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).
Extract from a laboratory report on tests concerning the effects of paraffin wax on condensers.
| Identifier | ExFiles\Box 52\3\ Scan190 | |
| Date | 16th August 1924 | |
| Contd. -4- EFCl/T16.8.24. Extract from Mr. Pignatt's Laboratory Report on these Tests. "One main point elicited from the results of these tests is as follows. The paraffin wax has the opposite effect on the capacity of a condenser when heated, to varnish, though to a much lesser degree, i.e. instead of an increase in capacity with rise in temperature, there is a slight decrease. This is shown by the curves of the three condensers Nos. 1576, 1577, and 1600, treated with pure wax, which are quite consistent in this respect. This feature of the wax is again evident in the behaviour of the two condensers Nos. 1590 and 1609. Normally, as standard condensers, the curves for these two would have risen sharply, especially after reaching 50°C. Impregnation with commercial paraffin wax in the one, and a mixture of commercial wax and resin in the other, appears to have almost counterbalanced this characteristic, resulting in a curve which only gently rises. Commercial paraffin wax, however, appears to be inconsistent and unreliable as indicated by condensers 1312, and 1335. No.1312 rose slightly and broke down on reaching a temperature of 55°C in the first cycle, while No.1335 behaved just like a standard varnished paper condenser. No effect due to the introduction of resin, in the case of condenser 1609 can be observed." EFC. {E. Fowler Clarke - Electrical Engineer} /CAP. EFC. {E. Fowler Clarke - Electrical Engineer} | ||