Onslow st, Guilford case study
2
Energy consumption reduced by 60 to 89% in Guildford PROJECT REFERENCE FACTS Customer: Onslow Street, Guildford Need: AHU upgrade / refurbishment Solution: Plug fans, Axial Fans, new filter banks and Coils Fläkt Woods has recently completed upgrading 3 Air Handling Units (AHU) and their associated extract fans ranging from 4.4kW to 55kW at Onslow Street in Guildford. Once completed the energy usage has been calculated to have been reduced on average by around 76%.
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Transcript of Onslow st, Guilford case study
Energy consumption reducedby 60 to 89% in Guildford
PROJECT REFERENCE
FACTS
Customer:Onslow Street, Guildford
Need: AHU upgrade / refurbishment
Solution: Plug fans, Axial Fans, new filter banks and Coils
Fläkt Woods has recently completed upgrading 3 Air Handling Units (AHU) and their associated extract fans ranging from 4.4kW to 55kW at Onslow Street in Guildford. Once completed the energy usage has been calculated to have been reduced on average by around 76%.
The annual savings estimated are £45,500.00 or 227 tonnes of Carbon
Fläkt Woods GroupFläkt Woods is a global company providing solutions for ventilation and air treatment for buildings as well as fan solutions for Industry and Infrastructure applica-tions.
By combining their dedi-catedrange of Chilled Beams, Air Handing Units and Air Cooled Chillers, Fläkt Woods has beenable to produce some of the most efficient and green indoor air quality (IAQ) solutions currently available within the Building Services Industry.
Contact informationTim [email protected]äkt Woods Ltd UKwww.flaktwoods.com
Fläkt Woods Limited
Axial Way, Colchester, Essex. CO4 5ZD, UK
t +44 (0)1206 222547
© Copyright 2011 Fläkt Woods Group
Due to a policy of continuous development and improvement the right is reserved to supply products which may differ from those illustrated and described in this publication. Certified dimensions will be supplied on request on receipt of order.
The expected annual savings on electricity costs are £45,500 with an environmental benefit in terms of CO2 emission reduction of 227 tonnes.
Fläkt Woods brief was to refurbish or upgrade each of the existing air handling units. The existing units had reached the end of their serviceable life and Fläkt Woods were invited to offer their suggestions to further the life of the units. Fläkt Woods identified a way to save energy by utilising plug fans and multistage axial fans, then controlling duty by using frequency Inverter drives. In this case, by opting to use a specialist HVAC range of drives to best match the fans and the existing control systems.
As Tim Hewes, Service Sales Engineer for Fläkt Woods explains “the customer needed a one stop shop for the concept, supply, delivery, installation of frequency inverter drives, fans, coils, filters and electrical package. A full team of project managers, fan engineers and electricians who could work in hand with the control engineers to ensure a smooth transition from old to new and minimisedisruption to the customer.”
The project was designed to prolong the life of the existing AHUs by replacing the fans and coils. Whilst refurbishing the AHU recommendations were made for energy savings and improvements in filtration and cooling capacity.
Office Supply Fans
Before After
CO2 Reduction
7.5
3734.5
44
132
% Saving
798967607385
MWh on Inverter
49363246
New kW
6.4
1145.5
3644
MWh
1983915
120
309
Original kW
6.9
3045.5
44
110
AHU / Fan
Restaurant E
xtract Fan
Restaurant S
upply Fan
Kitchen E
xtract Fan
Kitchen S
upply Fan
Office E
xtract Fans
Office S
upply Fans
