0
Research Papers: Gas Turbines: Microturbines and Small Turbomachinery

Micro Gas Turbine Recuperator: Steady-State and Transient Experimental Investigation

[+] Author and Article Information
Mario L. Ferrari

Thermochemical Power Group (TPG), Dipartimento di Macchine, Sistemi Energetici e Trasporti (DiMSET), Università di Genova, Genova 16145, Italymario.ferrari@unige.it

Matteo Pascenti

Thermochemical Power Group (TPG), Dipartimento di Macchine, Sistemi Energetici e Trasporti (DiMSET), Università di Genova, Genova 16145, Italymatteo.pascenti@unige.it

Loredana Magistri

Thermochemical Power Group (TPG), Dipartimento di Macchine, Sistemi Energetici e Trasporti (DiMSET), Università di Genova, Genova 16145, Italyloredana.magistri@unige.it

Aristide F. Massardo

Thermochemical Power Group (TPG), Dipartimento di Macchine, Sistemi Energetici e Trasporti (DiMSET), Università di Genova, Genova 16145, Italymassardo@unige.it

J. Eng. Gas Turbines Power 132(2), 022301 (Nov 05, 2009) (8 pages) doi:10.1115/1.3156822 History: Received March 19, 2009; Revised March 24, 2009; Published November 05, 2009; Online November 05, 2009

The aim of this work is the experimental analysis of a primary-surface recuperator, operating in a 100 kW micro gas turbine, as in a standard recuperated cycle. These tests, performed in both steady-state and transient conditions, have been carried out using the micro gas turbine test rig, developed by the Thermochemical Power Group at the University of Genova, Italy. Even if this facility has mainly been designed for hybrid system emulations, it is possible to exploit the plant for component tests, such as experimental studies on recuperators. The valves installed in the rig make it possible to operate the plant in the standard recuperated configuration, and the facility has been equipped with new probes essential for this kind of tests. A wide-ranging analysis of the recuperator performance has been carried out with the machine, operating in stand-alone configuration, or connected to the electrical grid, to test different control strategy influences. Particular attention has been given to tests performed at different electrical load values and with different mass flow rates through the recuperator ducts. The final section of this paper reports the transient analysis carried out on this recuperator. The attention is mainly focused on thermal transient performance of the component, showing the effects of both temperature and flow steps.

Copyright © 2010 by American Society of Mechanical Engineers
Your Session has timed out. Please sign back in to continue.

References

Figures

Grahic Jump Location
Figure 6

Compressor inlet temperature control system scheme for heating operations (see Fig. 1 for nomenclature)

Grahic Jump Location
Figure 7

Turbine outlet temperature control system scheme (see Fig. 1 for nomenclature)

Grahic Jump Location
Figure 8

Primary-surface recuperators ready to be installed in T100 machines (courtesy of Turbec)

Grahic Jump Location
Figure 9

Machine connected to the electrical grid: steady-state recuperator effectiveness (compressor inlet temperature fixed at 301.15 K)

Grahic Jump Location
Figure 10

Machine connected to the electrical grid: steady-state recuperator boundary temperatures (see Fig. 1 for nomenclature)

Grahic Jump Location
Figure 11

Machine in stand-alone configuration: steady-state recuperator effectiveness (compressor inlet temperature fixed at 301.15 K)

Grahic Jump Location
Figure 12

Machine in stand-alone configuration: steady-state recuperator boundary temperatures (see Fig. 1 for nomenclature)

Grahic Jump Location
Figure 13

Machine in stand-alone configuration with different bleed mass flow rates: steady-state recuperator effectiveness (compressor inlet temperature fixed at 301.15 K)

Grahic Jump Location
Figure 14

Machine in stand-alone configuration with different bleed mass flow rates: steady-state recuperator boundary temperatures (see Fig. 1 for nomenclature)

Grahic Jump Location
Figure 15

Machine in stand-alone configuration: transient recuperator effectiveness

Grahic Jump Location
Figure 16

Machine in stand-alone configuration: transient recuperator outlet temperature (cold side)

Grahic Jump Location
Figure 1

Plant layout and instrumentation (the complete legend for transducers is reported in Ref. 19)

Grahic Jump Location
Figure 5

Compressor inlet temperature control system scheme for cooling operations (see Fig. 1 for nomenclature)

Grahic Jump Location
Figure 17

Machine in stand-alone configuration: transient recuperator boundary temperatures after a +50 kW load step (see Fig. 1 for nomenclature)

Grahic Jump Location
Figure 18

Machine in stand-alone configuration with different bleed mass flow rates: bleed valve fractional opening and recuperator mass flow rate in transient conditions

Grahic Jump Location
Figure 19

Machine in stand-alone configuration with different bleed mass flow rates: net electrical power and recuperator effectiveness in transient conditions

Grahic Jump Location
Figure 20

Machine in stand-alone configuration with different bleed mass flow rates: recuperator boundary temperatures in transient conditions (see Fig. 1 for nomenclature)

Grahic Jump Location
Figure 2

Recuperator and mGT flow details (courtesy by Turbec)

Grahic Jump Location
Figure 3

Test rig picture (volume side)

Grahic Jump Location
Figure 4

Air/water heat exchanger with water pipes for compressor inlet temperature control

Tables

Errata

Discussions

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related Journal Articles
Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In