Since the direct use of boilers’ hot water is not possible for health consumption, a parallel circuit is used to provide hot water with consumption standards. This circuit is based on using a heat exchanger to increase the temperature of the refined cold water without mixing it with boilers’ water. Multiple exchangers can play this role. Double wall exchangers which are economical and high volume are used in small engine rooms. Shell & Tube exchangers can be used for further usage, because of their higher heat transfer efficiency. In some cases in which the amount of water consumption is not always the same (such as residential places) the generated hot water can be stored in coiled sources. In recent years, the use of plate exchangers which have very small size has also become common.
In any case, exchanger cold water lines have extreme potential of scaling. Lime-scales are formed in heating consumable water lines, causing the sanitary hot water temperature to drop. Scaling in these lines results in drop of pressure and debit. Scaling in exchangers causes increased water consumption, hot water pressure drop and finally lack of hot water supply at required temperatures. Installing Raymoj anti-scaling device on consumable water circuit enables you to have stable non-fluctuating sanitary hot water.