Cooling Water Filters from Taprogge
To protect the inner parts of a cooling water system, such as feed pumps, heat exchangers, condensers and other equipment from getting clogged and/or damaged one can install various types of filters. The models provided by Taprogge are all automatically back flushed during operation without need for stopping the system, or need for manual handling.
The filtrate and particles which are separated are automatically returned to the original water source thus eliminating the need for transport to waste disposal. These automatic back flush filters are part of our partner Taprogge’s “IN-TA-CT” system, short for Integrated Taprogge Concept.
PR-BW = ”Pressure Relief Back Wash”
This filter type uses the principle of a rotating arm which covers parts of the filter perforation area. Since the outlet of this arm, which has a pipe in its centre, is connected to an outlet down stream of the protected units outlet a pressure drop is created causing a reverse suction which removes the particles stuck to the filter surface by utilizing a minimum of the total water flow.
The rotating arm’s motion can be controlled either through periodic tming and/or with an integrated differential pressure measuring system. A typical cleaning cycle during normal debrios loads, of for example a PR-BW 800 unit (see video) only takes approx. 10-20 sekunder and during this limited time only uses approx. 3-4% of the total cooling water flow. How often the cleaning cycles are required of course depend on the customer’s plant/site conditions and will vary depending on chosen filter type, size and model from case to case.