From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Performance graph and specifications for a Norris Strip type radiator with tinned copper gilled seamed oval tubes.
| Identifier | ExFiles\Box 149a\2\ scan0298 | |
| Date | 23th December 1935 guessed | |
| Norris Strip TUBE TYPE:- TINNED COPPER GILLED SEAMED OVAL TUBES FRONTAL AREA - 1 SQ FT COOLING SURFACE - 23.4 SQ FT FEET RUN TUBING - 66.3 WEIGHT OF TUBING = 4.93 AIR CONSTANT = 1090 CUBIC FT PER MIN WATER CONSTANT = 1.66 FT PER SEC = 14.4 GALLONS PER MIN PER FT WIDTH FORMATION TUBES 1 3/8" x 2 5/16" O/D SECTION SHOWING TUBE 9 m/m PITCH 6 m/m 2 1/4 m/m 1 3/8" Left Y-Axis: PRESSURE (INCHES OF WATER) DROP IN STATIC Right Y-Axis: BRITISH THERMAL UNITS PER HOUR PER SQ. FT COOLING SURFACE PER 1°F TEMP DIFF X-Axis: AIR FLOW - CUBIC FT PER. SQ FT FRONTAL AREA Graph lines and labels: WATER VELOCITY FT. SEC COPPER GILLS IRON GILLS FORD FLAT TUBES HAL & N. AIR RATE TOTAL HOT PRESSURE OLD TYPE R&M AIR PRESSURE COLD ELEMENT TRUNKED FORE AND AFT. | ||