Gas Turbine Handbook : Principles and Practices

180 Gas Turbine Handbook: Principles and Practices
1. Engine inlet air to Compressor
2. Air is compressed by Impeller.
3. Compressed air is sent to Recuperator.
4. Duct directs compressed air into Recuperator
5. Recuperator heats the compressed air using
exhaust energy.
6. Compressed and now heated air is directed
towards Combustion Chamber
7. Heated Air is mixed in the Combustion Chamber
with natural gas and ignited.
8. Exhaust from combustion process is directed
through turbine wheel causing alternator to
rotate, which provides an output of 105 W
9. Ehaust is passed to the Recuperator to heat the
Compressor delivery air.
10. Exhaust exits the Recuperator.
Figure 11-6. Courtesy of Elliott Energy Systems, Inc. The TA100 CHP
microturbine is packaged as a combined heat and power generator
set capable of producing 100 kW of electrical energy and 172 kW of
thermal power per hour. Cogeneration usage can consist of hot water,
absorption chiller or drying system applications. Depending upon the
user application, overall total thermal efficiency could be greater than
75%. The microturbine operates at a 4:1 compressor ratio and a simple
cycle heat rate of 12,355 Btu/kW-Hr.