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).
Blueprint detailing specifications and performance data for a seamed tube oil cooler, including a heat transmission chart.
| Identifier | ExFiles\Box 131\1\ scan0233 | |
| Date | 4th December 1935 | |
| SEAMED TUBE OIL COOLER OIL TO WATER HEAT TRANSMISSION AREA FOR WATER FLOW = 1.010 sq in No OF TUBES = 7 No OF PASSAGES FOR OIL (SERIES) = 6 No OF LOOPS DEEP = 3 DEPTH OF ELEMENT = 2 1/8" COOLING SURFACE TO WATER = .565 sq ft COOLING SURFACE TO OIL, WIRE ONLY = 1.935 sq ft HEIGHT OF ELEMENT = 2 3/8" ACTUAL TEMPS. ON TRIALS - WATER INLET TEMP = A.{Mr Adams} 70°F B. 130°F - OIL MEAN TEMP. = A.{Mr Adams} 170°F B. 190°F WATER FLOW = 42 LBS/MIN. MOBILOIL "A" USED. FOR OIL PRESSURE FIGS. SEE CHART O/31/1 DIAGRAMMATIC ARRGT. OF OIL FLOW. CURVE 'B' ASSESSED AT 30 LBS/MIN WATER FLOW. OIL FLOW. LBS/MIN. B.T.US/HR / 100°F TEMP.DIFF. O/31.B1. E/H 4/12/35 | ||