As we see in operation the pressure drop of the water network increased to 18 meters. Art. In the question: how to determine to what the outside temperature given the heat exchanger can ensure itself takes place heating system water to the desired temperature according to schedule, and when should I plan for rinsing PEX tubing?
Obviously, the simple measurement of differential pressure response to this question can not give.
Some authors, on the contrary offer too sophisticated ways to control pollution plated heat exchangers. For example, in [5] for quality control of chemical cleaning plated heat exchangers is proposed to use a special stand (combined with the washing plant), working on the principle of determining the time of convergence of water temperatures in the two circulation loops, separated by the test plated heat exchangers. Stand filled with lots of additional equipment (pumps, electric heating, loops, flow meters, etc.) need to be connected to both circuits plated heat exchangers (although flushing is exposed only one), and for these reasons, virtually not applicable for widespread use at sites of low power system. (Said bench can be recommended only for testing various technologies washes using new cleaning solutions.)
The author of this article developed an effective method for diagnosing the state of PEX plumbing the relative coefficient of PEX piping contaminated heat exchanger in relation to the same heat exchanger with an absolutely pure, of the surface. For the analysis used only the results of measurements of 4 temperatures (inlet and outlet heat exchanger on both threads).
Essentially, the method is as follows. Recognized authorities domestic, NM Singer, in his works (see eg [1, p. 125]), both theoretically and practically proved the existence of a remarkable setting of water-water heater “F”, the value of whose to the heater for a given value of almost constant.
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