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).
Test results and procedures for an oil cooler, including temperature readings at different RPMs.
| Identifier | ExFiles\Box 179b\3\ img258 | |
| Date | 17th February 1933 | |
| -2- Results - | R.P.M. | Water Inlet. Temp. °C. | Oil Inlet. Temp. °C. | Oil Outlet. Temp. °C. | Temp. drop of oil across cooler °C. | |---|---|---|---|---| | 4500 | 70°C. | 100°C. | 92.5°C. | 7.5°C. | | 4500 | 70°C. | 110°C. | 99.5°C. | 10.5°C. | | 4500 | 70°C | 120°C | 105.5°C | 14.5°C. | (2) Determination of total effective temp. drop caused on system by introducing oil cooler in system. Un-fortunately it was found impracticable to carry out this test as the shutting down and changing of oil pipes necessary to put cooler in system completely upset steady conditions. (3) To compare the amounts of heat removed from oil (by this cooler) with different oil flows through the cooler. The water inlet temp. was kept at 70°C (engine r.p.m. 3750), and the oil inlet at 100°C. The flow of oil through cooler was varied by adjusting the by-pass tap. Results attached :- | ||