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).
Satisfactory tests to prevent water loss from header tanks during inverted flight in evaporative cooling systems.
| Identifier | ExFiles\Box 179b\2\ img185 | |
| Date | 29th November 1932 | |
| ORIGINAL To R.{Sir Henry Royce} From Ha/Gib. c. to Rg.{Mr Rowledge} Wor.{Arthur Wormald - General Works Manager} c. to Re. By.{R.W. Bailey - Chief Engineer} c. to Lr.{Mr Ellor} Lp.{Mr Lappin} c. to EP.{G. Eric Platford - Chief Quality Engineer} WATER LOSS FROM HEADER TANKS DURING INVERTED FLIGHT. EVAPORATIVE COOLING SYSTEMS. Satisfactory tests have been made on a tank having the internal pipes so arranged to overcome water loss from the tank when inverted for use on evaporatively cooled systems. The method employed is by duplicating the steam pipe. The normal steam pipe is open to a dome at the top of the tank through which the steam passes to the condenser. For inverted flight another dome is fitted at the bottom of the tank and from this the second pipe is taken and is 'U' shaped, the top of the 'U' being at the top of the tank in the normal position; the other end of the 'U' pipe joining the normal steam pipe outside the tank. Siphoning is prevented by a small hole at the top of the 'U' and is closed by a ball valve when the tank is inverted. In operation, in the normal flight one leg of the 'U' pipe is water logged and in the process of inverting this water is thrown out into the steam pipe and passes to the condenser whence it is returned to the system by the hotwell pump - the quantity amounts to approx. 1/4 pint; after which only steam issues from the pipe on the return to normal flight the same thing happens with the other steam pipe which had become water logged when inverted. The scheme is practicable and can be included in future tanks the only point is that the ball valve will have to be made of some non-corrosive material. The attached sketch shows the principle of the arrangement as tested, which was done on a rig only. Ha/T.H.Gibson. Attached: One print. | ||