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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).
Graph comparing the temperature rise of a hot spot on an F.2.B. Series Phantom engine using either exhaust or water heating.

Identifier  ExFiles\Box 66a\2\  scan0206
Date  9th June 1928
  
COMPARISON OF THE TEMP RISE OF HOT SPOT ON F.2.B. SERIES PHANTOM WITH EXHAUST & WATER HEAT.

ENGINE STARTED UP FROM COLD & RUN LIGHT AT 700 R.P.M.

STD EXHAUST HEATING WITH BUTTERFLY IN DOWN PIPE CLOSED.

WATER HEATING - NO RADIATOR. THE WHOLE OF THE JACKET WATER - BEING CIRCULATED THRO THE HOT SPOT (2.5GALL)

Y-AXIS: TEMP OF OIL IN HOT SPOT °C
X-AXIS: TIME IN MINS AFTER ENGINE STARTS.
  
  


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