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 chart for a Vauxhall 14 HP radiator, showing horsepower dissipated and air pressure against air flow.
| Identifier | ExFiles\Box 149a\2\ scan0276 | |
| Date | 6th November 1935 guessed | |
| CHART No. L | 592 B VAUXHALL 14 H.P. RADIATOR FRONTAL AREA = 1.6 sq. ft. COOLING SURFACE = 28.5 sq. ft. FT. RUN TUBING = WT. OF TUBING = LBS WATER VELOCITY = FT. SECOND AIR INLET 60 °F WATER MEAN 160 °F TUBE TYPE DEPTH OF BLOCK = 2 3/32" COPPER USED FOR CONSTRUCTION OF WATER PASSAGES & JOINING STRIP ALL EXPOSED SURFACES TINNED WIDTH OF WATER PASSAGE = 1 1/4" 12.5 GALS. MIN. FT. OF WIDTH SECTION THRO' ELEMENT (WATER PASSAGES SHADED) COLD AIR PRESSURE INCHES OF WATER ELEMENT TRUNKED FORE & AFT. H.P. DISSIPATED AIR PRESSURE AIR FLOW CUBIC FT. MIN. / SQ. FT. FRONTAL AREA HORSE POWER DISSIPATED @ 100°F DIFFERENCE / SQ. FT. FRONTAL AREA STAMP: CLAYTON DEWANDRE CO. LTD. TITANIC WORKS LINCOLN | ||