Performance chart showing dissipation and water pressure drop for a Clayton S.2 car heater.
| Identifier | ExFiles\Box 137\1\ scan0217 | |
| Date | 16th December 1936 | |
| CHART SHOWING DISSIPATION & WATER PRESSURE DROP FOR CLAYTON S.2 CAR HEATER CONSTANT WATER FLOW - 2 GALLS/MIN. WATER FLOW. GALLS/MIN. 4 BLADE FAN, 4 3/8" DIAM. 30° ANGLE MOTORS - S.2 CA - KLAXON E.C.M. 12V. & 6V. S.2 RA - " D.L.M. "SILENT" 12V. TUBE TYPE 23/4/24/106/37/5/06/15 WATER PRESSURE DROP. INCHES OF WATER AIR FLOW. CUB. FT. / MIN. B.T.U'S/HR/120°F TEMP. DIFF. AIR INLET TO WATER MEAN S.2 CA (12 VOLT) S.2 CA (6 VOLT) S.2 RA (12 VOLT) B.T.U's v. {VIENNA} AIR FLOW PRESS. DROP v. {VIENNA} WATER FLOW JHH 16/12/36 | ||
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).