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).
Further tests on Bentley radiators at Brooklands.
| Identifier | ExFiles\Box 155\1\ scan0166 | |
| Date | 1st November 1934 | |
| (786) 1.11.34. Report on Further Tests on Bentley Radiators at Brooklands (see previous report). Tests. A number of radiator tests were carried out at Brooklands in the usual manner for the following purposes - (1) To check previous comparisons between a 70 m.m. thick Marston Mark V radiator matrix and a 58 m.m. thick Marston Mark V radiator matrix. (2) To check 58 m.m. Marston Mark V radiator previously tested in France, against the similar matrix tested by us at Brooklands previously. (3) To check air intake temperatures with both shutter and thermostatic by-pass control of water temperature. (4) To determine extent to which matrix area can be reduced when using this 58 m.m. Marston Mark V matrix, in order to obtain same cooling as with present standard matrix. (5) To obtain relative cooling values of three forms of fan and also the speed lost through power used in driving same. Results. These are shown on attached sheets and are self-explanatory. Conclusions. (1) From sheet (1) it is seen that no material increase in cooling is obtained with the 70 m.m. Marston Mark V matrix as compared with the 58 m.m. thick similar matrix. This is not logical and we propose to consult the makers of these matrices for an explanation. This is a confirmatory test and the results may therefore be relied on. (2) From sheet (2) it is seen that the cooling in the case of both 58 m.m. Marston Mark V matrices is approximately the same (within the limits of experimental error etc.) | ||