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).
Outlining a proposed test procedure to determine the heat dissipation capabilities of a radiator for a 200 HP engine.
| Identifier | ExFiles\Box 78\3\ scan0066 | |
| Date | 12th March 1915 | |
| [Handwritten top left] 133/5 COPY. To Wor.{Arthur Wormald - General Works Manager} for EH & Hy.{Tom Haldenby - Plant Engineer} from R.{Sir Henry Royce} Copy to J.{Mr Johnson W.M.} [Stamped diagonally] COPY. [Signature] IB/12315. March 12th.1915. [Handwritten note in top right] We have asked him to say how much water is required cooling such as 24 gallons per minute from 75°C to 35°C. Re Radiators. I understand Mr Hives will be too busy to get us the radiator data necessary for us to be able to discuss the question of the radiator in connection with the 200 HP and the 150 HP engine with the Admiralty. I think, therefore, we had better get Mr Haldenby to rig up a radiator with a motor driven fan, and subject this radiator to various wind pressures, say, from 40 to 80 miles an hour impinging on the front of the radiator, and to find out for us how many heat units the radiator is capable of getting rid of. The water should enter the top of the radiator at about 75°C., and the flow should be regulated so that it leaves the radiator at the bottom at about 35°C. With a fall of temperature of 40°C. it will only be necessary to vary the quantity of water as we vary the speed of the air impinging on the radiator. The air should strike the front of the radiator in just the same way as it would do if the radiator were on a car travelling at the speeds suggested. There must be no casing around the radiator to force the air through the tubes, but one might have some kind of wood or metal box, preferably circular and larger than the radiator, which could come | ||