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 and specifications for a seamed tube oil cooler.
| Identifier | ExFiles\Box 131\1\ scan0234 | |
| Date | 6th December 1935 | |
| SEAMED TUBE OIL COOLER. OIL TO WATER HEAT TRANSMISSION AREA FOR WATER FLOW = 1.010 ☐" NO. OF TUBES = 7 NO OF PASSAGES FOR OIL (SERIES)=6 NO. OF LOOPS DEEP = 8 DEPTH OF ELEMENT = 2 1/8" COOLING SURFACE TO WATER = .565 ☐ft COOLING SURFACE TO OIL WIRE ONLY = 1.935 ☐ft HEIGHT OF ELEMENT 2 5/8" ACTUAL TEMPS. ON TRIALS - WATER INLET TEMP.= A.70°F B.130°F -OIL MEAN TEMP. = A.170°F B.190°F OIL FLOW = 20.2 LBS/MIN. MOBILOIL 'A' USED. DIAGRAMMATIC ARRGT. OF OIL FLOW. Graph Y-Axis: B.T.U.s/HOUR/100°F TEMP. DIFF. Graph X-Axis: WATER FLOW. LBS/MIN. Graph Curves: A, B Signature: Litten | ||