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).
Data sheet of test results showing the temperature of air at the rear of a fan in relation to water temperature at speeds of 25 and 45 m.p.h.
| Identifier | ExFiles\Box 75\3\ scan0115 | |
| Date | 15th October 1923 | |
| Handwritten notes: X3438 X3456 (crossed out) X.3438 See X819 Typed notes: (copied. - 15.10.23. 30.11.23.) TEMPERATURE OF AIR AT REAR OF FAN IN RELATION TO WATER TEMPERATURE. Speed 25 m.p.h. Centigrade Scale. | | | | | | | | | | | | | |---|---|---|---|---|---|---|---|---|---|---|---| | Atmosphere. | 10°C | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | | Top water. | 100°C | 95 | 90 | 85 | 80 | 75 | 70 | 65 | 60 | 55 | 51 | | Bottom wtr. | 89°C | 84 | 79 | 74.5 | 70 | 66 | 60 | 56 | 52.5 | -- | -- | | Rear of Fan.| 53.25°C| 49 | 44.5| 41 | 36.75| 33.5 | 30.5 | 27.5 | 26.5 | 24 | 22.5 | 17.10.23. Speed 45 m.p.h. Centigrade Scale. | | | | | | | | | | | | | |---|---|---|---|---|---|---|---|---|---|---|---| | Atmosphere. | 12.5°C | 12.5 | 12.5 | 12.5 | 13 | 13 | 13 | 13 | 13 | 14.5 | 14.5 | | Top water. | 100°C | 95 | 90 | 85 | 80 | 75 | 70 | 65 | 60 | 55 | 50 | | Bottom wtr. | 90°C | 84 | 79 | 75 | 70 | 65 | 60 | 55 | 50.5 | --- | --- | | Rear of Fan.| 56.5°C | 49.5 | 44 | 39.75| 36.5 | 33.5 | 31 | 29.5 | 27.5 | 25.5 | 23.75 | | ||