Rehlko Generator Test Cell Exhaust Evacuation System

Kohler Power Systems (now Rehlko) in Mosel, Wisconsin, is one of the largest manufacturers of engine/generator sets to produce uninterruptable power. Rohde Brothers, Inc. collaborated with Rehlko to design a system to withdraw 30,000 cfm of 900°F diesel exhaust from a V-20 engine, convey it through the indoor test cell, and disperse it outside. Rohde and its equipment suppliers designed, fabricated, and installed a pedestal-mounted, articulating arm exhaust withdrawal system with a roof-mounted exhaust fan. This project was not only unique from the volume and temperature of the exhaust gas that had to be removed, but from its ability to fit into the available space constraints and reach all the possible tailpipe locations for each combination of engine size and corresponding exhaust emission package. The solution required specialized high-temperature materials and designs that account for repeated thermocycling, thermal expansion, and very high overhung loads. Rohde and its partners designed, installed and commissioned the complete project on budget in 45 weeks. This project highlights Rohde’s ability to deliver high-performance systems through engineering, fabrication, and field installation expertise.