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 losses to the jacket water of a 40/50 engine, and the factors influencing them.
| Identifier | WestWitteringFiles\K\September1923\ Scan21 | |
| Date | 6th September 1923 | |
| R.R. 493 (40 H) (SL 42 12-7-23). J.H., D.{John DeLooze - Company Secretary} ORIGINAL EXPERIMENTAL REPORT. COPIES TO: RCJ BJ. WOR.{Arthur Wormald - General Works Manager} By E Da{Bernard Day - Chassis Design} EP.{G. Eric Platford - Chief Quality Engineer} PN{Mr Northey} OY. R Expl. No. X790 REF. Hs{Lord Ernest Hives - Chair}2/LG6.9.23. OBJECT OF TEST. Report on heat losses to the Jacket water on the 40/50 RR. and factors influencing these losses - also the heat distribution and thermal efficiency. TESTER. A.{Mr Adams} C. Lovesey. CONDITIONS. Engine used - 40/50 Test Bed Engine. Fuel - Shell No.2 SUMMARY OF TEST. The object of the following experiments was to determine the amount of heat transferred to the cooling water under various conditions, approximating as nearly as possible to those met with under actual running. The tests were as follows :- Test 1. Carried out on high compression engine. Compression ratio 4.4. To determine heat losses under full-load and half-load conditions. See sheet 3. Test 2. Carried out on low compression engine. Compression 3.9. Same conditions as Test 1. See sheet 3. Test 3. The effect of mixture strength on heat losses to cooling water. Sheet 4. Test 4. Effect of ignition timing. See sheet 4. Test 5. Comparison of aluminium and cast iron pistons with regard to heat losses. See sheet 5. contd:- | ||