Marks & Spencer has some 960 branches, of which 615 are food-only outlets. With its “Plan A”, M&S is looking to become more energy efficient, and as part of that undertaking is gradually fitting out its buildings with energy-saving technology. The condensers on the store roofs used to be major energy guzzlers, because they used older-style AC fans. M&S approached ebm-papst to find a more efficient solution.
The retrofit was completed after just 4,150 working hours. (Photo: ebm-papst)
The switch to HyBlade 910 mm diameter EC axial fans with AxiTop diffusers... (Photo: ebm-papst)
... will save M&S more than 500,000 pounds. (Photo: ebm-papst)
More efficiency on the roof
After a promising trial attempt, the order was placed. Everything then had to move rapidly, as Tony Wright, Divisional Director Upgrade Market at ebm-papst UK, reports: “M&S wanted to benefit quickly from the energy-saving potential of our solution.” One challenge was the requirement that the cooling systems had to keep running during the retrofit – with a total of 1,404 fans in 258 condensers at more than 150 stores. M&S engaged a capable installer in AB Group. “To ensure that the system could keep running as the upgrade was being carried out, they gradually replaced complete groups of fans,” says Wright.
As a result, the work was completed after just 4,150 working hours, in three months. The switch to HyBlade 910 mm diameter EC axial fans with AxiTop diffusers will save M&S more than 500,000 pounds. That means the investment in the upgrade is projected to have paid off within less than five years.
“It was a truly collaborative and successful project.”
Tony Wright, Divisional Director Upgrade Market ebm-papst UK
The new fans allow quieter, more efficient operation, cope better with higher outside temperatures, and can be easily adjusted down in colder months. “It was a truly collaborative and successful project,” Wright sums up.