These energy losses have two differenteffects: 1) They increase the energy consumption of the system (the equipmenthas to provide greater air flow to compensate for the losses). 2) The airflow passing through the ductloses its original hygrometric characteristics and reaches the targetareas with a humidity and temperature differentto thatanticipated by the original design.
The effective solution for avoiding such losses is a combination of two measures: 1) Provide the ductnetwork with effective thermal insulation,(for example,either constructed from insulating panel material – such as ISOVER glass wool ductboards,or adding insulation,either as ductwrap or ductliner from ISOVER glass wool or ULTIMATE. 2) Minimize air leakage atducts joints.When glass wool ductboards are used,the joints are tightly sealed, thus minimizing thermal via this route. If metal ducts insulated with mineral wool insulation areplanned,then joints need to be sealed to preventair leakage.
b) Condensation
Another importantcharacteristic,linked to appropriate thermal insulation,is the possibility of condensation in ducts (see chapter 2).
All such projects arerequired to avoid condensation in the ductnetwork,as this invariable leads to mould or bacterial infestation of the system.At this point it should be noted that neither ISOVER mineral wool norULTIMATE new generation mineral wool encourage the developmentor proliferation of moulds.
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