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 table of performance data for three different oil cooler models.
| Identifier | ExFiles\Box 150\3\ scan0057 | |
| Date | 6th October 1936 guessed | |
| Table 1 of Rolls Royce Oil Coolers. Column 1: C/32 (Gallay cooler) Rolls Cooler No.1 with seamed oval tubes Column 2: C/33 Rolls Cooler No.2 Large honeycomb Column 3: C/34 Rolls Cooler No.3 Smaller honeycomb WATER CONDITION Water flow lbs/min: 400, 400, 400 Press drop across Cooler at above flow. ins. mercury: 44, 44, 50 Water temp. (inlet): 80°C = 176°F, 80°C = 176°F, 80°C = 176°F OIL CONDITION Oil Flow lbs/min: 53, 53, 53 Press. drop across cooler at above flow ins. mercury: 1.16, 1.5, 5.15 Oil temp. (inlet): 115°C = 239°F, 115°C = 239°F, 115°C = 239°F Temp. diff. water inlet to oil inlet: 35°C = 63°F, 35°C = 63°F, 35°C = 63°F B.T.US/hr. dissipated: 13200, 15,000, 20,000 Weight of matrix. lbs: 3.175, 2.7, 2.85 | ||