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 tables for pressure, temperature, and flow rates with a relief spring.
| Identifier | ExFiles\Box 135\3\ scan0046 | |
| Date | 21th March 1932 | |
| -2- Hs{Lord Ernest Hives - Chair}/B1.4/A.{Mr Adams} 21.3.32. contd. [Table 1] | Inlet Press lb/sq.in. | Relief Delivery G.P.H. | |---|---| | | Temp 20oC | Temp 80oC | | 10 | 9.8 | 42.5 | | 15 | 15.5 | 85.5 | | 20 | 38.8 | 128 | | 25 | 47.3 | 149 | | 30 | 65.5 | 164 | | 35 | 92.5 | 180 | | 40 | 128 | 210 | | 45 | 139 | 225 | | 50 | 170 | 244 | With a set of delivery of 250 G.P.H. and at a temperature of 80oC the pressure difference between the filter inlet and outlet pipes measured 3 lb/sq.in.+1 from 0: to 30 lb/sq.in. out let pressure. Outlet pressure lb/sq.in. 0 5 10 15 21 25 30 Inlet Pressure lb/sq.in. 3 9 13.5 18.5 23 28 33 A relief spring giving an initial relief pressure of 5 lb/sq.in. was also fitted, and the pressure differences measured for a set delivery of 250 G.P.H. The results were practically the same as with the original relief spring. [Table 2] Relief Pressure 5 lb/sq.in. | Temp oC | Pressure lb/sq.in. | Pressure. Difference. lb/sq.ins. | |---|---|---| | | Inlet pipe | Outlet pipe | | 20oC | 24 | 3 1/4 | 20 1/4 | | | 41 | 25 | 16 | | 80oC | 2 1/4 | 0 | 2 1/4 | | | 28 | 25 | 3 | Hs{Lord Ernest Hives - Chair}/S1. | ||