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).
Data sheet detailing the heat distribution and thermal efficiency of an E.A.C-1 engine with a Knave carburetter and standard induction system.
| Identifier | WestWitteringFiles\K\November1923\ Scan42 | |
| Date | 12th July 1923 guessed | |
| HEAT DISTRIBUTION & THERMAL EFFICIENCY OF E.A.C-1 ENGINE KNAVE CARBURETTER - STD. E.A.C. INDUCTION SYSTEM. PAGE 1. Fuel - Shell No. 2. Sp.{Mr Spinney}gr.{George Ratcliffe} = .759 Cal.{Mr Calvert} Val (lower) = 19000 B.Th.U's/Lb. Bar: - 757 m/m.{Mr Moon / Mr Moore} Air. = 16.5ºC. Comp. ratio = 4.6. Full load conditions. Oil temp. 65ºC. First Table: COOLING WATER. | R.P.M. | B.H.P. | Pet. con: Pts. hr. | Pet. con: Pts. BHP. hr. | Frict: HP. to drive engine | Gall. min. | Lbs. min. (corrected for temp:) | tºC Inlet. | tºC Outlet. | ºC to - ti | ºF to - ti | Aver: temp: cooling water | |---|---|---|---|---|---|---|---|---|---|---|---| | 600 | 37.10 | 21.2 | .600 | 4.00 | 6.993 | 68.25 | 65 | 78 | 13 | 23 | 160.7 | | 750 | 46.60 | 27.1 | .580 | 6.25 | 8.511 | 83.00 | 68 | 79.5 | 11.5 | 20.7 | 164.75 | | 1000 | 61.25 | 36.2 | .590 | 8.75 | 10.85 | 105.80 | 69 | 78.5 | 9.5 | 17.1 | 164.75 | | 1250 | 74.00 | 41.15 | .556 | 12.50 | 15.19 | 148.25 | 70.25 | 79.5 | 9.25 | 16.65 | 166.73 | | 1500 | 87.5 | 49.5 | .565 | 16.10 | 18.79 | 183.30 | 71.0 | 79 | 8.00 | 14.4 | 167.0 | | 1750 | 99.8 | 57.75 | .578 | 19.85 | 22.52 | 219.5 | 73.75 | 81.5 | 7.75 | 13.95 | 171.7 | | 2000 | 107.5 | 63.4 | .590 | 25.00 | 26.83 | 261.5 | 73.5 | 80.5 | 7.0 | 12.6 | 170.6 | Second Table: | R.P.M. | Initial fuel energy. B.Th.U's Ht. Supplied. | Thermal eqvt. work done. | Ht. loss to friction. | Ht. loss to jackets. | Radiation exhaust, pumping etc. | |---|---|---|---|---|---| | 600 | 6369 | 1573 | 169 | 1597 | 3030 | | 750 | 8143 | 1975 | 265 | 1718 | 4185 | | 1000 | 10870 | 2597 | 371 | 1890 | 6012 | | 1250 | 12360 | 3138 | 530 | 2468 | 6224 | | 1500 | 14870 | 3710 | 682 | 2639 | 7839 | | 1750 | 17360 | 4231 | 842 | 3062 | 9225 | | 2000 | 19050 | 4558 | 1060 | 3295 | 10137 | | ||