Measurements Executed on the CWD 108 D Pump Provided with a Fire Hose Air Chamber

摘要

Up to now CWD deepwell pumps always have been equipped with normal air chambers. As air will dissolve in the water constantly, it is necessary to add air. The problem of air dissolving in the water can be solved by separating air and water by means of a membrane. Within CWD such a system was designed and baptized as the Fire Hose Air Chamber (FHAC) because a fire hose is used as membrane. A CWD 108D with a FHAC has been built and tested at the TUE laboratory test rig. Two configurations have been tested to check the influence of the rate between static pressure in the air chamber and static head. The part of the test pump, in which the FHAC is mounted, was made out of a transparent pipe to make visual observation possible. The scope of the visual observation was to see if the hose makes sharp bends at the places of the end flanges and its general behavior.