Chemistry

Chemistry, 13.09.2019 23:30, raizagisselle1694

Determination of thermal conductivity. in determining the thermal conductivity of an insulating material, the temperatures were measured on both sides of a flat slab of 25 mm of the material and were 318.4 and 303.2 k. the heat flux was measured as 35.1 w/m^2. calculate the thermal conductivity in btu/hftfahrenheit and in w/m*kelvins

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Physics, 09.09.2019 19:10, mimithurmond03

Determination of thermal conductivity. in determining the thermal conductivity of an insulating material, the temperatures were measured on both sides of a flat slab of 25 mm of the material and were 318.4 and 303.2 k. the heat flux was measured as 35.1 w/m2. calculate the thermal conductivity in btu/h-ft-ºf and in w/m-k q = 35.1 w/m 2 t 1 = 318.4 k t 2 = 303.2 k 25 mm

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Chemistry, 24.09.2019 19:30, ashtonrieper2721

The thermal conductivity, k, of a substance is an important physical property in heat transfer. the higher the thermal conductivity, the more quickly energy may be transferred through conduction. the thermal conductivity of aluminum is 240 w/m/k. under the same conditions the thermal conductivity of stainless steel is 14 btu/hr/ft/f. convert to either unit set to directly compare your results and determine which material has a higher thermal conductivity. how does this result compare to your expectations?

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Engineering, 05.10.2019 13:30, omarabady

Acomposite wall consists of a 10-cm-thick layer of building brick of thermal conductivity k = 0.7 w/(m • °c) and 3-cm-thick plaster of thermal conductivity k = 0.5 w/(m • °c). an insulating material of thermal conductivity k = 0.08 is to be added to reduce the heat transfer through the wall by 70 percent. determine the thickness of the insulating layer.

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