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    Housing

    Buildings focus: New air scrubber reduces ammonia

    Chloe RyanBy Chloe RyanJuly 27, 20184 Mins Read
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    A first-of-its-kind air scrubber and climate control system has been installed at H Timmis, a poultry farm in Shropshire, with the aim of reducing ammonia and improving bird welfare and productivity.

    VentMax is a 4-in-1 air scrubber, heating, cooling and ventilation system, manufactured by IPT Technology.  It was installed in two 50,000 bird broiler sheds in October 2017 and is currently operating through its fourth bird crop cycle.  The units are installed externally to the building and filter all air that leaves the sheds, removing dust particles. The technology can reduce ammonia and odour emissions by up to 90%, a feature that proved instrumental in helping H Timmis gain planning consent for expansion from the Environment Agency.

    But the air scrubbing system is only part of VentMax’s functionality. As well as cleaning the outgoing air, the units also filter the incoming air and provide controlled ventilation and temperatures throughout the sheds.  Already they are starting to prove their ability to deliver superior climate control functionality, leading to improved air quality and better internal conditions.

    “VentMax units combine advanced ventilation technology with intelligent controls to manage air pressure, air movement and temperature,” says John Gill from IPT Technology. “They are also quieter than conventional systems. Bring together all these features and the result is a calm and controlled environment for optimum bird comfort and productivity”.

    The VentMax units are smart and use programmed algorithms to calculate the required shed temperature and sensitive measurement technology to quickly adapt to changes in outdoor conditions. 

    “The heat demand in our broiler sheds always starts high and gradually falls depending on the stage of the bird growth cycle,” says farm owner Rob Timmis. “This winter, despite challenging weather conditions, VentMax has ensured a constant, regulated indoor environment with temperature drifts no higher than +/- 0.5 degrees”.

    The VentMax units work in tandem with a ground source heat pump system which provides a sustainable source of heating and cooling. “VentMax utilises passive and active cooling to maintain cooler temperatures in hot weather, reducing the need for disruptive tunnel ventilation systems and removing the risk of wind chill,” adds Gill. “By improving the ventilation of a shed, you can prevent falling cold air from affecting the quality of your litter, thus removing the burden and cost of spreading additional bedding and reducing the risk of hock burn.”

    At H Timmis Farm the sheds also have the added benefit of underfloor cooling which is particularly effective at taking heat away, because the heat-generating birds are close to the ground. Removing only a few degrees of heat helps reduce the microbial activity within the litter, and, consequently reduces ammonia and odour.  

    “Bird welfare is very important to us and we constantly strive to optimise the internal conditions of our units,” says Timmins. “We’re very impressed with the level of control we have over the temperature and humidity in our sheds with VentMax. We’re already seeing improvements in the internal environment compared to our other sheds and there’s potential to optimise our crop performance further.”

    With energy efficiency high on many farmers’ agendas, VentMax offers the added benefit of acting as a heat recovery system: recovering up to 70% of waste heat leaving the sheds and using it to heat the incoming air.  “It seemed crazy to us that all the excess heat from poultry sheds was being wasted into the atmosphere, so we decided to incorporate a heat recovery system into our design to improve energy efficiency,” says Gill. “This means recovered heat gets used first, before utilising the ground source heat pumps, helping to keep energy costs to a minimum.”

    IPT Technology designs, manufactures and installs innovative heating and cooling plant. The product range continues to expand, with the GeoCube, VentMax and OptiRad systems all designed for the agricultural industry.

     

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    Previous ArticleBuildings focus: Interview with Paul Clarke, director Clarke Group
    Next Article How to combat heat stress in birds
    Chloe Ryan

    Editor of Poultry Business, Chloe has spent the past decade writing about the food industry from farming, through manufacturing, retail and foodservice. When not working, dog walking and reading biographies are her favourite hobbies.

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