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).
Internal memorandum regarding comparative testing on the efficiency of extruded copper tubes versus brass tubes for radiators.
| Identifier | ExFiles\Box 38\2\ Scan168 | |
| Date | 12th September 1921 | |
| X3456 EWT. for R.R.Inc. From Hs.{Lord Ernest Hives - Chair} Hs{Lord Ernest Hives - Chair}6/LG6.12.21. EXTRUDED COPPER TUBES FOR RADIATOR. OYI/G12.9.21. So far we have not been able to make comparative tests as regards the efficiency of the copper tubes compared with the brass. We will, however, do this at the first opportunity. Our means, of course, for carrying out these tests would be comparatively crude. We think that the tube makers will very likely have this information and we would be very pleased if you could get into communication with them and find out. We should imagine that the copper tube would certainly be the most efficient but we have no idea what the percentage of gain would be. We do intend to carry out comparative tests at the first opportunity. Hs.{Lord Ernest Hives - Chair} [Watermark: MADE AT CROXLEY MILL] [Watermark: JOHN DICKINSON BOND] | ||