Variable speed controller cuts steam costs
15 Jan 2000
A new boiler control system from Meggitt Mobrey's Bestobell Service is claimed to reduce running costs by 30 per cent or more. Using a variable speed drive for direct control of the pump, the feedwater control system is said to do away with the inefficiencies of the traditional method of using a modulating feed valve.
Fluctuating demands for steam on typical process sites has in the past led to gross inefficiency in boiler operation through continuous running of large feedwater pumps. Using a modulating feed valve to regulate the amount of water entering the boiler results in wasted energy when the pump and valve are working against each other.
The new control system avoids this, with expected annual savings per boiler of around £1500-2000, with payback likely within 18 months to two years.
