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).
Capacity-temperature tests performed on a 20 HP Goshawk ignition paper condenser.
| Identifier | WestWitteringFiles\K\July1923\ Scan51 | |
| Date | 13th July 1923 | |
| ORIGINAL To R & E.{Mr Elliott - Chief Engineer} from EFC. c. CJ. SPM* c. EW. Da.{Bernard Day - Chassis Design} c. EP.{G. Eric Platford - Chief Quality Engineer} c. Mr. Brock. EFC/L/T13.7.23. K.4430 - CAPACITY-TEMPERATURE TESTS OF 20 H.P. PAPER CONDENSER. Please find attached copy of my assistant's report on a number of careful tests which have been made on the variation of Goshawk ignition condenser capacity with temperature In order to carry out these tests, the condensers were placed in groups of three in a large glass bottle with a cork, through which seven tubes passed, six of the tubes being for the leads to the condensers and the central tube providing for the insertion of a thermometer. This bottle was completely immersed in water in such a manner that only the tubes mentioned projected from the water. The water was contained in an outer glass vessel in which there were another thermometer, two electric heaters and a stirrer, thus the temperature of the water, and consequently the temp. of the condensers, could be accurately regulated. Two groups of condensers of three each were tested in this manner (see attached report for particulars). The results corresponding to the first group A are shown on photostat sheet A attached. The curves corresponding to the second group B, are shown on photostat sheets B1 and B2. The curve on sheet B1 records the whole of the observations for the B group, whereas sheet B2 records only the initial rise of capacity and the final fall of same with temperature. We ought perhaps to say the apparent capacity. | ||