IN FOCUS


New efficient HVAC system for Milton Keynes warehouse


D


ravo has supplied an energy efficient HVAC system for a leading UK retail giant’s distribution centre.


The distribution centre, located in Milton Keynes is a state-of-the-art facility and is one of the UK’s largest, covering a 45 acres site – the size of 12 football pitches. The facility supplies a rapidly expanding network of supermarkets and convenience stores across the UK. The 940,000ft2 building needed a suitable energy efficient HVAC system to match and Dravo were able to provide a solution to meet the client’s specific heating requirements for the low bay area and cooling for the temperature controlled zones by supplying 8 x AHUs; GH indirect gas fired appliances complete with modulating low NOx burners and high velocity ductwork distribution system. Dravo’s range of indirect gas-fired units provide both fresh and warm air in the building. Indirect fired


units work on a patented air recirculation system which supplies the amount of fresh air required to meet the changing requirements of the building, while maintaining a constant supply of fresh air into the burner. The bespoke heating, ventilation and cooling system solutions provide reliable, consistent and comfortable temperature inside all of the new distribution centre. Benefits of AHUs


• Up to 109% efficiency • Low NOx <30ppm • • • • •


High pressure of up to 2500pa


Extruded aluminium or galvanised painted pentapost frame construction Double skinned insulated panels of 50mm thickness Outer skin manufactured from plastisol


High-efficiency, direct-coupled plug fan mounted on its own base frame and isolated from the structure via antivibration mounts


The nature of the high pressure fans provide a large available external static pressure, allowing the air to be distributed at high velocity through the systems, hence minimising the size of the distribution ductwork. The ductwork is all spiral wound galvanised steel, which is light, quick to install, and far cheaper than tailor made rectangular ducts.


www.combat.co.uk www.snickersworkwear.co.uk


Hoval’s new TopVent® range for undisturbed hall operation


Flow into control from the Energy Centre to Terminal Units


H


oval has launched a new range of TopVent® decentralised roof ventilation units, specifically designed to meet


the needs of modern logistics operations, production halls and retail ‘sheds’. Building on the popularity of the tried-and-tested TopVent units, this new range is especially suitable for applications where undisturbed operation within the building is of paramount importance. To that end, the new units are installed completely from the roof onto prefabricated roof sockets and prepared roof ducts. This means that the only work required in the building is hydraulic and electrical connections. Moreover, all serviceable components can also be accessed from the roof, so that regular maintenance and service work can be carried out without disturbance to the activities below. Thus, maintenance is easier to schedule and downtime is avoided. The six versions offer circulating air or supply air heating/cooling, each with two output sizes, thereby covering all requirements. Different device types can be combined with each other, thereby extending Hoval’s well established zone-based control concept. The inherent flexibility of the units enables even further customisation to meet project requirements.


For example, through optimised control functions, outside air can be used for free heating and cooling when external temperature conditions allow. A further benefit is that if the layout of the space below is changed it is very straightforward to reconfigure the ventilation units to ensure optimum performance is maintained. TopVent decentralised systems ensure that each space – or each zone within a large space – can


Getting the most out of smart HVAC solutions comes down to getting the system design right.


At Frese, we can help you control flow & temperature from the Energy Centre all the way to Terminal Units.


be controlled independently of other units in spaces/zones. In this way, different activities, variable occupancy patterns and changes in usage are all addressed. The ability to adjust ventilation rates to the actual demand within each space (demand-controlled ventilation) minimises running costs without compromising on comfort. Hoval TopVent® units are also designed to protect people below from draughts by using air injectors


that distribute supply air at different temperatures. The air distribution pattern can be changed automatically and is infinitely variably between vertical and horizontal. Decentralised ventilation units are becoming increasingly popular because of the advantages they


offer over traditional ductwork-based system – in term of capital and lifecycle costs, energy efficiency and flexibility. With the launch of these new TopVent® units, building operators now have even more choice in maintaining comfortable conditions for staff and optimum conditions for stock and machinery.


Take control at Frese.eu Read the latest at: www.bsee.co.uk www.hoval.co.uk BUILDING SERVICES & ENVIRONMENTAL ENGINEER NOVEMBER 2022 29 S


Advertorial The Snickers Workwear ‘Head to Toe’ Layering system.


uit Up in Layers for consistent comfort and protection in cold and wet weather. You’ll get ‘head to toe’ functionality and protection with Snickers Workwear’s ergonomic base layers, insulating mid layers and weather-protective outer layer clothing.


They not only allow craftsmen and craftswomen to quickly adjust to changing weather conditions, but also give them the opportunity to make sustainable choices about the clothes they wear on site. This winter’s new Jackets, Trousers and Topwear feature high-tech, breathable fabrics that not


only deliver dryness and warmth but also advanced ventilation for controlling body heat - so you can always work effectively, whatever the weather. Advanced fabrics like these are integral to every part of Snickers Workwear’s ‘Head to Toe’ layering system. They combine perfectly with the brand’s hallmarks of best-in-class durability, comfort, ergonomics and sustainability.


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