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 for a Bentley Radiator (Gallay 3 Row Block), showing HP dissipated and water pressure against water flow.
| Identifier | ExFiles\Box 149a\2\ scan0367 | |
| Date | 25th February 1936 | |
| L611B2 BENTLEY RADIATOR (GALLAY 3 ROW BLOCK) FRONTAL ASPECT 3.2 sq. ft. FRONTAL AREA 3.18 sq. ft. NO. OF TUBES - 141 (3 ROWS) DEPTH OF BLOCK - 50 M.M. HP DISSIPATED CONSTANT AIR FLOW = 4860 CU.FT./MIN. AIR INLET TEMP 60°F WATER MEAN TEMP 160°F WATER PRESSURE Left Y-Axis: WATER PRESSURE DROP ACROSS RADR LBS/SQ.IN. (INCLUDING HEADERS AND INLET AND OUTLET PIPES) Right Y-Axis: H.P. DISSIPATED/100°F TEMP. DIFFC. AIR INLET TO WATER MEAN X-Axis: WATER FLOW GALLS/MIN EWS 25/2/36 | ||