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Upgraded hospital BMS on track for an 18‐month ROI
Shopping centre reaps energy and carbon savings with voltage optimisation system
he Brewery shopping and leisure centre in Romford is benefiting from energy savings and added resilience against an ever more unstable grid supply, as a result of voltage optimisation technology from e-fficient Energy. Located at the former Star Brewery, The Brewery opened in 2001 and is one of the three main shopping centres in Romford, housing cafes, restaurants, shops, a Vue Cinema and Virgin Active Gym.
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The Brewery considers energy reduction a top priority, not only from a
cost-efficiency perspective, but also to reduce its carbon footprint. An e-fficient Energy audit identified that the shopping centre would benefit from Voltage Optimisation and Regulation (eVO+R) technology. The company installed a 250 KVA eVO+R unit to the main supply for the shopping centre and a 150 KVA eVO+R unit to the car park supply, closely regulating the site voltage from highs of 246V down to 220V.
This provides plant and equipment with optimal and stabilised voltage, delivering energy saving and improved
equipment life expectancy, by consistently operating electrical loads at their design voltage.
Operations Manager Andrew Bonnici said: “Installation was painless and the benefits instantaneous.”
As a result of the installation, savings of almost 13% have been achieved, and The Brewery is set to achieve a return on investment (ROI) within two to three years. The site is also benefiting from a consistent electricity supply due to regulated 220V output.
http://e-fficientenergy.co.uk/
Big Foot Systems meets the challenge at Coca‐Cola GB
G Energy Solutions played an integral role in upgrading the BMS (building management system) at Royal United Hospitals Bath. Based on the installation of Panasonic PLCs (programmable logic controllers) and newly designed control panels, Estates Manager Brian Gubb estimates that payback will be as little as 18 months due to the impressive energy savings being delivered. The facility now plans to roll out the solution to more areas.
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The site’s previous BMS controlled approximately 300 items of equipment, including air handling units, generators, heating systems and lighting systems. The system was based upon a proprietary BMS top end that allowed users to control and change set points.
However, the top end software was expensive to maintain, while users needed many months of training. The outstations were also provided by the same supplier and only their staff could work on the equipment. Licensing was another issue. Not only is licensing expensive but, once tied in with a BMS provider, there is an obligation to use their equipment – at often uncompetitive prices.
To address the situation, Mr Gubb – a trained SCADA development engineer – created a SCADA management system as the overarching framework for the BMS. The system features Panasonic PLC outstation equipment that communicates back to the servers via software interfaces supplied by OPC Systems, a specialist in SCADA applications. The system allows data transfer from the BMS to SCADA and vice versa, allowing staff and technicians to control and monitor plant from any of the 24” touch-screens on site. The new control panels were built and commissioned by BG Energy Solutions, and although the hospital will not know the precise savings until six to eight months of operation, Mr Gubb’s calculations suggest that each one will save £5,000 a year.
“I selected BG because they had successfully completed a previous large project at the hospital to re-furnish the whole energy centre controls in our biggest boiler houses – and did an excellent job,” he says. “BG is now our preferred supplier and, if required, their engineers can log in remotely to rectify any issues.”
www.bgenergysolutions.co.uk
Eco Toms project proves fruitful for underfloor heating firm
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ig Foot Systems has supplied a custom Safe Access solution and HD Beams rooftop plant support to Coca-Cola Enterprises’ Wakefield factory.
Coca-Cola Enterprises GB wanted to increase production hall cooling ventilation capacity, looking to add two new air handling units to the existing lightweight standing seam roof. The project also required minimal disruption to operations and to reduce the risk of any leaks above a facility capable of producing 6,000 cans and up to 2,200 bottles of soft drink every minute.
Having previously worked with Big Foot Systems, the Coca-Cola Enterprises’ project consultant suggested the possibility of using Big Foot to provide a plant and service support strategy, eliminating the need
to penetrate the roof. The lightweight roof construction was a challenge that Big Foot Solutions could easily meet.
Big Foot’s technical team worked with project contractor HE Barnes for many months. Big Foot’s technical team proposed several solutions, leading to the use of their HD Beam product to span the main rafters and the purlins, while taking the load back to the main rafters. The solution also provided safe access for maintenance of the newly installed AHUs.
The engineered design and technical support by Big Foot allowed HE Barnes to provide a detailed lifting plan and method statement to Coca-Cola Enterprises’ Health and Safety team. Big Foot’s technicians were also on site for the frame erection and AHU crane lift to the roof, utilising a 250 tonne crane
10 BUILDING SERVICES & ENVIRONMENTAL ENGINEER APRIL 2016
with a 60-metre reach. The installation was carried out seamlessly within five hours of the crane being set up. An HD Beam is a non-penetrative support frame for chillers, AHUs, packaged plant, generators, pipes and steels. It is a robust but flexible solution where space may be limited, or there is a requirement to position directly over existing structural roof steels. Weight is then evenly distributed across the specified quantity of HD Beams. It is also height adjustable to maintain a level system on roof falls up to 5 degrees.
The Big Foot Safe Access range is designed to allow a secure route for service engineers and other trades to gain access to plant and for managing the flow of other personnel.
www.bigfootsupport.com
The Eco Toms are grown with the help of an anaerobic digestion process that uses waste vegetable matter which, when it decomposes, produces methane gas. The methane is then used to fire micro turbines that generate electricity to heat the tomato growing glasshouses.
All the waste CO2 generated from the process is fed back into the glasshouses, which gets absorbed by the plants and in turn helps the fruit ripen quicker so more tomatoes are produced, genius!
Giacomini’s underfloor heating is used in the concrete anaerobic digester tanks to heat the organic material, causing anaerobic fermentation. This is where microorganisms break down the organic matter of the waste vegetables, producing biogas, a mixture of biomethane CH4 (65-70%) and CO2 (30-35%) and small amounts of other gases. The biogas is collected in gas storage tanks and utilized in growing the tomatoes.
The system provides a recirculation of nutrients into agriculture and contributes to wider environmental protection and preservation, as it is a carbon-neutral process, unlike using fossil fuels, and further supports Giacomini’s stance on efficiency.
Said Giacomini: “Traditionally our underfloor heating is installed in domestic or commercial settings. However, this is now the third time we’ve worked on a biofuel project of this nature. We’re becoming quite the expert tomato growers now!”
www.giacomini.co.uk VISIT OUR WEBSITE:
www.bsee.co.uk
nderfloor heating specialist, Giacomini, was chosen to assist Hertfordshire tomato growers, Guy and Wright, in the production of its Eco Tom
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