Catalogus : Recensies
Recensies
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Ingo Schmitz Magere vorgemischte Verbrennung von leichtem Heizöl in Mikrogasturbinen: Grundlagen, Entwurf und experimentelle Untersuchung eines Brenner-/Brennkammersystems ISBN: 978-3-8322-8292-9 Prijs: 48,80 € / 97,60 SFR |
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| Micro gas turbines are an interesting alternative for decentral power supply. The droplet size is a decisive factor in lean premixed combustion. In this process, substoichiometric air supply reduces the combustion temperature so that a minimum of thermal NOx will be produced. The compressor air must be distributed inside the combustion chamber so that stable and low-polluting combustion is ensured over a wide load range. Prior to the onset of combustion, the fuel must be mixed homogeneously with air in a premix section whose design should prevent self-ignition during mixing as well as flame backlash. In a specially constructed test stand, a combustion chamber designed on the basis of CFD calculations and theoretical considerations was tested under micro gas turbine conditions. During the first test phase, the influence of various constructive changes on pollutant emission was investigated. The effects of combustion chamber pressure and air preheating temperature on the emissions were assessed in a second test phase. It was found that both a pressure increase and a temperature increase will stabilize combustion in the direction of higher global air rates while the NOx emissions will increase slightly as a result of the higher combustion temperatures. On the basis of fundamental scientific investigations, it was possible to develop a MGT combustion chamber which meets the goals of low-pollution, low-cost and efficient power generation. In the load range of 40 - 100 percent, stable and low-polluting combustion was ensured, with NOx emissions below 25 ppm, CO emissions below ppm and 15 percent O2. The combustion chamber pressure loss is very low at 1.6 percent, as is the heat loss at 3.1 percent at the most. (orig.) | |
| Bron: ETDE - Energy Database-production no.:DE09GC142 | |
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