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).
Comparing a 'Tank' Thermostat with a standard 'SMITHERMET' thermostat.
| Identifier | ExFiles\Box 156\1\ scan0065 | |
| Date | 18th January 1935 | |
| 44508 To E. {Mr Elliott - Chief Engineer} from Hs {Lord Ernest Hives - Chair} /W. Bell. Hs {Lord Ernest Hives - Chair} /WB. {Mr Brazier / Mr Bell} 23/KW.18.1.35. "Tank" Thermostat R.R.S780. The attached graph shows this type of thermostat in comparison with the standard K.E. 80893 - "H" filling) "SMITHERMET". It is realised of course that these two types operate under different conditions, the former being solely a water flow control, whilst the latter has to overcome the resistance of the shutters. However, the test conditions being the same, the comparison may be of interest, since, although the temperature/load relations are different, the change-over temperatures are practically the same. Hs {Lord Ernest Hives - Chair} /W. Bell. | ||