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).
Proposal for a new method of testing radiators by replicating overheating conditions in a dynamometer house.
| Identifier | ExFiles\Box 78\3\ scan0047 | |
| Date | 30th May 1914 | |
| 5614 To EH. from R.{Sir Henry Royce} Copy to J.{Mr Johnson W.M.} Copy to Wor.{Arthur Wormald - General Works Manager} Copy to E.{Mr Elliott - Chief Engineer} Copy to Na.{Mr Nadin} COPY. RADIATORS. With reference to testing and comparing radiators, it seems to me that we have missed testing these in a very simple manner. The condition under which we are most troubled in with water boiling is with the car running with a following wind, mounting a long steep hill, probably at a slow speed. Now these conditions can be reproduced exactly in a dynamometer house. For instance, the temperature of the dynamometer house can be taken, the doors closed, and the temperature recorded every five minutes. If the dynamometer house were small, any reasonable temperature could probably be obtained by the heat of the car and the exhaust pipes, so that we have here the still air and a fairly high temperature. Now the car could be run on the dynamometer at any load at any speed, and it can be found at some fixed speed, which I should suggest was 1500 engine speed, what horsepower can be allowed to develope to just avoid the water boiling. Several speeds can be tested to find out what speed is most convenient to make a standard, also, a further test can be made to find the quantity of water boiled away in a given time. | ||