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).
Performance comparison of a superheat system against a standard exhaust system, with a graph showing heating rates over time.
| Identifier | ExFiles\Box 66\2\ scan0216 | |
| Date | 1st July 1926 guessed | |
| contd :- -3- MANIFOLD. USUAL POSITION TO HOT SPOT The next curves give the rate of heating with the super-heat system; the standard exhaust curve being inserted for com-parison. The heating rate is increased by employing the small (.025) dia. feed hole but even then approx. 2 1/4 mins. elapse before there is any appreciable rise in temperature whereas the standard system responds immediately. After about 4 1/2 mins. running, the temperature reached is the same as that of the exhaust heated system after the same time, but it soon assumes a con-stant value of 95°C, while the other still contd :- GRAPH DATA: Title: SUPERHEAT SYSTEM. Y-Axis: TEMP. °C (0, 20, 40, 60, 80, 100) X-Axis: TIME - MINS. (0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 ack.) Curve 1: STD EXH SYSTEM. Curve 2: .062 DIA FEED HOLE Curve 3: .025 DIA FEED HOLE. | ||