For the first time, rotary regenerative heaters at the lower end of the size range are being engineered to meet the economic and environmental circumstances of the foreseeable future, rather than the vastly different conditions that prevailed three or more decades ago.
The Howden pre-engineered package heater offers significantly reduced leakage, better thermal performance, greatly improved cleanability, ease of maintenance and exceptional long-term reliability. Our research in recent years has been driven by the global need to reduce fuel consumption and minimise environmental impact, and these industrial preheaters incorporate developments that have already proven their value in highly critical applications.
For replacement heaters in existing plants, we provide new equipment that matches the previous unit while bringing vastly improved efficiency and thermal performance. We fit the package to existing foundations, ductwork, power supplies and other site arrangements, introducing valuable gains in performance and reliability with the minimum of on-site work.
We supply industrial package heaters in
sizes up to 21.5 in both vertical and horizontal
configurations, and virtually every parameter
can be modified or changed to suit the
application and duties of the heater and the
preferences of the customer. Heaters up to
size 17.5 are housed in a square casing with
no need for transition ducts, and size 18 and
above are in octagonal casings with transition
ducts. These factors are, however, fully
customisable at the customer’s request.
Apart from the ever-increasing need to maximise the benefits we draw from our limited supplies of fossil fuels and to reduce environmental emissions, there are compelling economic reasons to make the change as part of the strategic forward planning of the plant.
The cost of repairing and maintaining package heaters that are more than twenty years old should be carefully balanced against the potential benefits of replacement.
Primarily, there is the need to balance the capital investment, a figure greatly reduced by our parametric design and production processes, against both the maintenance budget, which naturally increases as the heater becomes older, and the increasing possibility of an unplanned outage due to fouling, plugging or other failure. The costs associated with maintaining an aging heater to operate at the operation level necessary for optimum boiler performance combined with the increased risk of unplanned outages can be more than those of replacement with an updated and efficient Howden industrial package heater. The argument for a serious examination of the costs and savings are powerful even from this standpoint.
Regenerative air heaters offer distinct advantages over tubular air heaters. These include:
Reduced leakage and fuel costs
One of the most significant advancements we have introduced is the use of effective seals in this size range. An effective sealing system substantially decreases FD fan power consumption and increases performance of equipment downstream from the air preheater. These are highly sensitive issues now and likely to grow even more important in the future. We install as standard double axial seals and either single or double radial seals configuration as required. Our principle task is to match the heater we supply to the exact performance parameters set by the customer.
The leading manufacturer of heating elements irrespective of the original manufacturer.
It’s our duty to offer only the very highest standards of service whatever their needs, from initial installation of plant and equipment through routine maintenance to subsequent refurbishment and enhancements.
Over the many years of our ongoing heater applications experience, Howden have investigated and developed important innovative solutions including leakage sealing systems, cleaning systems and intelligent monitoring.
© Howden Group 2018. All rights reserved