High performance multi-layer insulation membrane
Utilising their experience in developing highly effective multi-foil insulation materials for use in the building and construction industries, YBS Insulation has introduced an easy-to-fit method of reducing heat migration in ductwork systems.
Known as HVAC-WRAP this high performance insulation acts by trapping air within its structure creating low emissivity air pockets which enhance its total thermal capabilities.
A reflective aluminium foil is bonded to both sides which are coated to provide corrosion resistance, durability and waterproofing. Manufactured in the UK
and meeting the requirements of BS EN ISO 9002, this lightweight, easy-to-handle, versatile insulation has been rigorously tested and holds BBA Agrément Certificate No. 08/4565.
Installation is achieved by the simple process of stretching HVAC-WRAP over standard rectangular metallic ductwork utilising specially designed spacers on each corner and sealing with self-adhesive aluminium tape. This can help reduce air leakage from the duct and, when used with 2-layers, can achieve a thermal resistance of up to 2.245 m2
KW.
CFC and HCFE free this 7mm thick double bubble membrane is not affected
Samsung Neo Forte air conditioning units in a DVM VRF system have been chosen for one of the UK’s top dental practices, on London’s famous Harley Street, to provide a healthy and comfortable environment for patients and staff. The building’s historic nature, as well as prestigious location, presented an interesting challenge for engineers involved in the first floor air conditioning upgrade, which formed
Dental practice makes appointment with Samsung
part of a full building refurbishment. In order to gain access to the roof where the VRF outdoor unit was to be positioned, contactors—Cascade systems of Harlow in Essex—needed to negotiate the unit through an 800mm x 1200mm second floor window. This required the unit to be expertly stripped down to its bare components before being rebuilt and commissioned where it wouldn’t be visible from the road, meaning no impact on the street’s splendid roofline.
Supplied by Logicool Air Conditioning, based in Swadlincote, Derbyshire, the Samsung DVM (Digital Variable Multi) Plus III solution drives 11 refined and stylish indoor wall mounted Neo Forte units, which complement the practice’s own first class facilities and reputation. Karl Richardson, Managing Director of Logicool Air Conditioning, explained that efficiency ratings were a significant aspect of specification. “As the Samsung DVM VRF system can operate at maximum efficiency at just 5% load it was the ideal choice for the practice, which required a more energy efficient and effective solution to replace their outdated system. And of course the outdoor unit had to be ultra-compact for us to get in into position.”
The Neo Forte models are available to suit Samsung’s RAC single split systems and its FJM multi splits, as well as the DVM Plus III (VRF) systems. Ranging from 2.2kW – 6.8kW of cooling and 2.5kW – 7kW of heating, and offering a compact and contemporary design, the units are suitable for practically any modern domestic or residential installation.
www.samsungac.co.uk
Building & Facilities Management – September 2010
by moisture or humidity and is available in 25 and 50m rolls in widths of 150, 300, 450 and 600mm. Tel: 0844 99 10044
www.ybsinsulation.com
ABB BACnet drives control both air quality and propulsion unit testing
A heating, ventilation and air conditioning (HVAC) system is offering ABB a double advantage by controlling the air quality within one of its factories in Finland while simultaneously being used during the functional testing of its products. ABB’s Vuosaari factory near Helsinki produces Azipod®—a podded, electrically driven marine propulsion unit, mainly used on cruise liners and other special-purpose ships.
BACnet enabled ABB low voltage AC drives
within the HVAC system are providing the functionality needed to achieve this dual application. Thirty ABB standard drives for HVAC control the pumps and fans in the HVAC system. As well as monitoring heating and air conditioning throughout the site, the building automation system monitors the flow and temperature of air used by air-cooled Azipod propulsion units undergoing testing. The BACnet system is divided into three sub-networks: one for the office block with five air handling units; one for the factory unit with three air handling units; and one air handling unit dedicated to supplying cooling air for the product testing. A sub- network can have a maximum of 31 drives and a router connected in a bus network, although in this case, no sub-network has more than 12 drives.
Because all data is available all the time on BACnet, a HVAC system based on it is extremely easy to expand, modify and maintain. This allows a workstation to be simply re-configured to add the new functionality. There is no need to change any network or device configuration when adding new reports or alarms to the operator workstation, eliminating the need to re-program any devices or install any new wiring. A new range of smaller Azipod® units has entered production. Here, water cooling will be used during testing, so the HVAC system has been modified to allow it to monitor cooling water temperature. The new testing station was added to the system without disturbing the existing automation. Email:
energy@gb.abb.com www.abb.co.uk/energy
energy solutions 15
HVRAC
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