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).
Experiments to test the deflection and expansion of crinkled type radiators.
Identifier | ExFiles\Box 24\4\ Scan019 | |
Date | 21th June 1915 | |
C O P Y. To Wor.{Arthur Wormald - General Works Manager} for Hy.{Tom Haldenby - Plant Engineer} from R.{Sir Henry Royce} Copy to J.{Mr Johnson W.M.} " " Na.{Mr Nadin} " " E.{Mr Elliott - Chief Engineer} R3/IB21615. June 21st.1915. Re Radiators. ---------- With reference to the crinkled type of radiator, I shall be glad if you will make a test of the amount of deflection that takes place between the upper tank and the lower tank of these radiators for a given change of load placed on the upper tank, to see whether the crinkles deflect very easily and what tension they are likely to put on the side plates, if we fix the side plates at the top and the bottom. The second experiment would be to find out what is the expansion, or change of distance between the upper and the lower plates, due to a change of temperature of water within them. Therefore, supposing that the change of distance was .025" from 15°C to 100°C., but that the change in this same dimension with load would represent 100 lbs., we should therefore expect that if the side plates remained the temperature of the external air, the crinkles could exert upon them a pressure of 100 lbs. You will perhaps remember that the original type of radiator we used on our cars had straight vertical tubes, and when these got hot they expanded, and the structure was so rigid that it drew | ||