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).
Comparison of S.S. radiator performance with variations in tube dimensions and water circulation rates.
| Identifier | ExFiles\Box 15\1\ Scan121 | |
| Date | 6th May 1929 guessed | |
| -4- Variation in hydraulic restriction between radiators made to the same drawing. Careful check on soldering and compression with which tubes erected. Improved methods of testing finished radiator. COMPARISON OF S.S. RADIATOR WITH LARGER GAPS BETWEEN TUBES. TYPE OF RADIATOR. | CIRCULATION THROUGH MATRIX 2000 PUMP R.P.M. --- S.S. Radiator 7/6 m/m Tubes 4" long. | 16.8 Gal./min. S.S. Radiator 7/5½ m/m Tubes 4" long. | KW 17.9 Gal./min. V.{VIENNA} Series 8/7 m/m Tubes 4.75" long. | 19.3 Gal./min. This test was taken circulating water round the radiator only with a standard S.S. water pump. The results were obtained on three radiators only, a mean value taken on a number of radiators might therefore be slightly different. LENGTH OF WATER SPACE TOP ROW OF TUBES. Up to E.2 Series (4.75 long tubes.) E73892 3.8" F.2 B Series onwards (4.25 tubes.) E76044 3.060" S.S. (4.00 Tubes) E77065 2.810" | ||