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 chart for the Hadees Car Heater Model H.30, showing the effect of water flow.
| Identifier | ExFiles\Box 137\1\ scan0204 | |
| Date | 5th February 1936 | |
| HADEES CAR HEATER MODEL H.30 L.632/2 EFFECT OF WATER FLOW FOR ELEMENT DETAILS SEE CHART L.632/1 CURVE OBTAINED AT CONSTANT VOLTS = 12 PRESS. DROP ACROSS HEATER IN INS. WATER DISSIPATION PRESS. DROP WATER FLOW GALLS/MIN B.TH.U'S./HR / 120°F.{Mr Friese} TEMP. DIFFce AIR IN TO WATER MEAN CLAYTON DEWANDRE Cº Lº TITANIC WORKS LINCOLN H.{Arthur M. Hanbury - Head Complaints} 5/2/36 | ||