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To ensure the proper function of complex water systems, 
they must be monitored regularly.

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Often it is not possible to just open the system for a visual inspection of the inner pipes.
 
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Instead we are using key figures such as Delta P for example 
for the monitoring of a heat exchanger.

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In this video we will explain what Delta P means and 
how it can be used to check the effect of the water treatment.

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In general, Delta P shows the difference between two measured values of pressure in the system.

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For example, the difference between the pressure at which the water is pumped into the heat exchanger (P1), ...

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and the pressure at the heat exchanger's outlet (P2).

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The equation for the pressure difference is: Δ (DELTA) P = P2 – P1.

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On its way through the heat exchanger the water pressure decreases 
due to the friction of the water on the inner wall of the pipe. 

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With increasing deposits of limescale and other foreign substances 
the friction is even higher than on clean pipes. 

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In addition, the pipe’s diameter is decreased by the build-up of deposits. 

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A smaller diameter reduces the pressure at the heat exchangers outlet further.

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The water treatment aims to reduce deposits in the pipes. 

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The cleaner the pipe gets, the more Delta P approaches the value of a brand-new heat exchanger.

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Summarized, Delta P – the difference of pressure in a system - 
can be a key figure to monitor the effect of a Merus Ring. 

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We are using Delta P as a long term performance indicator for our water treatment.

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For further information, please visit merusonline.com.