www.heatingandventilating.net


straightforward, assuming the psychrometrics of the system are suitable. For example, evaporative units are often added downstream of the air conditioning components within the AHU (see diagram below). In such cases, the humidifi ers can be supplied


fl at-packed or pre-assembled for fast and simple installation, with the ability to confi gure the system for easy maintenance from either side of the air handling units (AHUs). Similarly, when new AHUs are being installed, the evaporative humidifi er can be installed during the factory assembly of the AHUs


Improving ahu energy effi ciency


In either case, the detail of the humidifi er design is of great importance in ensuring optimum performance. For example, if the media matrix of the humidifi er does not cover the full width of the AHU, blanking plates will be required, and this will increase pressure drops and associated energy consumption by the fans. Customising the matrix to the width of the AHU is therefore an obvious measure. Air velocity through the matrix is also an important


consideration. If this rises above 3.5m/s, a droplet separator will be required to prevent water droplets from coming off the face of the matrix. This again has the potential to increase both costs and pressure drop, but the correct sizing of the humidifi er helps to address this issue.


The result of these factors is that when the


humidifi cation system is tailored to the specifi c dimensions and confi guration of the AHUs, pressure drops are reduced so that smaller and cheaper fans can be used, or inverter-controlled fans will run at lower speeds and reduce energy consumption.


Evaporative humidifi cation technology


Modern evaporative humidifi ers also take advantage of the latest control technologies to deliver a range of features that certainly wouldn’t be available on a town square fountain. For example, microprocessor control allows fi eld confi guration, master/slave confi guration of multiple modules, on/off or modulating


performance, time control and optional links to a building management system. Evaporative humidifi cation and adiabatic cooling


are based on ancient principles, enhanced by clever design, innovative manufacture and modern materials to create a highly energy-effi cient and cost-eff ective way of introducing moisture into the air. As such, they deliver signifi cant cost savings with a fast return on investment for a wide range of applications that require cooling as well as humidifi cation. John Barker is also the chair of the Humidity


Control Group, a trade group within the Federation of Environmental Trade Associations which raises awareness and understanding of the importance of humidity in commercial, industrial and domestic environments.


HUMIDITY CONTROL


UPGRADE & SAVE WITH THE BRITISH BUILT VAPAC VE ELECTRODE BOILER -+-


We’re celebrating British manufacturing by offering an additional £200 off when you upcycle any existing humidifier and choose the Vapac VE Electrode Boiler. The offer is valid on new quotes delivered by 30 Sept 2025 — quote VAPAC200 when enquiring with our team.


HUMIDITY CONTROL MADE EASY


SUPPORTING BRITISH MANUFACTURING


-+-


WHY CHOOSE US -+-


• Made in the UK - fast lead times, with units and spares in stock • +/- 5% relative humidity control - creating a stable environment • We’re on hand to help - With any design or specification queries • Trusted expertise - Our experts have decades of experience in a variety of industries


• UK wide technical support - We offer UK wide planned maintenance and free technical support over the phone


“Humidity Solutions has very quick lead times, with most of their


products being in stock items and the reliability of their products is fantastic. The staff are always incredibly helpful, knowledgeable and eager to please with a very ‘can do’ attitude. ”


CONTACT OUR EXPERTS E: info@humiditysolutions.co.uk W: humiditysolutions.co.uk Humidity Solutions hp BSEE Jun25.indd 1 Humidity Solutions hp HVR Jul25.indd 1 DOWNLOAD THE HVR APP NOW T: +44 (0)1372 571 200 9/5/25 11:48 July 2025 25 26/6/25 12:01


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