ENERGY SAVING
constituents of water make-up - bacteria and chemicals which are often misinterpreted leading to false positives or negatives. What we need is a technology that identifies the causes of corrosion and degradation, allowing early intervention before any damage occurs. Remote (real-time) condition monitoring makes this possible. Not only does the more traditional approach leave closed circuit systems more open to corrosion, it is also more likely that wasting processes, such as flushing and over-dosing with chemicals may be employed. Flushing, employed during precommission cleaning of new systems and sometimes after maintenance or where a bacterial problem has been identified, uses huge volumes of water. Flushing is may be necessary evil, but if a better understanding of the true make-up of water condition is achieved, then it can be reduced or sometimes avoided altogether.
…In with the new
Over the past few years there have been huge strides in the ways in which closed system condition is checked and understood. The advent of real-time remote monitoring means that we can now get a true and continuous picture of what’s going on in a water system, dramatically reducing the risk of repairs and breakdown, while ensuring that energy efficiency and design life is achieved.
By collecting data 24/7 on a wide range of parameters, including the real-time corrosion rate of pipework and components, unhealthy conditions can be easily spotted. Typical measurements include dissolved oxygen, pressure, make-up flow, dosing levels, pH, temperature and corrosion rates. Within an intelligent monitoring system these parameters are tracked and interpreted, and excessive / sudden changes are immediately flagged-up to responsible parties. Combined with an understanding of cumulative data, an overall picture is created with trends and ‘normal’ fluctuations identified, further reducing the
impulse for inappropriate interventions. Real-time monitoring helps ensure that a HVAC system is handed over in the best possible condition following PCC, reducing the risk of future problems. In fact, remote water monitoring’s impact on this essential part of a closed system’s life is starting to make a real impact such that the latest BSRIA guide to this process – BG29 2020 – now includes extensive information on its benefits; a marked change since BG29’s previous incarnation in 2012.
Remote and sustainable Another key benefit of real-time monitoring is the fact it is remote – something that has become even more important during the Covid 19 pandemic. When changes in condition occur, an alert is sent direct to any internet enabled device, with building owners and maintenance teams able to log-in to view what’s going on in their
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closed circuit systems anywhere and at any time. From a sustainability point of view, this leads to less ‘routine’ site visits, reducing travelling requirements and the subsequent carbon footprint. It also means that maintenance can become leaner and more fit for purpose, saving money, time and unnecessary interventions.
Sustainable savings From reducing water wastage, to helping HVAC systems meet their design life and efficiency target, real-time monitoring is a key step in sustainability. And, the total cost of ownership will be minimised – by preventing repairs, breakdown and downtime and also through reduced sampling, consultant and maintenance requirements. Choosing real-time monitoring to safeguard your expensive HVAC assets is a very worthwhile investment.
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www.humiditysolutions.c
o.uk January 2021 31
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