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BSEE


Brunel University London’s Hamilton Centre is home to a host of entertainment facilies, including bars, restaurants, and the student union. With the link between good indoor air quality (IAQ) and concentraon levels becoming increasingly well established, opmising the building’s venlaon system was a top priority.


ocated in the heart of Middlesex, Brunel University London is home to over 12,000 students across a wide range of disciplines. It was founded in 1966, and has grown to become one of the top universities in the world, regularly ranking in the top 400. As a campus university, there are a range of facilities located on site for students to enjoy, from shops and bars, through to gyms and nightclubs. The Hamilton Centre houses much of the entertainment for students, as well as the student union. It is a place where large numbers of people frequently meet, congregate, and spend their spare time, which makes it crucial that it is as comfortable and welcoming as possible. There is also evidence that poor IAQ has a negative effect on the attention span of students, leading to a noticeable drop in concentration when CO2 levels are high. Combined with longer- term effects such as headaches, coughs and respiratory problems, it is crucial that education facilities make a conscious effort to ventilate as effectively as possible.


L Not so clever


A contra-rotating fan on the roof of the Hamilton Centre, which was directly responsible for ventilating a popular pizza bar in the building, was failing. It had been over specified, which meant it was oversized and using an unnecessary amount of energy.


Marcus Sawkins, Co-Founder and managing director of GFMS Services Limited, comments: “Although it is important to maximise the


performance of a ventilation system, this must be balanced with the associated energy expenditure. “The existing fan was incurring high running costs and CO2 emissions, neither of which are desirable for an expanding university. Plus, the voltage required to operate the fan was unnecessarily large, which posed a problem as the controls are located in a busy kitchen.”


The decision was made to replace the fan with a more energy efficient model, but it was crucial that performance was not sacrificed. Owing to its reduced running costs, EC motor, and intuitive controls, Elta Fans’ Revolution SLC EC presented itself as the ideal fan for the application.


Show your working


The transition from an AC motor to a low energy EC motor negates the need for a mains powered speed controller. As David Millward, Product Manager at Elta Group explains, this has a two- pronged effect:


“The EC motor helps to reduce energy bills by up to 20%, which is crucial for meeting environmental targets as well as lowering the total cost of ownership. It is also a more straightforward installation, allowing contractors to complete projects quicker and with less chance of complications.”


ENERGY MANAGEMENT University turns to revolutionary fan


32 BUILDING SERVICES & ENVIRONMENTAL ENGINEER NOVEMBER 2020


Read the latest at: www.bsee.co.uk


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