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Sainsbury's – LED and HVAC Upgrade

As part of Sainsbury’s 20 by 20 Sustainability Plan, Graphite 6, Energy & Technical Services was appointed as the main contractor to project manage improvement works to the Plymouth Armada Centre Superstore.

After completing a comprehensive survey of the store, Energy & Technical Services identified four key energy saving initiatives which comprised LED lighting upgrades, optimising refrigeration, air source heat pump replacements and replacement of plug fans to the Air Handling Unit (AHU).

Works involved replacing the existing T5, T8 and T12 lights on the sales floor, along with back of house, external canopy and car park lights to LED. The refrigeration time control settings were reset to the correct schedules and the existing air source heat pump units (operating on electric heater batteries), were replaced to more efficient systems.

In addition, a new 15kWh plug fan was installed to replace the old 18.5 kWh belt driven fan and motor to the AHU.

Challenge

Works had to be completed in a single phase at night to ensure trade was not impacted. Energy & Technical Services was instrumental in coordinating the works through close consultation with subcontractors and client representatives.

Added Value / Achievements

Energy & Technical Services deployed several approved specialist subcontractors to further interrogate/investigate the energy saving initiatives proposed, to ensure the anticipated savings were as accurate as possible. The energy savings delivered by the combined works was 413,620 kWh equating to £43,017 pa with a store energy reduction of 20% and an approximate pay back of 4.46 years.

HVAC review & led lighting upgrade

Energy saving project management

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BNP Paribas – Simulated Power Failure

The power test was successful with back-up power supplies, fire alarms, emergency lighting, pedestrian access systems all operating as expected during power failure. All equipment operated correctly and efficiently when power was reinstated.

Harris Lamb – Mechanical & Electrical Performance Specification

Successful office fit-out project with upgraded VRF heat pump cooling, LED lighting and heat recovery ventilation. Improved energy efficiency and occupant comfort led to an increase in the Energy Performance Certificate (EPC) rating from C to B.