Table 6: Heat fluxes for the perlite insulation configuration depending on the external surface properties.

Material (absorptivity, emissivity, and reflectivity)Polish stainless steelStripped stainless steelGalvanized steelWhite painted steelBlack paintedBlack laquerDark grey paintDark blue paintedSilver paintedWhite laquerAluminium paintShiny white paint Minimum heat flux (W)
Environmental temperature (°C) Solar radiation (W/m2) Wind velocity (km/h)0.30.520.620.230.950.920.910.910.250.210.40.21
0.70.480.380.770.050.080.090.090.750.790.60.79
   0.330.270.190.770.970.890.860.750.670.20.50.87

00298.74269.60274.38247.03240.15242.80243.82247.77250.85273.76258.04243.48240.15
0100289.30286.60287.12283.54282.35282.82283.00283.65284.14287.06285.17282.94282.35
0200288.92287.37287.67285.58284.87285.15285.26285.65285.93287.63286.54285.22284.87
5000308.31290.15299.91254.53268.48270.90271.88276.81259.91282.43272.27250.12250.12
500100290.44288.57289.48284.38285.80286.18286.33287.00285.13287.85286.67283.71283.71
500200289.53288.50289.02286.07286.89287.11287.20287.59286.51288.09287.40285.67285.67
10000319.07310.19324.82261.88294.60296.91297.89303.81268.80291.02286.12256.65256.65
1000100291.51290.54291.83285.23289.25289.53289.65290.34286.13288.65288.16284.48284.48
1000200290.21289.63290.37286.56288.90289.06289.13289.53287.09288.55288.26286.12286.12
000314.39282.78288.17257.84250.35253.22254.34258.65262.01287.47269.91253.96250.35
00100305.17302.09302.68298.55297.19297.73297.93298.68299.24302.61300.43297.86297.19
00200304.85302.97303.32300.90300.09300.41300.53300.98301.31303.27302.01300.49300.09
05000325.02303.01313.37265.13277.88280.55281.63286.92270.85296.03283.83260.43260.43
0500100306.35304.05305.03299.39300.62301.07301.24302.01300.23303.40301.92298.63298.63
0500200305.40304.10304.66301.38302.09302.36302.46302.91301.88303.73302.87300.93300.93
010000335.56322.71337.94272.29303.28305.86306.94313.22279.51304.50297.37266.78266.78
01000100307.45306.01307.39300.23304.04304.40304.54305.34301.22304.20303.41299.39299.39
01000200306.03305.23306.01301.87304.10304.30304.39304.85302.46304.19303.73301.38301.38
2000348.80308.52315.22278.59269.89273.22274.51279.54283.49314.35292.88274.08269.89
200100337.07332.95333.73328.33326.58327.27327.53328.51329.23333.64330.78327.45326.58
200200336.48334.17334.57331.38330.32330.75330.90331.49331.92334.51332.84330.85330.32
205000358.87328.10339.74285.51295.90299.06300.34306.35291.89322.67306.18280.19280.19
20500100338.16334.91336.08329.16329.96330.57330.80331.80330.21334.43332.26328.20328.20
20500200336.56335.24335.91331.87332.31332.68332.82333.41332.49334.97333.70331.29331.29
2010000368.60347.07363.61292.29319.95323.04324.33331.32300.12330.91319.11286.20286.20
201000100339.34336.86338.43329.99333.33333.85334.06335.09331.19335.22333.73328.95328.95
201000200337.74336.36337.26332.36334.30334.61334.73335.34333.07335.42334.55331.73331.73
5000401.04345.60354.42307.72297.19301.20302.77308.88313.72353.25325.41302.24297.19
500100385.09378.90380.12372.34369.86370.84371.21372.59373.61379.98375.84371.09369.86
500200384.18380.67381.33376.70375.18375.78376.01376.85377.47381.25378.81375.93375.18
505000410.19364.10377.89314.11321.14325.03326.59333.67321.50361.21337.81307.87307.87
50500100386.20380.93382.45373.15373.16374.06374.41375.82374.58380.77377.30371.82371.82
50500200384.82381.79382.67377.18377.14377.69377.90378.76378.04381.70379.66376.37376.37
5010000419.09382.07400.69320.38343.36347.20348.78356.81329.13369.08349.87313.41313.41
501000100387.31382.86384.79373.97376.46377.28377.60379.05375.55381.56378.76372.56372.56
501000200385.46382.91384.01377.66379.10379.59379.79380.66378.61382.16380.51376.81376.81