BSEEINSTALLATION NEWS
When owner Kained Holdings launched its new top flight steak restaurant Porter & Rye in Glasgow, it chose a natural, rustic look for the décor. But an influx of cold air every time the door opened was definitely not on the menu. Airbloc was called in to provide an HVAC solution that would keep draughts at bay and ensure a comfortable environment for diners.
orter & Rye specialises in quality dry-aged meats and classic mixed drinks. The restaurant occupies the ground floor of an elegant Georgian building on Argyle Street, close to the bustling West End, and incorporates a mezzanine. It is in an exposed location, with cold air channelled along the street from Kelvin Grove Park directly towards the entrance.
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Airbloc, which is part of Nortek Global HVAC, supplied an air curtain from its AC Chassis range. The electrically heated CMS1000HE12-SM unit delivers a powerful downflow of heated air to create comfortable conditions for staff and customers. It is a highly energy-efficient HVAC solution, typically reducing, heat loss around an open door by up to 80%. The CMS air curtain is suitable for a variety of commercial and retail applications and is intended for discreet positioning in suspended ceilings or doorway bulkheads. However, Kained Holdings – which also operates a Porter & Rye restaurant in Edinburgh and Lebowski’s bar in Glasgow – deliberately chose to have the unit in full view.
The owners wanted an ‘industrial look’ to complement the overall décor, which makes a feature of the exposed stone and ironwork. Airbloc therefore supplied the unit with an unpainted outlet and grille. This not only created the aesthetic effect required, but also ensured that the flush, adjustable grille was a perfect
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match for the restaurant’s frameless glass door.
Mo Clark, Estates Director at Kained Holdings, said: "A warm and welcoming environment is vital if we are to attract and retain customers, so we had to find a way to counteract the cold winds that we experience in the Finneston area of Glasgow.
"The air curtain has solved the problem. We can't stop the wind from blowing but, thanks to Airbloc's solution, there's no noticeable impact on the comfort of diners when customers enter or leave the restaurant. The unit is economical to run in its own right, and the building's main heating system doesn't have to work extra hard, which would result in an increase in our energy bills, to maintain the set temperature." The layout of the steelwork and structure of the doorway meant that the air curtain had to be mounted at high level. This did not pose any difficulties in terms of installation, nor did it have an adverse impact on the effectiveness of the system because the CMS1000HE12-SM unit is suitable for installation at a height of four metres.
For improved energy
management, the air curtain was installed in conjunction with Airbloc’s class-leading SmartElec controller. Incorporating MODBUS protocol and digital sensors, the system allows closer control, enabling end users to save 40%-65% on their energy costs.
www.ambirad.co.uk/en/uk/home
Hoval boilers fitted with Riello dual fuel low NOx burners have been selected by Skanska for the new Papworth Hospital in Cambridgeshire. The precise matching of boilers and burners will ensure optimum energy efficiency with low NOx emissions.
uAirbloc supplied an air curtain from its AC Chassis range for the entrance at Porter & Rye. Installation summary:
uNon-typical application of the CMS unit uUnit deliberately chosen to create a visual impact uMounted at 4m above the door
Technical summary:
uOne CMS1000HE12-SM uA cost-effective HVAC solution, creating an effective barrier to draughts uHeat loss around open doors is reduced by up to 80% uCustomised unpainted finish complements the restaurant’s décor uPowerful unit ideally suited to high-level mounting at up to 4m uSupplied with the SmartElec controller for improved energy management
Matched heating to match stringent environmental criteria
The new 310-bed Papworth Hospital is being constructed on the Cambridge Biomedical campus, using Building Information Modelling (BIM) techniques, and is due for completion in 2018. With a comprehensive range of cutting- edge medical facilities it will replace the existing, and outdated, Papworth Hospital. A key element of being specified for the project was the ability of Hoval and Riello to supply BIM-compatible product information for incorporation into the model. Two Hoval Max-3 2.2MW boilers fitted with Riello RLS300/EV burners will be used as the lead boilers to provide space heating and hot water to the new 40,000sq m hospital, backed up by a 530kW Max-3 boiler with RS68/EV burner.
In addition, Hoval will supply two 1,100 kg/hr TDHU steam boilers, both using Riello RLS120/EV burners.
The boiler/burner combinations specified for
the project will deliver optimum performance and energy efficiency with low NOx emissions to ensure low cost of ownership and minimal environmental impact for the hospital. The Riello RLS300 EV and RLS120 EV burners are low NOx dual fuel, while the RS68 EV is gas only. All of the burners incorporate inverter driven fan motors and full electronic control, with an interface that provides real time information for the end user. Hoval Max-3 boilers have a three-pass design to deliver net efficiencies to 95.2%, The TDHU steam boiler also uses a three-pass design, combined with a big flame tube and a large water capacity to ensure long burner run times for enhanced efficiency.
ww.rielloburners.co.uk www.hoval.co.uk
uPrecise matching of boilers and burners will ensure optimum energy efficiency with low NOx emissions at the new Papworth Hospital.
New EN standards for thermal outputs from ceiling panels
A revised EN standard, EN 14037-5, was introduced last November with the aim of changing how thermal output is measured for closed ceiling panels (also known as grids or lay-ins). This standard is important because thermal output data is publicised by manufacturers as a primary indicator of product performance and also influences buying decisions. However, this new standard is not always being honoured and sometimes, results from old standards are being compared with those from the new, meaning that buying decisions are being made based on inaccurate comparisons.
uWith EN 14037‐5, the active surface is determined by calculating active length multiplied by active width.
The new standard – developed by the EMCP (European Manufacturers of Ceiling Panels) – measures thermal output in units of W/m². The previous standard, EN 14037-2 (introduced in February 2003) measures output as W/m. With EN 14037-5, the active surface is determined by calculating active length multiplied by active width. The active length takes into consideration the pipes and heat
30 BUILDING SERVICES & ENVIRONMENTAL ENGINEER AUGUST 2017
exchanger strip, whichever is longer. The active width is derived by multiplying the number of pipes by the spacing between each of the pipes. This differs from EN 14037-2, as for each panel there is a specific heat output in W/m, based on the dimensions of the ceiling panel. It is vital that specifiers are aware of the new EN standard, as they – along with manufacturers – are responsible for adhering to it. In turn, all manufacturers should comply with the new standard when making public claims about the thermal outputs of their ceiling panels to ensure that specifiers are presented with fair and accurate comparisons, enabling them to make decisions based on data which is up to date and aligned. Adopting the new standard will help ensure a building achieves its thermal design conditions.
To find out more visit:
www.zehnder.co.uk/ en-industry-standards
VISIT OUR WEBSITE:
www.bsee.co.uk
Christian Schweyer, Technical & Sales Support, Heating and Cooling Ceiling Systems, Zehnder Group, explains what you need to know.
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