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).
Heat dissipation from the radiator under various engine loads.
| Identifier | ExFiles\Box 38\2\ Scan225 | |
| Date | 12th July 1923 | |
| R.R. 403A (40 H) (SL 42 12-7-23). J.H.D. -2- EXPERIMENTAL REPORT. Expl. No. REF: Hs{Lord Ernest Hives - Chair}/ACL/LG11.9.24. Eng: R.P.M. B.HP. at rear wheels. Full load. B.Th.U's/min. to cooling water. Full load. Half load. Quarter load. 507 20.1 1680 1220 835 760 30.6 2150 1380 1050 1014 39.6 2595 1690 1275 1267 48.3 2970 1805 1450 1521 53.9 3255 2110 1660 1774 55.2 3770 2232 1770 2030 56.7 4135 2440 1970 Test 2. Tests were previously taken to determine the amount of heat dissipated by the radiator under various conditions. For these tests the radiator was in still air and the air flow through the core was due entirely to the fan, therefore the curves given for the radiator only hold good when there is no additional air flow due to the motion of the car. The three chief factors which influence the rate of heat dissipated of the radiator for these tests are :- (1) Outside air temperature. (2) Air flow induced by fan. (3) Water temperature. The water temp. (top) was adjusted to as near 90 °C for each test and the air temp. remained fairly constant contd :- | ||