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AIR HANDLING UNITS


AHU upgrade saves 58% power at Birmingham Airport


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irmingham Airport is the seventh largest airport in the UK, flying around 13 million passengers to over 150 destinations each year. With this level of activity, keeping the airport fully operational is essential. So when one of the air handling units in the terminal check-in area broke down, engineers at Birmingham airport looked to Munters, global leaders in energy efficient air treatment, for a solution.


Munters began the upgrade with an initial site survey to calculate power output and airflow of the existing AHU. “We began by analysing power consumption over the course of seven days,” says David Bennett, service sales manager at Munters. “This enabled us to understand more about how the AHU was running, and choose a solution accordingly.”


Working with ebm-papst, Munters replaced the fans in the AHU with a new FanGrid made up of five high efficiency EC centrifugal plug fans. As well as reducing energy consumption, these fans have reduced maintenance costs for the AHU’s, provided better controllability and reduced noise. The upgrade was carried out with minimal disruption to the operation of the airport. The project has surpassed requirements, with power consumption reducing from 24 kW to 6.4 kW. This is predicted to save the airport over £11,000 per year, with a return on investment of 19 months.


Swegon takes Gold to the next level


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he latest addition to the renowned Swegon Gold air handling unit is the RX/HC – a fully integrated reverse cycle heat pump, developed to complement energy


recovery from the unique thermal wheel and provide tempered fresh air to the ventilation system. The package requires no other boiler, chiller or associated pipework, pumps and


valves etc, so reducing the overall capital cost to a project and reducing risk by all requirements delivered in one smart package.


The unit can be supplied with airflows up to 6.5m3


/s and provide up to 110kW of cooling or up to 40kW of heating.


The heat pump controller is combined with the Gold AHU controls to provide seamless and optimised temperature control and all settings can be viewed or amended from one single HMI.


Developed in Sweden, the range has been fully tested to operate at temperatures down to -20°C so delivering a risk free solution. The defrost control system is self-learning to minimise defrost times and the number of defrost cycles.


Complete with the latest, digital inverter- controlled compressor technology the temperature control is delivered effortlessly and efficiently.


The overall efficient package, with a small footprint, creates the perfect solution for space saving versus traditional AHU and Condensing unit solutions and reduces the size of the refrigeration system and gases, vital in futureproofing against reduced availability of refrigerant gases.


28 April 2018


www.acr-news.com


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