Heating Load Required To Heat Oil Amount of Oil Temperature Rise Cubic Ft.     Gallons    Litres    50°F  100°F  200°F  300°F  400°F  500°F 10°C 37.8°C 93°C 149°C 204°C 260°C  Kilowatts to heat in one hour 0.5 3.74 14.16 0.3 0.5 1 2 2 3 1 7.48 28.32 0.5 1 2 3 4 6 2 14.96 56.64 1 1 2 4 6 11 3 22.44 84.96 2 3 6 9 12 16 4 29.92 113.28 2 4 8 12 16 22 5 37.41 141.60 3 4 9 15 20 25 10 74.81 283.20 5 9 18 29 40 52 15 112.22 424.80 7 14 28 44 60 77 20 149.62 566.40 9 18 37 58 80 102 25 187.03 708.00 11 22 46 72 100 127 30 224.43 849.60 13 27 56 86 120 151 35 261.84 991.20 16 31 65 100 139 176 40 299.24 1132.80 18 36 74 115 158 201 45 336.65 1274.40 20 40 84 129 178 226 50 374.05 1416.00 22 45 93 144 197 252 55 411.46 1557.60 25 49 102 158 217 276 60 448.86 1699.20 27 54 112 172 236 302 65 486.27 1840.80 29 58 121 186 255 326 70 523.67 1982.40 32 62 130 200 275 350 75 561.08 2124.00 34 67 140 215 294 375