Document VJvq02qM2wMeRDp4depVDdkNq

American Society of Heating and Ventilating Engineers Guide, 1930 Table 1. Commercial Standard Fuel Oil Specifications A. Detailed Requirements for Domestic Fuel Oils Grade of Oil Approx. B.t.u. per Gal. Flash Point, Min. Max. Water AND Sediment, Maximum a Pour Point, Maximum Distillation Test Viscosity Maximum No. 1 Light Domestic Fuel Oil A light distillate oil for use in burners requir ing a high grade fuel. 139,000 110F 165F or legal 0.05% 15F 10% point, End point, maximum maximum 420 F 600F No. 2 Medium Domestic Fuel Oil A medium distil late oil for use in burners re quiring a high grade fuel. 141.000 125F 190 F or legal 0.05% 15F 10% point, 90% point, maximum maximum 440F ` 620F No. 3 Heavy Domestic Fuel Oil A distillate fuel oil for use in burners where a low viscosity oil is required. 143.400 150F 200F or legal 0.1% 15F 10% point, 90% point, Saybolt maximum maximum Universal at 100F 460F 675F 55 seconds aLower or higher pour points may be specified whenever required by conditions of storage and use. However, these specifications shall not require' a pour point less than 0 deg. fahr. under any conditions. B. Detailed Requirements for Industrial Fuel Oils Grade of Oil Approx. B.t.u. per Gal. Flash Point, Min. Max. Water and Sediment, Maximum Pour Point, Maximum Viscosity, Maximum No. 4. Light Industrial Fuel Oil An oil known to the trade as a light fuel oil for use in burners where a low vis cosity industrial fuel oil is required. 144,500 150F. See Note b 1.0% See Note c Saybolt Universal at 100F 125 seconds No. 5 Medium Industrial Fuel Oil Same as Federal Specifications Board Specification for Bunker Oil "B" for burners adapted to the use of indus trial fuel oil of medium viscosity. 146,000 150F 1.0% Saybolt Furol at 122F 100 seconds No. 6 Heavy Industrial Fuel Oil Same as Federal Specifications Board 150,000 Specification for Bunker Oil "C" for burners adapted to oil of high viscosity. 150F Water sediment 1.75% . 0.25% Saybolt Furol at 122F 300 seconds bWhenever required, as for example in burners with automatic ignition, a maximum flash point may be specified. However, these specifications shall not require a flash point less than 250 deg. fahr. under any conditions. cpour point may be specified whenever required by conditions of storage and use. However, these specifications shall not require a pour point less than 15 deg. fahr. under any conditions. 232 Chapter 12--Heating by Oil will depend entirely upon the individual installation, but it is reasonable to assume an increase in efficiency of 10 to 15 per cent over coal. The chart (Fig. 2) can be used for estimating the cost per 1,000,000 B.t.u. for various heat contents per gallon (see Fig. 1), and costs per gallon and is based on an overall efficiency of 60 per cent. The cost in 233