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 showing the performance characteristics of a Tropic-Aire Universal Model car heater, plotting pressure drop and dissipation against water flow.
| Identifier | ExFiles\Box 137\1\ scan0227 | |
| Date | 14th December 1936 | |
| TROPIC-AIRE UNIVERSAL MODEL CAR HEATER EFFECT OF WATER FLOW FOR ELEMENT DETAILS SEE CHART L.634/1. CURVE OBTAINED AT CONSTANT VOLTS = 12. PRESS. DROP ACROSS HEATER IN INS. WATER WATER FLOW. GALLS/MIN. B.TH.U'S/HR/120°F TEMP. DIFFER. AIR IN TO WATER MEAN PRESS. DROP DISSIPATION LHB 14/12/36 | ||