The heat flux applied to the walls of the biomass combustion furnace is 20 W/m2. The furnace walls have a thickness of 10 mm and a thermal conductivity of 12 W/m.K. If the wall surface temperature is measured to be 50oC on the left and 30oC on the right, prove that conduction heat transfer occurs at a steady state!

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QUESTION 7 A large slab 1.0 m thick is poured rapidly. The hydration process in the concrete (k=0.84 W/mK) produces an intenal heat generation at a constant rate of 100 W/m3. If the surface temperature of both sides of the slab is 16°C, determine the maximum temperature in the slab. O a. 16 °C O b. 27 °C OC. 37 °C O d. 47 °C O e. 17 °C O f. None of them

Stainless steel type 304 [k = 16.3 W/m-K] from heat treatment was brought to a room @ 27C. It is in cube form and has an edge of side 20cm. Initially, the temp. of the steel from the heat treatment is 500C. The total effective heat transfer coefficient is 18 W/m2-K. How long will it take for the surface of the cube to be within 28 C of the room temp.?

Good Day, Kindly help me with this problem, Thank you P.S. T= 30 degrees

A) Answer the question shown in the image

In a glass plant in Cavite, a furnace has fire-brick walls made up of the following two materials in series :                        Non-corrosive brick as inner layer (material 1) Clay brick as outer layer (material 2) Thickness 4.5 inches 8 inches Thermal conductivity k1 k2   The temperature inside the furnace (inside wall surface of the non-corrosive brick) is found to be 1105 oF while the outside temperature (outside wall surface of clay brick) is 365 oF.   This is not the desired temperature inside the furnace so engineers thought of lagging the furnace walls with another material to reduce heat loss.  The additional lagging material consists of magnesia layer which is 2 inches thick and has a thermal conductivity of 0.04 Btu /h.ft.oF.   During a test run on the furnace with the magnesia lagging material now,  new temperature readings were recorded : Point of measurement Temperature reading Inside furnace (inside wall surface of non-corrosive brick      1355 oF Interface between…

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I am struggling with this question. Part a and b

a. The wall of a building has a surface area of 50 m2. The outside layer of the wall is 20 cm thick concrete with thermal conductivity kcon = .8 W/m-K. The inner layer is 10 cm thick balsa wood (kbalsa = .048 W/m-K) as an insulator. Outside temperatures of 47o C are expected, while an inside temperature of 21o C is maintained by the cooling system. Find the rate of heat transfer through the wall.