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).
Blueprint with specifications and performance graph for a McCord Car Heater, Model CH. 102.

Identifier  ExFiles\Box 137\1\  scan0266
Date  17th April 1939
  
Mᶜ CORD CAR HEATER Model CH. 102.
FRONTAL AREA .298 ⊓'
Nº OF TUBES 48
FT RUN TUBING 28
GILLED BLOCK 7"x7x3" DEEP WITH
3"x2" CENTRE HOLE FOR MOTOR
OVAL TUBES 1/2"x3/32" 4 ROWS
PITCH OF GILLS 10.9/IN TOTAL Nº 76
TUBE PITCH 7/16" ROW PITCH 3/4"
COPPER GILLS. 12 VOLT MOTOR-1LB 10 1/2oz.
WT. OF HEATER 12LBS.-9ozs.
WT. OF FITTINGS 1LB.-4 1/2 ozs.
4 BLADE SUCKING FAN
6 3/4" DIAM. 25° MEAN ANGLE.
WATTAGE AT 12 VOLTS = 24.2
CONSTANT WATER FLOW 1.5 GALLS/MIN.

Graph Text:
Left Y-Axis: VOLTS OR WATTS
Bottom X-Axis: AIR FLOW CU. FT. / MIN.
Right Y-Axis: B.TH.US/HR/120°F TEMP. DIFFce AIR IN TO WATER MEAN.
Labels: WATTS, VOLTS, DISSIPATION, RHEOSTAT FULLY ON, 2/3 ON, 1/3 ON, RHEOSTAT OFF
  
  


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