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.
| Identifier | ExFiles\Box 149a\2\ scan0275 | |
| Date | 20th August 1935 guessed | |
| CHART No. L | 592A VAUXHALL 14 H.P. RADIATOR FRONTAL AREA = sq. ft. COOLING SURFACE = 28.5 sq. ft. FT. RUN TUBING = WT. OF TUBING = LBS CONSTANT AIR = 1030 CUBIC FT. | MIN CONSTANT WATER = 12.3 GALLON | MIN. FT. OF WIDTH DEPTH OF BLOCK = 2 3/32" COPPER USED FOR CONSTRUCTION OF WATER PASSAGES & JOINING STRIP ALL EXPOSED SURFACES TINNED. WIDTH OF WATER PASSAGE = 1/4" WATER FLOW. GALLS/MIN/FT. WIDTH. SECTION THRO' ELEMENT (WATER PASSAGES SHADED) Left Y-Axis: COLD AIR PRESSURE INCHES OF WATER, ELEMENT TRUNKED FORE & AFT Right Y-Axis: B. TH. U.S | HR. | sq. ft. COOLING SURFACE | °F TEMP. DIFF. Bottom X-Axis: AIR FLOW CUBIC FT. | MIN. | sq. ft. FRONTAL AREA Curve Labels: WATER RATE, AIR RATE, AIR PRESSURE | ||