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).
The results of condenser tests under various temperature conditions.
| Identifier | WestWitteringFiles\K\December1923\ Scan37 | |
| Date | 12th July 1923 | |
| R.R. 493A (40 H) (SL 42 12-7-23). J.H., D.{John DeLooze - Company Secretary} EXPERIMENTAL REPORT. -2- Expl. No. 4430 REF: P.C.4. Contd. signs of waxing. The ratios of the capacity observed at the end, i.e. 16°C, to that observed at the beginning, 3.5°, were respectively:- Condenser No. Ratios. 32 1.21 613 1.16 741 1.17 Bosch 1.19 The results, together with other relevant details of the condensers, are given tabulated below:- No. of Condenser. | 32. | 613 | 741 | U.S.A. Bosch. | Remarks. ------------------|-----------|-----------|-----------|---------------|---------------------------------- K before heating | .182 | .399 | .344 | .710 | test. | 18°C | 18°C | 18°C | 18°C | ------------------|-----------|-----------|-----------|---------------|---------------------------------- K after heating | .305+ | .573 | .419 | .790 | +Value after test. | 18°C | 18°C | 18°C | 18°C | second heat test. ------------------|-----------|-----------|-----------|---------------|---------------------------------- K before first | .270 | .625 | .418 | - | freezing test. | 15.5°C | 15.5°C | 15.5°C | | ------------------|-----------|-----------|-----------|---------------|---------------------------------- K after first | .265 | .610 | .415 | - | freezing test. | 15°C | 15°C | 15°C | | ------------------|-----------|-----------|-----------|---------------|---------------------------------- K before second | .240 | .578 | .402 | .766 | freezing test. | 14°C | 14°C | 14°C | 14°C | ------------------|-----------|-----------|-----------|---------------|---------------------------------- K after second | .200 | .520 | .358 | .672 | exposure at out- | 3.5°C | 3.5°C | 3.5°C | 3.5°C | side temperature | ------------------|-----------|-----------|-----------|---------------|---------------------------------- K at the end of | .242 | .601 | .418 | .800 | second freezing | 16°C | 16°C | 16°C | 16°C | test. | ------------------|-----------|-----------|-----------|---------------|---------------------------------- K 24 hours later. | .230 | .590 | .410 | .776 | | 16°C | 16°C | 16°C | 16°C | Contd. | ||