Dairy Crest has reduced gas
consumption at its Kirkby factory by
18%, thanks to a combination of
energy saving measures that included
steam system improvements
recommended by Spirax Sarco.

An improvement came from
raising the temperature in the boiler
feed tank from between 79 and 82°C,
to 96°C. Spirax says that, as a rule of
thumb, increasing the temperature of
the feed to a boiler by 6°C reduces
energy consumption by 1%; this
alone yields savings of at least 2%.

Condensate recovery also achieved
good results, raising the proportion
of hot, treated water recycled back to
the boiler from 76% to between 94
and 95%.