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).
Test data table (Test 3) showing results of oil flow, temperature, and heat extraction measurements.
| Identifier | ExFiles\Box 179b\3\ img259 | |
| Date | 17th February 1933 | |
| Test (3) -3- No.414.2/KT.17.2.33. Time for 1 qt. from by-pass, secs. | By-pass flow lbs/min. | Cooler flow lbs/min. | Inlet Temp. oC. | Outlet Temp. oC. | Drop in Temp. oC. | Heat to oil BTU's/min. | BTU's extracted per min. per deg. difference betwn mean oil temp. and water temp. - | 0 | 20.6 | 100 | 93 | 7.0 | 130 | 4.92 25.5 | 5.38 | 15.22 | 100 | 92.8 | 7.2 | 98.6 | 3.74 15.0 | 9.15 | 11.45 | 100 | 92.0 | 8.0 | 82.5 | 3.17 12.0 | 11.43 | 9.17 | 100 | 91.8 | 8.2 | 67.6 | 2.61 10.0 | 13.72 | 6.88 | 100 | 87.0 | 13.0 | 80.5 | 3.43 9.0 | 15.25 | 5.35 | 100 | 87.0 | 13.0 | 63.6 | 2.67 7.4 | 18.55 | 2.05 | 100 | 84.5 | 15.5 | 28.6 | 1.28 7.0 | 19.60 | 1.00 | 100 | 89.0 | 21.0 | 18.0 | 0.90 Note. Temp. difference in calculation of last column is the difference between the water temp (70oC) and the mean temp. of oil entering and leaving cooler. The results are graphed on the accompanying print. | ||