out=25 oC T in=5 oC

Q: The rate of heat conduction through a plane wall is proportional to the average thermal…

A: The rate of heat conduction through a plane wall is proportional to the average thermal…

Q: A student is standing inside a large classroom with temperature controlled at 20°C. For a heat…

A:

Q: Determine if it is steady heat transfer or one dimensional heat transfer.   Heat transfer in a hot…

A: In this problem, it is asking that heat transfer in a hot egg placed into a refrigerator where…

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

A: Given data: T1=70°CT∞=0°Ch=300 W/m2Kt=20 cm Need to determine the energy of the resistor per square…

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

A:

Q: 2. Show that 1 kJ/kg = 1000 m²/s² 3. How thermal conductivity can be measured experimentally?…

A: Given data: The energy per kg is E = 1 kJ/kg. Here, to convert 1 kJ/kg in 1000 m2/s2 some…

Q: A solar system operates under the following conditions: Solar radiation 1100 W/m2, Specific…

A: In this problem, we will calculate the volume of flow of this solar system by first calculating the…

Q: Find the heat loss from the fin

A: Given data; The heat loss from a fin is=6 W Effectiveness= 3 Efficiency= 0.75

Q: 5. A small oven is located in a room in which the walls and the air are at a temperature of (25 +…

A:

Q: A long rod with a diameter of 2 cm is welded to the outer wall of the boiler and extends out. The…

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.