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).
Log of temperature readings from a heater test on a water system, measuring temperatures at various points over time.
| Identifier | ExFiles\Box 137\1\ scan0004 | |
| Date | 9th May 1917 | |
| Note:- The Heaters used were two 500 watt connected in series on 200 v.{VIENNA} Thermometers were placed on circuit as follows:- No.1. Immediately above Heater. No.2. No:6. Cylinder water jacket outlet. No.3. " 1 " " " No.4. The highest point of the water system, in this case, the top of the radiator. No.5. Air Temperature °C. Time. | No.1. | No.2. | No.3. | No.4. | Air No.5. | Amps. | Remarks. 5-0 PM | 11.5 | 11 | 10.5 | 11 | 8 | 9 | Cold. 5-15 | 26 | 20.5 | 18.5 | 15 | 7.5 5-30 | 27 | 24 | 19 | 21.5 | 7.5 6-0 | 29 | 25.5 | 21 | 22.5 | 7.5 6-30 | 27.5 | 25 | 21.5 | 23 | 6.5 7-0 | 27.5 | 26 | 21.5 | 23 | 6 7-30 | 28 | 26 | 22 | 23 | 6 8-0 | 28 | 27 | 22 | 24 | 6 8-30 | 30 | 27.5 | 23 | 25 | 6 9-0 | 30 | 27 | 24 | 25.5 | 6 9-30 | 30 | 28 | 24 | 26 | 6 10-0 | 30 | 28 | 23 | 25.5 | 5 10-30 | 30 | 28 | 24 | 25 | 5 11-0 | 30.5 | 28 | 24 | 25.5 | 5 11-30 | 30 | 28 | 24 | 25 | 5 12-0 | 30 | 27.5 | 24 | 25 | 5.5 12-30 | 30.5 | 29 | 25 | 26 | 5 1-0 | 30 | 29 | 25 | 25.5 | 5 1-30 | 30.5 | 29 | 24.5 | 26 | 5 2-0 | 30 | 29 | 24 | 25.5 | 5 2-30 | 30 | 28.5 | 24 | 25 | 5 3-0 | 30 | 27.5 | 22 | 23.5 | 4.5 3-30 | 29 | 27 | 22 | 23 | 4 4-0 | 29 | 27 | 22 | 23 | 4 4-30 | 30 | 27 | 22.5 | 23.5 | 4 5-0 | 30 | 27.5 | 22.5 | 24.5 | 4 5-30 | 30 | 27.5 | 23 | 25 | 3.5 6-0 | 30 | 27.5 | 23 | 25 | 3 Meal hour for night shift, there would be more current as all lights would be off. (Footer text, printed upside down): R.R. 235 A (770 H) (S.D.) 442 9-5-17(2) C. 1965. | ||