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believe oil bearings may occasionally present limited emission problems (if oil escapes from the bearings), and may not be able to perform with the rapidity needed for near instantaneous rpm changes at speeds near 100,000 rpm. The same engineers further claim that air bearings require less maintenance (no need for an oil system and pump), but air bearings may require air filters (which must be cleaned and/or replaced). III. Microturbine Manufacturing, Forces at Play, Trends, and Participants Commercial microturbines are here to stay. More LP Gas is being sold (and will be) because of this technology. Of all the “new” technologies, microturbines are one of the few that is sure to generate new healthy sales of LP Gas within the next several years. Currently, commercially available microturbines run on natural gas (pipeline and LNG), diesel, kerosene, LP Gas, methanol, ethanol, and jet fuel. In 1999, there were about 300 microturbines sold worldwide and in 2000 sales ramped up to about 1,200 units. However, that growth curved flattened out dramatically in 2001 when approximately 1,400 units were sold. The reasons are believed to be due to (1) higher natural gas prices making the technology less competitive that grid power, (2) a lessening in the US economy and (3) in some markets a sudden disappearance of the immediate energy crisis. The bulk of the product development and commercialisation work in this field is taking place in North America and in Europe. Major industrial concerns in North America, Europe and Japan have committed to, and have made major investments in, various firms who are advancing this technology. Converging economic and political forces are encouraging the development of this industry although the pace of expected growth is now uncertain. Among these are: (1) U.S. federal stimuli for power generation and combined heat systems; (2) the growth of e-commerce and associated telecommunication power demand; (3) power crisis similar to that experienced in California; and (4) decades of transmission and distribution system under-investment and deferred maintenance. The general and established trend toward distributed power generation has helped accelerate the microturbine market penetration. It is estimated that within 10 years distributed generation could account for up to 20% of all new installed power capacity if the assumptions used in early 2000 projections are again restored. In 1999, the average capacity of each unit shipped was 36KW, while in 2000 the per unit sold capacity was 45KW. For 2002, the average capacity of each unit is anticipated to be about 50KW. In 2000, shipment destinations were equally split between US and international markets. About 30% of all the microturbine installations in 2000 were for upstream oil and gas applications, including supplying power to oil and gas fields as well as gas processing. It is estimated that in 1999 about 5% to 6% of the shipments were for LP Gas applications (either fully or partially using LP Gas), whereas for 2001 it is estimated that 3 to 4% are were shipped for LP Gas applications (full and/or partial use). 7PDF Image | Glotec Global Technology Network LP Gas Use in Microturbine Applications
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