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 the oil to water heat transmission performance of a seamed tube oil cooler.
| Identifier | ExFiles\Box 131\1\ scan0231 | |
| Date | 4th December 1931 | |
| SEAMED TUBE OIL COOLER OIL TO WATER HEAT TRANSMISSION AREA FOR WATER FLOW = 1.01 □" 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.{Mr Adams} 70°F B. 130°F.{Mr Friese} - OIL MEAN TEMP. = A 170°F.{Mr Friese} B 190°F Graph: Top X-axis: OIL FLOW LBS/MIN with markers 10, 20, 30. Bottom X-axis: WATER FLOW LBS/MIN. with markers 50, 100, 150. Y-axis: B.T.U.'S / HR / □ FT WATER COOLING SURFACE / °F LOG. T.D. with markers 100, 200, 300. Curve Labels: WATER RATE "B", WATER RATE "A", OIL RATE "B", OIL RATE "A". CONSTANT WATER FLOW = 42 LBS/MIN. CONSTANT OIL FLOW = 20.2 LBS/MIN. MOBILOIL "A" USED. DIAGRAMMATIC ARRGT. OF OIL FLOW. CURVES DRAWN THRO' MEAN OF TRIAL SPOTS. MAXIMUM ERROR = ± 10 % | ||