CHILLED BEAMS AND FAN COILS
What are the benefits of using a waterborne climate system on your project?
By Ajeeb Mohammed, product specialist at Swegon. C
limate systems fulfil same purpose of adapting ventilation and air conditioning to varying levels of activity in our premises. In general, it is possible to
achieve higher energy savings, more cost efficiency and a better indoor climate with a more advanced system. The need to cut carbon emissions without compromising on comfort conditions and occupant health & well-being has presented our sector with considerable technical challenges.
Smaller ventilation ducts Water is a very efficient energy carrier, using it as a medium for carrying energy for cooling/heating means the size of ventilation ducts are significantly smaller, the ventilation rate is maintained at a lower rate to meet the air quality and humidity requirements. Furthermore as the ventilation doesn’t need to be at a lower temperature the ventilation ducts don’t require as much insulation, which means that
you can save even more space and money on the duct system. Saving a couple of decimetres in building height on each floor can allow the designer to fit an extra floor within the framework of the building permit, increase the ceiling height in the offices, or just save on construction costs. More space on each floor provides greater rental income, which can very quickly weigh up against a potentially higher initial cost for a water-based climate system.
Individual comfort control In recent times it is typical to be able to set exactly what temperature you want in a car. Even if you do not get the exact set temperature, the feeling of having control over the temperature is important. In most cars, the temperature on the driver's side and the passenger side can also be regulated independently. This is because what is perceived as the best possible comfort is individual. By installing a climate system based on comfort modules or active cooling beams, it is possible to regulate the temperature individually, within a larger temperature range than with a system entirely based on airborne cooling. A relatively large amount of air is set in motion when the supply air induces a secondary flow through a chilled beam, but by utilising ceilings and walls to distribute the air in the room, high velocity air in the occupied zone can be reduced. This provides the conditions for creating a draft-free climate. Since no fan is used to circulate the room air through the heat exchanger in the chilled beams, the sound level can also be kept to a minimum.
Studies show that people who work in an environment with poor thermal comfort have poorer performance ("Ten questions concerning thermal and indoor air quality effects on the performance of office work and schoolwork" by David P Wyon). A waterborne climate system with chilled beams or comfort modules helps to meet future energy requirements and provides low operating costs without having to neglect thermal comfort.
26 February 2023 •
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