The flexible seal was developed to reduce normal leakage caused by the thermal expansion of the rotor while the unit is operating. Although expansion characteristics vary per individual heater, typical differential expansion in rotary type air heaters causes the rotor to pull away from the hot side and move towards the cold sector plates. This rotor expansion opens up areas of direct air to gas leakage that can be greatly reduced by installing our flexible seals. In today's power market, with new emission control systems requiring air heaters to run more efficiently than ever before, our flexible seals can help your units reduce stack emissions, increase fan reserve, heat rate and overall efficiency.
The method of installation of the “Flexible” seal is no different than that of the original seal other than the degree of clearance set at cold conditions and the preparation of the sector plate edge.
Since this is an interference or contact seal, the wear life is not expected to exceed 18 months of continuous operation in severe cases. During this time the “Flexible” seal will allow all of the benefits of lower air heater leakage to its user. In some cases flexible seals have lasted 5-6 years. These benefits may range as follows:
Reeves & Woodland Industries Inc.
Office: (951) 926-8877 Fax: (951) 926-1412
P.O Box 159, Homeland, Ca. 92548
24475 Gradera Road, Homeland, Ca. 92548
AIR HEATER SEALS & PARTS, HIGH EFFICIENCY FLEXIBLE SEALS
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