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LP Gas Use in Microturbine Applications Executive Summary Among the new technologies for generating heat and power, microturbines are at the top of the list. “Microturbine” is the term typically applied to turbines rated at 0.2 mW (megawatts) to 2 mW, and are essentially small jet engines that produce power and heat. Microturbine technology has emerged from four different technologies: small gas turbines, auxiliary power units, automotive gas turbines, and turbochargers. Typically microturbines consist of several subsystems including a compressor, a combustor, a turbine, an alternator, a recuperator and a generator. Microturbines have the potential to offer advantages over conventional reciprocating engines. These advantages include very low emissions, small number of moving parts, long term reliability, lower vibrations, lower maintenance costs, compactness, light weight and greater energy efficiencies when using waste heat from the exhaust. Our initial report issued in 2001 described microturbine technology, the advantages and limitations of such, and discussed the state of the rapidly evolving microturbine industry. This Final Report includes that initial discussion along with some actual “case studies” where LP Gas microturbines are in use today. These case studies provide an interesting variety of end uses in three distinct countries. As with any new technology, reality sometimes differs from “potential”. In the case of microturbines, many of the technical issues have been overcome. One technical challenge remains and is being actively pursued: how to provide ample pressure to the turbine particularly in colder climates. When using a microturbine in the automotive market (hybrid electric vehicle) another challenge has been identified: how to educate those integrating the power unit into a vehicle configuration so as to provide a safe, efficient and reliable source of power. Finally, the euphoria of any new technology must be tempered with marketing reality. Here the challenge is to find those unique applications where the benefits of microturbines match the customer’s needs. Microturbines are no longer a technological dream that must leap from the laboratory into commercialised reality with an unknown time frame. As shown in the case studies microturbines have made that leap. Yet, reality dictates that a microturbine is not a power unit than can simply be dropped off a truck and “plugged in”. A keen understanding of the technology, integration with the fuel system and matching customer expectations is essential. The LP Gas industry and the customer will be best served if these requirements are well understood and practiced before promises are made. 1PDF Image | Glotec Global Technology Network LP Gas Use in Microturbine Applications
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