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).
Test results and conclusions for a super-heated induction pipe system, showing heat added to cooling water at various engine speeds.
| Identifier | WestWitteringFiles\P\2July1926-September1926\ Scan105 | |
| Date | 1st August 1926 guessed | |
| contd :- -3- | CONDITION. | R.P.M. | B.T.U's/MIN. ADDED TO COOLING WATER. | % OF HEAT ADDED TO THE NORMAL HEAT FLOW TO THE WATER. | |----------------|--------|--------------------------------------|-------------------------------------------------------| | Light running. | 1000 | 7 | --- | | Full load. | 1000 | 87 | 3.1 | | * | 1500 | 48 | 1.26 | | * | 2000 | 28 | .63 | The probable reason why more heat is added at low speeds is that the higher speeds subtract more heat from the hot spot for evaporation than the lower speeds when the quantity of fuel is less. As the amount of water admitted to the boiler is constant and immediately flashed into steam, the heat supply available at the hot spot would be substantially constant over the whole speed range. CONCLUSIONS :- With regard to the rate of warming up from cold, we are of the opinion that with the present induction pipe the super-heated system does not operate with sufficient rapidity and does not compare favourably in this respect with the standard system. As the problem is chiefly one of cold distribution, we are working with the object of finding an induction pipe which is less dependent upon heat so that a more moderate heating system - like the superheated - would be all that was necessary, and as well as improving the general running, the troubles attending the present standard system would be avoided. Hs{Lord Ernest Hives - Chair}/A.C.Lovesey. | ||