Rolls-Royce Archives
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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).
Performance graph and specifications for a Tropic-Aire Duplex Model car heater.

Identifier  ExFiles\Box 137\1\  scan0205
Date  3rd December 1936
  
TROPIC-AIRE CAR HEATER DUPLEX MODEL
DOUBLE ENDED MOTOR WITH 2 FANS 4 1/2" DIA. SUPPLYING AIR TO 2 ELEMENTS.
ELEMENT 4 5/8" HIGH, 5" WIDE, 2 2/3" DEEP. WGT 2 5/8 LBS EACH.
TOTAL HEATER 11 3/4 LBS + 1 3/4 LBS FITTINGS.
ELEMENT OF 40 GILLS OF CU. ABOUT .005" THICK WITH SLIGHT FRONT CORRUGATION.
THREADED WITH 3 ROWS NON STAGGERED CU. OVAL SEAMED TUBES.
16 TUBES PER ROW, TINNED CU. 2MM X 13 MM.
CONSTANT WATER FLOW 1.97 GALLS/MIN.
VOLTS OR WATTS
AIR FLOW CU. FT / MIN.
B.TH.U'S / HR / 120°F TEMP. DIFFCE AIR IN TO WATER MEAN
WATTS
VOLTS
DISSIPATION
LOWEST CONTROL ON RHEOSTAT
MIDWAY
9.75V
FULLY "ON" RHEOSTAT
12 V
CLAYTON DEWANDRE CO LTD
TITANIC WORKS
LINCOLN
EWS
  
  


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