AIR H
less than ethical approach often pays off – at policed across the building services sector, this lower price to the client. As standards are rarely the new standards in order to be able to quote a commercial building sector are simply ignoring i s growing evidence that some suppliers to the
least for the supplier. Legacy
However, the outcome is that building owners and occupiers are left with systems that are not fit
legacy of poor performance – and they pay more for purpose, are not legally compliant and leave a
airborne pollutants – but it does not need to be systems will also leave occupants vulnerable to As well as missing energy targets, these in the long-run too.
price What is required however is the rigorous without having to over-specify on size and meets the energy efficiency and IAQ criteria It is perfectly possible to design a system that t his way.
should establish efficiency based on 65% of system then the ErP states that an engineer F or example, if it is a variable air volume (VAV) including properly defining the type of system. a pplication of good, basic engineering principles, price. What is required, however, is the rigorous
design duty – rather than the all too common practice of simply basing all the calculations on 100% duty with 10% added ‘just in case’. That unfortunate habit has left a legacy of housands of over-sized systems that can never meet their energy efficiency targets because they are too big. They also fail more quickly because th
th
hey cost the client more than if a properly sized ystem had been specified in the first place. Daikin Applied looks to meet the client’s requirements by accurately sizing and using
technical innovations such as EC fans in order to minimise energy consumption.
ations such as EC fans in order to y consumption.
hey are continually cycling on and off rather than operating for longer periods at lower duty – and th sy
Fan power is also specifically referenced in the revised ErP legislation, and is another design aspect that should not be ignored by specifiers. It also calls for multiple fan systems to build in redundancy, as well as improving efficiency. The bonus for engineers is that EC fans are more compact than DC equivalents, which means they can help to reduce the size of the system and meet new energy targets, while at the same time making sure building occupants are protected from air pollution.
also specifically referenced in legislation, and is another design uld not be ignored by specifiers. multiple fan systems to build in well as improving efficiency. r engineers is that EC fans are than DC equivalents, which means o reduce the size of the system energy targets, while at the ing sure building occupants are air pollution.
HANDLING UNITS
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nd air handling units (AHU’s). ffer EC plug fan upgr ades for leader s in energy efficient
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• Save on labour and maintenance cos • Reduce runn
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s including Heathrow Airpor t, AHU upgrades sa ve
ters.com/ahufanupgrades energy per year!
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earings to grease elts to change
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our and maintenance costs ning costs
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