CASE STUDY BSEE
Armstrong variable speed pumps slash oce block’s energy consumpon
Variable speed pumps from Armstrong Fluid Technology are reducing energy consumpon at The Axis – a large commercial building in the centre of Birmingham.
sing demand-based control technology, the Armstrong variable speed pumps will reduce utility bills and improve the environmental performance at Birmingham’s The Axis office block. The pumps are also capable of optimising energy efficiency across a wider operating envelope, offering the building’s owners the best possible environmental performance irrespective of changes in tenancy and occupation levels.
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The Axis is an office complex of 178,000sq ft occupying a 4.15 acre site. Its location in the heart of the city has made it a popular commercial premises. The 11-storey building, supported by London and Continental Railways Limited, has recently undergone a major HVAC refurbishment. The site’s controls specialist, Demma Controls, asked Armstrong Fluid Technology to provide a proposal for the refurbishment of the site’s HVAC pumping system. The existing models – fixed speed end suction pumps from another manufacturer – were reaching the end of their life.
Sustainability
Armstrong was asked to suggest an alternative solution, which would reduce energy consumption, improve efficiency, and enhance the building's sustainability, with input from Demma Controls regarding the BMS interfacing. It was also important that the project could be carried out with minimal adaptation of pipework, and that the new pumps could be installed within a similar footprint to those currently installed.
The new pumps are Armstrong 4300 Series Design Envelope IVS variable speed models, which automatically optimise energy efficiency of the system across a wide range of operational conditions.
The pumps are a complete solution for heating and cooling systems, integrating a Vertical In-Line pump, motor, and Intelligent Variable Speed controller. They reduce pumping costs through variable speed, demand-based operation – consuming only the energy required, based on current system demand. The variable speed intelligence embedded in the controller enables the pump to respond instantaneously and automatically to system load, adjusting the speed of the pump and drawing only the power required to meet that load.
Energy efficiency continues to be optimised even if operational requirements of the building vary due to changes in tenancy or occupancy levels. This eradicates the need to trade-off the energy efficiency of the installation through over-sizing of equipment “to be on the safe side”. It also futureproofs the building by providing more flexibility over time without the need for costly HVAC refurbishment/upgrading.
Legislaon
connues to be opmised even if operaonal requirements of the building vary due to changes in tenancy or occupancy levels. This eradicates the need to tradeo the energy eciency of the installaon through oversizing of equipment ‘to be on the safe side’.
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www.bsee.co.uk BUILDING SERVICES & ENVIRONMENTAL ENGINEER MARCH 2016 19 Energy eciency
The efficiency of the pump motors is also well ahead of the incoming 2017 legislation which, in combination with the in- built variable speed intelligence, enables the pumps to deliver energy savings of up to 70%.
The pump accessories specified for The Axis delivered further project savings by reducing installation times. Armstrong Suction Guides and Flo-Trex valves reduce the requirement for pipework and fittings, and perform multiple functions with a single component.
Throughout their lifecycle, the pumps will reduce maintenance costs for the building owners. They feature an innovative split-coupled design, which enables seals to be replaced in situ, without removing the pump or motor. David Roper, Area Sales Manager at Armstrong Fluid Technology, said: “The Armstrong 4300 pumps are an extremely effective and reliable choice for commercial buildings such as this, and the extra flexibility provided by the Design Envelope design concept provides additional peace of mind for the building owners and occupiers.”
● Simple & Rapid Installations - in Minutes ● Joins plain-end Pipe - No Prep Required ● Reusable in Pipework Dis/Assembly ● Stress-Free Joining with Misalignment ● Problem Solver in Restricted Spaces ● WRc/WRAS Approved for Potable Water
Email:
info@mvfh.co.uk •
www.mvfh.co.uk
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