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1. INTRODUCTION Small gas turbines started being developed approximately 15 years ago, especially in the USA. These microturbines can be used as efficient decentralized power generators in combination with heat supply by using advanced techniques such as a recuperator, modern high voltage and control electronics. The present generation of microturbines combines the advantage of low maintenance costs with high efficiency and low emissions. Flue gases can be used in heat-demanding processes with and without the use of extra heat exchanging equipment. Thus, significant energy savings and emission reduction can be realized. Other benefits of microturbines are high power density (output power vs. dimensions), high reliability, long lifetime and fuel diversity. Because microturbines have a high air demand, the use of flue gases as “semi combustion air” is possible in combustion processes. In the USA, Capstone Turbine Corporation has made an important contribution to the development of microturbines utilizing air bearings and air cooling. With respect to machines utilizing e.g. oil bearings, Capstone machines require less maintenance, such as change of oil or oil filters. Capstone microturbines are currently available in three different scales with respect to electrical power: 65 kWe, 60 kWe and 30 kWe microturbines, all with an electrical efficiency of approx. 28%. They are available in several fuel consumption designs, such as natural gas and biogas, and there is a choice between a grid connected or a stand alone model. Other microturbine manufacturers are Bowman Power, Elliot Power Systems and Ingersoll Rand. In the past, Turbec also built microturbines. 2. AIM The aim of the project is to solve the problems regarding fitting microturbines into applications. This has led to the development of peripherals, suitable in microturbine areas, by Gasunie Engineering & Technology on the commission of Gasunie Trade & Supply, Dutch Ministry of Housing, Spatial Planning and the Environment and some manufacturers. The equipment developed will expand the utilization of microturbines in certain areas. 3. DEVELOPMENT OF PERIPHERALS The peripherals are developed and demonstrated to function properly according to the results in several projects. Discussions with manufacturers are taking place to achieve commercially available hardware. High Efficiency Small Scale Heat Exchanger For cases in which hot liquid media are needed (e.g. water) and limited line-up space is available, a small scale heat exchanger was developed. For Capstone microturbines, there are several heat exchangers (e.g. Unifin) available, but they need much set-up space. Moreover, thePDF Image | DEMONSTRATION OF CAPSTONE MICROTURBINES INCLUDING HIGH EFFICIENCY HEAT EXCHANGER, GAS SAFEGUARD MODULE AND NATURAL GAS COMPRESSOR, DEVELOPED BY GASUNIE ENGINEERING & TECHNOLOGY
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DEMONSTRATION OF CAPSTONE MICROTURBINES INCLUDING HIGH EFFICIENCY HEAT EXCHANGER, GAS SAFEGUARD MODULE AND NATURAL GAS COMPRESSOR, DEVELOPED BY GASUNIE ENGINEERING & TECHNOLOGYOriginal File Name Searched:
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