A thick wallet tube of stainless steel (k+10 W/M°C) with 2 cm inside diameter and 4 cm outer diameter is covered with a 3 cm layers of asbestos insulation (K= 0.2 W/M°C), if the inside wall temperature of the pipe is maintained at 600 degree C , Calculate the heat loss per meter of length, Also calculate the tube - insulation interface temperature. Draw the Coresponding diagram. Ambient temperature is 2°C.

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A steel pipe (outside diameter 100 mm) is covered with two layers of insulation. The inside layer, 40 mm thick, has a thermal conductivity of 0.07 W/(m K). The outside layer, 20 mm thick, has a thermal conductivity of 0.15 W/(m K). The pipe is used to convey steam at a pressure of 600 kPa. The outside temperature of insulation is 24°C. If the pipe is 10 m long, determine the following, assuming the resistance to conductive heat transfer in steel pipe and convective resistance on the steam side are negligible: a. The heat loss per hour. b. The interface temperature of insulation.

QUESTION 3 A steel pipe 150mm external diameter conveys steam at a temperature of 260°C and is covered by two layers of lagging, each 50mm thick. The thermal conductivity coefficient of the inside layer of lagging is 0.0865W/mK while that of the outside layer is 0.0952W/mK. The outside surface temperature of the steel pipe can be taken as being the same temperature of the steam. The ambient temperature is 27°C and the heat transfer coefficient of the outside surface is 15W/m2K. Calculate: 3.1 the heat lost/hr for a pipe length of 30m;

A thick walled tube of stainless steel (k = 19 W/m.C) with inner diameter 20 mm and 40 mm outer diameter is covered with a 30 mm layer of asbestos insulation (k = 0.2 W/m.C). If the inside wall temperature of the pipe is maintained at 600 C and the outside insulation is 1000 C, calculate the heat loss per meter of length.

The oven of a stove must have a sufficient insulation so that the surface temperature of the stove is not greater than 50 C, To accomplish this, insulation, k = 0.11 W/m-K, is used between the inside and outside metal surfaces. The room temperature is 20 °C, and the outside unit convective coefficient is 8 W/m2-K. Neglecting the resistance of the metal, what is the minimum thickness of insulation required, if the outside temperature reaches 315 c?

A spherical container holding a hot fluid at 500 K and having an outer diameter of 0.5 m is insulated with three layers of each (50) mm thick insulation of k1 = 0.01 W/mK, k2 = 0.05 W/mK and k3 = 0.1 W/m K. The outside surface temperature is 30 °C. Draw the figure. Determine (i) the heat loss, and (ii) Interface temperatures of insulating layers.

Yes it is  hard but please I need help with this A horizontal 8 cm OD pipe carries steam at 150°C through a room at 17°C. The pipe is covered by a1.5 cm layer of magnesia insulation. What is the heat loss per meter of the pipe?• For this configuration if a horizontal cylinder, NuD = f (RaD, Pr) can be found using equation 8.28• I assume since material and thickness of the pipe inside the insulation are not given, nor is any flow data onthe steam that these resistances are negligible.• The temperature of the outer insulation is not initially known. I guessed it and used a circuit diagram with tworesistances to find Q, then used one circuit to find the wall temp, and iterated. I updated my material propertieswith my wall temperature changes. It converged quickly.• My answer is 5-10% higher than the books. Not sure why.

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QUESTION 2 The wall of a refrigerated truck consists of 1.5mm sheet steel outer surface, 10mm plywood at the inner surface and 20mm of glass wool in between. The inside temperature is -15°C and outside temperature is 24°C. Take the thermal conductivities of the materials as follows: - =0,052W/mK = 23,2W/mK k for glass-wool = 0,14W/mK k for plywood k for steel %3D Calculate: 2.1. the rate of heat flow per unit area; 2.2. the interface temperature. If the glass-wool is replaced by a 5mm cork board with a thermal conductivity of 0.043W/mK; 2.3. What percentage change in heat flow is obtained? 2.4. What must be the thickness of the cork board be, to achieve the same heat flow as in (2.1.).