Hot blast recuperator air lowers required cupola heating energy by 30%. (Case History).Heating and maintaining the temperature of melting and holding furnaces requires significant energy use and costs. Kurdizel Industries, Inc., Rothbury, Michigan Rothbury is a village in Oceana County in the U.S. state of Michigan. The population was 416 at the 2000 census. Geography According to the United States Census Bureau, the village has a total area of 2.6 km² (1.0 mi²), all land. , has reduced these costs by utilizing waste heat to fire its furnaces. The company has installed an Escher hot blast Hot´ blast` 1. See under Blast. recuperator Re`cu´per`a`tor n. 1. (Steel Manuf.) Same as Regenerator. from Maumee Valley Fabricators, Toledo, Ohio
CSI CompuServe, Inc. CSI Commodity Systems, Inc. CSI Commodity Systems Inc. (Boca Raton, FL) CSI Crime Scene Investigation (CBS TV show) CSI Christian Schools International Industrial Systems, Grayling, Michigan Grayling is a city in the U.S. state of Michigan. As of the 2000 census, the city population was 1,952. It is the county seat of Crawford County6. Grayling takes its name from the Grayling fish that was once prevalent in its lakes and streams. ) that raises ambient air to 1000F (538C) before it enters the furnace, reducing the amount of energy input required to melt by nearly 33%. The recuperator consists of two concentric shells and 20 hollow fin heat exchange elements that are located around the inside perimeter. Cupola cupola /cu·po·la/ (koo´pah-lah) cupula. cu·po·la n. A cup-shaped or domelike structure. cupola cupula. blast air flows up the gap between the two shells, with the air volume flowing around the hollow fin heat exchange elements. Before ambient air enters the cupola, it is circulated through the hollow fin tubes while cupola combustion exhaust gases pass on the other side, raising blast air temperature. The system is designed to preheat 10,000 cu ft of air/mm to 1000F (538C), based on an exhaust temperature of 15001600F (816-871C). Before the installation of this system, this heat was simply wasted to the atmosphere. The project at Kurdziel cost $1.3 million and is expected to pay for itself in less than two years. The foundry now uses 30% less coke to fire its cupola. Based on coke prices between $200$210/ton and production ranging from 14-16 hr/day, annual fuel savings should range between $728,000-$873,000/yr. The foundry also is saving $200,000/yr in oxygen costs by eliminating the use of liquid oxygen in the melting process. According to Kirk Dow, vice president of operations, "Installation of [the system] has proven to be all that we anticipated with substantial fuel savings, and is less taxing on the emissions systems." The fuel savings from the project translate directly into pollution reductions as well since 30% less coke is combusted per unit of production. Circle No. 003 no last page. |
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