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).
Letter from Clayton Dewandre Company Ltd. reporting on the results of oil cooler trials for the Phantom III engine.
| Identifier | ExFiles\Box 131\1\ scan0210 | |
| Date | 18th August 1936 | |
| x 1114 Steadman REGISTERED OFFICE: TITANIC WORKS, LINCOLN. TELEPHONE: LINCOLN 1156/7. TELEGRAMS: TITANIC, LINCOLN. CODES USED: A.B.C. 6TH EDITION 5 LETTER. BENTLEY'S AND PRIVATE. CLAYTON DEWANDRE COMPANY LIMITED. DIRECTORS: C.H.DADE, (CHAIRMAN). C.T.BLACKLOCK, (MANAGING DIRECTOR). R.M.GRANT, C.A. CUSTOMERS' CARS ARE DRIVEN BY MEMBERS OF OUR STAFF ENTIRELY AT CUSTOMERS' OWN RISK. REF. SEW/BV TITANIC WORKS, LINCOLN, ENG. 18th August 1936 Messrs. Rolls-Royce Ltd., Nightingale Road, DERBY. h/w to AS/SMY Dear Sirs, For the attention of Mr Steadman. OIL COOLER TRIALS. The three oil coolers received from you have now been tested for heat dissipation from oil to water, pressure drop to oil flow, pressure drop to water flow and pressure drop to varying oil temperature. The coolers were: Trial 0/32. A 4-rows, seamed oval tube element with gills of strip metal. Water flowing through tubes, oil over the gills. Trial 0/33. A honeycomb tubular element, water flowing through the tubes and oil outside the tubes. Trial 0/34. As No. 2 but smaller tubes. The oil used in each case was Mobiloil "A". The conditions required were specified by you as under:- Oil flow - 53-lbs/min. at 115°C. (239°F.{Mr Friese}) inlet (max.) temp. Water flow - 400-lbs/min. at 80°C. (176°F) inlet temp. These are the limiting conditions of operation on the Phantom III engine. With the existing equipment of our Research Department it was found that a water flow of 400-lbs/min. could not be obtained, the maximum that was reached for any of these coolers being 120-lbs/min. By taking a number of flows between 0 and 120-lbs/min, however, the required output at 400-lbs/min. water has been assessed. Similarly, although a maximum oil temperature of 239°F.{Mr Friese} was not obtained, the heat output at that figure has been assessed by taking a series of trials at varying oil temp. (135-200°F) with an approximate constant temperature difference between the oil inlet and water inlet. Table I shows the resultant heat dissipation under the required conditions, also the press. drop across the coolers for both oil and water. 1. | ||