A lesson in energy efficiency
Fläkt Woods has been awarded a contract by AMEC / FES to supply energy efficient HVAC solutions and the fan package for the South Lanarkshire Schools £352.2 million Public Finance Initiative (PFI) project.
This is the largest PFI project in the education sector, and Fläkt Woods is initially supplying seven schools in the South Lanarkshire region of Scotland. Construction will have three phases scheduled for completion in the second halves of 2007, 2008, and 2009. AMEC’s overall contract involves the construction and facilities management of seventeen new and two refurbished secondary schools for South Lanarkshire Council.
HVAC for new schools is a complex mixture of requirements. A critical factor in specific areas is comfort cooling, with as little air movement as possible, a high degree of energy efficiency and low draught displacement.
To this end, Fläkt Woods technicians proposed a specific range of the company’s products. This includes the EU air handlers with high efficiency fans delivering low SFP’s. The EU units feature run-around coils and plate heat-exchanger heat recovery systems.
The Company is also supplying chillers. Fläkt Woods chillers are designed for high efficiency at part load as well as at peak load to minimise the overall annual energy con¬sumption. The chillers also come complete with twin pumps and expansion vessel.
In educational establishments, cooling water is needed during periods of the year when the outdoor temperature is low. By installing a chiller with a free cooling circuit, it is possible to cool the water without running the compressors, which saves a considerable amount of energy, reducing wear and maintenance costs.
For the ceiling voids Fläkt Woods’ Voidpack air handling units were selected because of the low 350mm depth and are complete with side by side recuperators. These robust units are primarily designed for installation where access is of prime consideration. Double skin insulated panels offer good thermal and acoustic properties with maximum attenuation through casings. The motors are 100% variable speed.