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).
Instructions detailing the results of condenser testing, noting permanent capacity increases after heating.
| Identifier | WestWitteringFiles\K\July1923\ Scan56 | |
| Date | 6th November 1918 | |
| RR-238 (300 Bks.) (SF 152. 6-11-18.) MP 197880 ROLLS-ROYCE LIMITED. INSTRUCTIONS. To Order No PB 104 (3) Customer's No. 19 taken resulting in a set of subsidiary curves, which with the main curves, shew how many times the condensers were tested at, the temperatures passed through each time, and the increase in capacity with each cycle. It will be seen from the curves (second proof) that each condenser has acquired a permanent increase in capacity. This increase is about 40% of its initial value and appears to depend, in amount, on the temperature to which it is raised above a certain point (apparently about 50°C) and the number of times it is raised above that point. Actually the increases are as follows:- N°4. 42.1% N°5. 42.9% N°6. 38.6% .Next it will be seen that the leakage point on the first curves is at about 53°C but that on the final curves it is Cont'd.{John DeLooze - Company Secretary} Signed This Sheet must be filed on completion of the work. | ||