Increasing cooling of a motor by cleaning the loop
Company: Zement Chalkidas AG, Cement production Company
The client uses a cooling loop for several big motors, which is feeded by three independent 4" inlet pipes. The scale has reduced the diameter of the pipes in that way, that on the one hand, the pumps were over there capacity and on the other hand the amount of coolingwater which has reached the engines was not sufficent anymore, to ensure the necessary cooling. In addition to the problem in the pipe it was expected, that the surfaces where the heattransfer in the motor take place, were as well coated with scale.
Three 4"-Merus® rings were installed, one on each inlet pipe of the loop. In this way it was possible to treat all the incoming water and the whole cooling loop.
In which way the customer checked the results of the trial
1. At the day of the installation, a connector of the pipe was opened. It could be seen and was as well documented, that there was a lot of lime scale everywhere. After two month the same part was opened again. More than half of the scale was away. Or to say it different, the flowing water has removed the existing lime scale and has taken it with it. Only little plates of scale where left on the pipe walls. This is very normal in such cases, where a lot of scale is in the pipes and machines. The scale is getting soft at the surface and than removed layer by layer and flushed out with the flowing water. This shows, that in only a few month a whole system, where have been before several centimeter of lime scale can be cleaned totally.