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HUMIDITY CONTROL


is that they generally have a lower moisture removal capacity. As to applications, refrigeration-based dehumidifi ers often employ a cooling coil and an AHU on top of a block of fl ats or an offi ce block where the humidity has to be kept at, let’s say, levels around 50% plus or minus 10% relative humidity (RH).


Desiccant type dehumidifi ers are often used


in a process-based environment such as a manufacturing or storage facility. They can operate to tighter tolerances – you could comfortably achieve plus or minus 3% RH. They can prolong equipment life, improve effi ciencies, or create lower dew points.


ACR-SEP17-HERONHILL.qxp_Layout 1 09/08/2017 12:28 Page 1


How does dehumidifi cation contribute to lean purchasing practices, sustainability, and stock management? In terms of lean purchasing, dehumidifi cation helps to maintain the quality and longevity of goods and materials. Controlling humidity levels in storage areas can prevent the moisture damage, mould, and mildew that can lead to deterioration of product. From a purchasing standpoint, this


means you can reduce the need for frequent replacement or disposal of damaged goods which helps to optimise purchasing practices and minimise waste. Dehumidifi cation contributes to sustainability


by reducing energy consumption. By removing moisture from the air, dehumidifi ers can create a more effi cient environment for cooling or heating, providing signifi cant energy savings for HVAC systems which don’t have to work so hard to maintain temperature levels. Finally, dehumidifi cation helps in eff ective stock management because, by controlling humidity, you can prevent inventory damage to moisture-sensitive items (such as in the food or pharmaceuticals sectors), avoid potential fi nancial losses, and maintain accurate stock levels.


Can you describe the interplay between HVAC, AHUs, and dehumidifi cation, and how the best balance can be achieved? To determine the best balance among diff erent HVAC components, you must factor in climate, building size, occupancy, and specifi c requirements of the building space.


Essentially, precise specifi cation means ensuring that the HVAC system including AHUs and dehumidifi ers are appropriately sized for the building’s load and occupancy. Oversized or undersized systems can lead to ineffi ciencies and comfort problems. Secondly, implementing integrated controls


to allow the HVAC system and dehumidifi ers to communicate and work in sync ensures effi cient operation, and prevents confl icts between temperature and humidity control. It also pays to looking at dividing the building into zones using separate AHUs and dehumidifi ers for each zone, so you can get more targeted control focusing on areas with specifi c humidity or temperature requirements. And carefully examine the controls element; consider fi tting humidity sensors within the building’s rooms as well as within the ductwork. Regular maintenance is also important to


ensure the HVAC system and dehumidifi ers are functioning at their optimal level.


www.klima-therm.co.uk


REFRIGERANTS


For all your humidification requirements Download the ACR News app today


www.acr-news.com • September 2023 33


www.heronhill.co.uk


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