AIR-HANDLING SYSTEMS James Henley
James Henley, Product Development manager, joined Daikin Applied UK in 2007, in what was his first job within the HVAC industry. Starting out as a Contracts engineer focused on delivering project solutions to specification, he then progressed into AHU and chiller sales, before moving on to become the company’s Chiller Product manager, and now its Product Development manager. He said: “Having worked throughout the business, I feel I have a well- rounded approach to the HVAC industry, offering the right solutions to individual applications. Daikin Applied is a world- leading company that delivers cutting-edge HVAC solutions to the market. My role as Product Development manager helps shape the future solutions we can supply to the market to exceed expected demands.”
leave a legacy of poor performance – and they pay more in the long run too. As well as missing energy targets, these systems will also leave occupants vulnerable to airborne pollutants.
Of course it does not need to be this way. It is perfectly possible to design a system that meets the energy efficiency and IAQ criteria without having to over- specify on size and price. What is required, however, is the rigorous application of good, basic engineering principles, including properly defining the type of system.
Accurate sizing is crucial For example, if it is a variable air volume (VAV) system, then the ErP states that an engineer should establish efficiency based
James Henley also heads up the Technical Team; this new team within Daikin Applied UK assists throughout the company with technical assistance, training delivery, and further ‘market scanning’ for future product development needs. He also leads the Daikin Applied UK Marketing Department, bringing together his sales and technical roles, to help produce useful and accurate communications into the market. He added: “Daikin Applied is an exciting place to work; applications we work on range from data centres, to healthcare facilities, to commercial buildings. Our aim is to lead the field in product and system solutions for reduced energy usage, lower costs, and an optimised indoor climate.”
on 65% of 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 thousands of over-sized systems that can never meet their energy efficiency targets, because they are too big. They also fail more quickly – because they are continually cycling on and off, rather than operating for longer periods at lower duty – and they cost the client more than if a properly sized system had been specified in the first place.
At Daikin Applied, we look to meet the client’s requirements by accurately sizing and using technical innovations like EC fans in order to minimise energy consumption. Fan power is also
Ultra Clean Air, Anywhere Small, modular, air handling unit
• Client specified • Ultra Clean (UCV) • Postive pressure • Negative pressure • User/BMS control
• Fixed or Mobile • ULPA15 or HEPA14 • EN14644 Part 3 • Low cost • Low running cost
Web:
www.airsentry.co.uk
• Rental available • British product • Easily deployed
• Increased hourly air changes between AGP
Tel: 01666 818087 October 2020 Health Estate Journal 59
specifically referenced in the revised ErP legislation, so 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 that they can help to reduce the size of the system, and meet new energy targets, while at the same time making sure that building occupants are protected from air pollution. So, it is perfectly possible to provide end-users with a long-term solution that is both cost-effective to operate, and helps to protect the health and wellbeing of occupants. You just need to apply the right design principles.
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