Technical Article Writing & PR for the Energy Industry

Adaptive Brush Seals Restore Air Preheater Performance

As an energy industry marketing firm Krishnan & Associates develops specialized technical and commercial content for our energy industry clients. Here is an example of an article that we wrote and published for our client in the energy industry:

Power | March 2014 | Sealeze

Air preheater (APH) leakage has several negative consequences, including lost revenue. A better design for APH seals has been shown to have several benefits over traditional metal strip seals, including a quick payback.

The gas sealing systems used on rotary, regenerative air preheaters (APHs) have evolved little from the metal strip configuration used on the first Ljungström preheaters nearly a century ago. Metallic strip seals are typically used for radial, axial, and circumferential seals that are exposed to corrosive gases at relatively high temperatures. Steel seal degradation begins soon after installation, and the inevitable result is increased air-to-gas leakage over time, which translates into increased fuel consumption and fan power usage. If you’ve ever experienced “running out of fan,” it’s likely that APH leakage is part of the problem.