Page discussing thermosyphon cooling systems and types of radiator cores.
| Identifier | ExFiles\Box 178\1\ img029 | |
| Date | 15th February 1926 guessed | |
| - 13 - WATER INCREASING IN DENSITY AS IT COOLS. By employing water connections to the radiator of ultra generous dimensions, and arranging the top of the radiator to be the maximum height above the cylinder block, it is possible to obtain a fair circulation, with this system, but it is doubtful whether the flow would ever exceed one-quarter of that obtained by a centrifugal pump of reasonable proportions. Therefore as at low engine speeds few centrifugal pumps are designed to supply more than 3 galls/ft. of width/inch of depth of the matrix, or 18 galls/min. in Graph VI, the efficiency of the system might fall 93% to 65% due to changing over to thermo-syphon cooling and so reducing the circulation to 4 1/2 g.p.m. Thermosyphon circulation is therefore usually confined to small mass produced cars which are able to provide a large radiator face area per unit displacement. (b) Value of types of radiator core. There are three main types of radiator core in existence which are illustrated here. contd. | ||
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).