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).
The production and testing of square tube radiators using brass and copper.
Identifier | ExFiles\Box 15\1\ Scan362 | |
Date | 11th September 1930 | |
DY{F R Danby}/CS. c. Hs.{Lord Ernest Hives - Chair} c. AHC. X 250. BY3/G.11.9.30. RADIATORS. During my recent visit to WW. R.{Sir Henry Royce} raised the question again of the square tube radiator which we had recently produced. He now expresses a desire that we should produce a further radiator of the square tube type, which has no horizontal water spaces. We are therefore instructing radiators of this type, producing them with plain square tubes in the first instance with distance pieces in the vertical direction, 18 S.W.G. in thickness which will give just over 1 1/2 m/ms. water space. We are making the first of these radiators with brass tubes to save time, and producing two others in copper. For the latter no material is available, and it will take some 5/6 weeks to produce the ingot, roll the material and draw the tubes in copper. By making the first radiator in brass and the later ones in copper, we will get exact comparisons between the cooling capacity of the first type with 1 M/M horizontal water gaps and an exactly similar radiator without such gaps, and we shall further then obtain a comparison between radiators exactly similar in design but made with brass and copper tubes respectively. We have ordered the tubes today, and instructions will be issued early next week. | ||