incabandsaws

Efficiency is further enhanced with the use of magnetic bearings, which avoid fire friction of rubbing parts associated with traditional oiled bearings. Conventional bearings can use as much as 10,000 w, while magnetic bearings require only 180 w. That amounts to 500 times less friction loss. Current development projects are expanding the range and duty of the compressor wheels and promise to offer even greater efficiency for water-cooled and air-cooled duties and different capacities.CONTROLSThe new compressor effectively is a computer. It provides diagnostic and performance information through Modbus to the refrigeration system, which then communicates to the building automation system through Modbus, LonWorks, or BACnet.CHILLER APPLICATIONThe compressor manufacturer and a major chiller manufacturer teamed up to develop a line of ARI-certified water-cooled chillers, which were expected to be introduced in January 2004. The combination of flooded-evaporator technology and an oil-free system has allowed very close approaches and, subsequently, enhanced performance. The integrated VFD allows excellent part-load performance as power consumption drops off, depending on the head relief, near the cube root of the shaft speed.

The following Wednesday nobody showed up. A week later, the table disappeared into the basement, where it soon became moldy from a water leak. It took a month before we could look at each other in the eye and the notion became, unanimously and without deliberation, a topic of taboo.But the idea of a round table, where no seat is privileged, and all eyes look through the same pocket of air, has continued its hold on me. After years of carrying the notion with me through travels and co-ops, I now find myself literally carried by the idea. A community around a table is--in many ways--the real thing, not just the launching pad.

"That was way back in 1968," Braswell recalls today. "One of the first things I learned was that mowing often leads to landscaping. And landscaping creates even more opportunity."What''s the greatest market change in last three decades?Braswell found even more business in tree care. His local company soon became Southern Tree & Landscape. It began, he recalls, with "nine employees in a small office trailer," and later grew to several hundred in multiple locations."New customers would often contact us to maintain their yards," Braswell explains, but "then they''d decide to do some landscaping and tree-planting. We became experts at both.""The biggest market change," Braswell emphasizes, "is that even people who love to do yard work decide to have someone else to do their maintenance. This opens all sorts of new markets."

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