Press Release
DRIVE PROVIDES COOL ENERGY SAVING SOLUTION AT HENRY
DENNY
Control Techniques has produced improved temperature control in
a food company’s chilled rooms
The installation of a large freestanding variable
speed AC drive from Control Techniques has produced improved
temperature control in a food company’s chilled rooms – and is well
on the way to delivering a massive saving of around £23,400 in
their annual electricity bill – a cut of 50% of the plant’s total
power usage!
Henry Denny & Co manufactures a wide range of
pies, sausage rolls, pasties, cottage pies and so on. At its
Portadown plant in Northern Ireland, a complex of 20 chilled rooms
stores a huge amount of not only the company’s own production
output, but, as the site acts as a regional distribution depot for
Northern Ireland, it also holds many £thousands of cheeses, butter,
hams and bacon from other companies in the Kerry Group too.
“We have a large ammonia compressor to keep the
cold rooms within very carefully controlled temperatures,” explains
Henry Denny’s Electrical Engineer, Ciaran McSherry, “and,
previously this was soft-started and run up to full speed on
demand.”
When the company had to replace the soft starter
for the compressor, Mr McSherry recommended a change to a variable
speed AC drive. “The compressor is a major contributor to the
plant’s total base load,” he says, “and I felt that there were
savings to be made by providing more precise control of the
compressor. But even I was surprised when the payback turned
out to be just six months!”
The company turned to its preferred drives supplier Control
Techniques, a major supplier to the Kerry Group throughout
Ireland. The Dublin Drive Centre recommended a freestanding
Unidrive SP for the task, additionally meeting the space
constraints for the drive’s required location and, subsequently
supplying a compact 315 KW unit just 400-mm wide in October 2006.
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