8 News
RSL reinforces relationships
Fanwall technology contributes to carbon savings at John Lewis store in Stratford
RSL was the first wholesaler of Bitzer products in the UK and Ireland having first imported Martin Bitzer compressors and units from the German factory over 50 years ago.
Alex Donaldson, who previously worked in the sales office at Bitzer UK, has joined Refrigeration Spares based at RSL Coventry. Mr Donaldson, who has spent 13 years selling Bitzer products, now has a much wider range of products to offer his customers.
However, since RSL do not stock competing products, Mr Donaldson remains a Bitzer specialist. RSL as a company is still very much a Bitzer specialist and the team recently visited Bitzer’s UK headquarters to keep up to date on the latest Ecoline models of semi-hermetic reciprocating compressors. RSL now has
considerable stocks of the new models but also offers a spare parts service, even for machines which were supplied 50 years ago.
THE JOHN Lewis Partnership is one of the latest companies taking advantage of the reliability and savings in areas like footprint, energy and maintenance by using Moducel air handlers with fanwall technology, at its newest store in east London.
The Stratford store is the company’s first brand new shop in London in over 20 years. It is also the first of a new generation of carbon efficient stores that uses advanced air conditioning and cooling systems to reduce its overall carbon footprint by 60%. Nine weather-proofed LKP systems have been installed on the roof top. Four of them feature Moducel’s fanwall technology and are supplying conditioned air to each of the store’s sales floors.
With strict building criteria in place to ensure that all suppliers conformed to John Lewis’ environmental and carbon reducing commitments, it was a requirement that the HVAC system provided the capacity for air handling units to operate in free-cooling mode when outside air temperatures fall below 11°C. Consideration also had to be given to noise transfer via mechanical plant and ventilation ductwork to adjacent retail units and all internal plant and ventilation systems had to be designed to ensure they did not exceed NR40 (noise rating).
Noise levels of Fanwall are typically 12dBa or lower and the technology also offers
greater energy savings than conventional air handlers. The use of smaller fans provides the added
benefit of built- in redundancy,
negating the need for standby units and simplifies maintenance.
The fanwall technology systems are made up of AHU 1 – six 22in fan modules with an extract of 15.6m3/s and a supply of 17.27m3/s with a single DIDW centrifugal fan.
AHU 2 – six 20in fan modules with an air extract of 13.75m³/s and a supply of 15.0m3/s single DIDW centrifugal fan.
AHU 3 – six 22in fan modules with an extract of 15.84m3/s and a supply of 17.6m3/s with a single DIDW centrifugal fan.
AHU 4 – four 20in fan modules with an extract of 8.47m3/s and a supply of 9.35m3/s with a single DIDW centrifugal fan
These units also have cooling coils with air by-pass features which reduces the off coil moisture content, helping to
maintain the required room conditions of 23°C with 50% RH.
The five other LKP air handling units are supplying conditioned air to the partners’ offices and dining room, cloakrooms and administrative offices as well as the stores ‘place to eat’ restaurant and kitchen areas.
Moducel’s LKP range of air handlers is based on a modular concept that offers a build- to-go approach combining high efficiency and reliability. There are 77 models in the range with air volumes up to 27m³/s and four frame options suit individual project requirements.
Control panels and control items for all the units were factory fitted and wired by Moducel.
Imtech Meica was the mechanical engineering consultant and the units were custom designed to meet their specification schedules.
Optimum wins Wellcome hard service contract
GLOBAL charitable foundation, the Wellcome Trust, has selected Optimum Group Services to deliver hard services across its London-based buildings. Optimum Group Services has been contracted to maintain the medical research charity’s mechanical and electrical systems, as well as its external and internal fabric. The three-year FM contract covers four properties encompassing
ACR News November 2013
a total area of 56,000m2. It comprises a diverse building portfolio which includes the Wellcome Trust’s corporate offices and a public-facing exhibition venue, a world- renowned medical research library and conference centre facilities all housed within Wellcome Collection. The Wellcome Collection building, at 183 Euston Road, was built in 1932 from Portland stone. In contrast, the Trust’s administrative headquarters are located
in the modern adjoining glass and steel building at 215 Euston Road. Known as the ‘Gibbs Building’ this spacious structure was opened by Her Majesty the Queen in 2004 and now accommodates more than 500 staff.
“We very much look forward to making a positive contribution to the Wellcome Trust and it’s very clear to us that the building and staff deserve nothing less than first class
delivery,” said Tod Harrison, managing director of Optimum Group Services. “I am very pleased we have chosen Optimum Group Services. Their core values of ‘visibility, responsiveness and trust’ match the culture we have here at the Wellcome Trust. They have already set very high standards through the new contract mobilisation,” said Alan Aldridge, building services manager at the Wellcome Trust.
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