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).
Letter to Metropolis Garages Ltd. providing heat flow and radiator performance data for the Phantom III engine.
| Identifier | ExFiles\Box 90a\6\ Scan244 | |
| Date | 5th May 1939 | |
| 262. Experimental Dept. Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell}C/MH.{M. Huckerby} 5th. May, 1939. Metropolis Garages Ltd., Maplise Road, LONDON, W.14. For the attention of L.F.Dyer, Esq. Dear Sirs, We are in receipt of your letter of the 3rd. inst. and give herewith the information you require regarding the Phantom III engine. The heat flow to the water circulation in the engine amounts to approximately 7500 BTU's/min., the circulation being 37.5 galls/min. and the heat rise 20°F at high speeds. From tests we have taken on the radiator you supplied, two of these coupled together, would, we consider, be sufficient to cool the Phantom III engine providing there is adequate external cooling water passed through the radiator. The figures we have obtained on the radiator are as follows:- Approximately 4000 BTU's/min. are dissipated (half Phantom III requirement) with a cold water circulation of 15 gallons/min. In view of the above, therefore, if Mr. Hall is agreeable to coupling two radiators of this type in parallel, there is no necessity to go in for a Serck radiator providing some overflow arrangement is made to cater for expansion and filling etc. | ||