Acoustic Behavior of Exhaust Heat Recovery Systems for Gas Turbines

1973 ◽  
Author(s):  
Marv Weiss
Keyword(s):  
Gas Turbines ◽  
Heat Recovery ◽  
Empirical Method ◽  
Acoustic Energy ◽  
Exhaust Heat ◽  
Exhaust Noise ◽  
Gas Turbine Exhaust ◽  
Semi Empirical ◽  
Exhaust Heat Recovery ◽  
Turbine Exhaust

Gas turbine exhaust heat recovery systems have demonstrated the ability to attenuate acoustic energy without the benefit of sound absorbing materials. This paper describes the mechanisms utilized by heat recovery steam generators (HRSG) and by regenerators to reduce exhaust noise. Included is a semi-empirical method by which the attenuation of an HRSG can be predicted. Attenuations exhibited by the heat recovery equipment are in excess of 10 dB.

scholarly journals Design of Gas Turbine Exhaust Heat Recovery Boiler Systems

1984 ◽  
Author(s):  
V. L. Eriksen ◽  
J. M. Froemming ◽  
M. R. Carroll
Keyword(s):  
Gas Turbine ◽  
Gas Turbines ◽  
Heat Recovery ◽  
Performance Criteria ◽  
Exhaust Heat ◽  
Recovery Boilers ◽  
Gas Turbine Exhaust ◽  
The Impact ◽  
Exhaust Heat Recovery ◽  
Turbine Exhaust

Heat recovery boilers utilizing the exhaust from gas turbines continue to be viable as industrial cogeneration systems. This paper outlines the types of heat recovery boilers available for use with gas turbines (1–100 MW). It discusses the design and performance criteria for both unfired and supplementary fired gas turbine exhaust heat recovery boilers of single and multiple pressure levels. Equations to assist in energy balances are included along with design features of heat recovery system components. The economic incentive to achieve the maximum practical heat recovery versus the impact on boiler design and capital cost are examined and discussed. It is intended that the information presented in this paper will be of use to individuals who are not intimately familiar with gas turbine heat recovery systems so that they can better specify and evaluate potential systems.

scholarly journals General Design Considerations for Gas Turbine Waste Heat Steam Generators

1968 ◽  
Author(s):  
W. V. Hambleton
Keyword(s):  
Gas Turbine ◽  
Heat Recovery ◽  
Waste Heat ◽  
Steam Generation ◽  
Steam Generators ◽  
Design Considerations ◽  
Exhaust Heat ◽  
Gas Turbine Exhaust ◽  
Exhaust Heat Recovery ◽  
Turbine Exhaust

This paper represents a study of the overall problems encountered in large gas turbine exhaust heat recovery systems. A number of specific installations are described, including systems recovering heat in other than the conventional form of steam generation.

scholarly journals Gas Turbine Exhaust Heat Recovery by Hybrid Steam/Ternary Aqueous Immiscible Liquid Cycle

1984 ◽  
Author(s):  
B. M. Burnside
Keyword(s):  
Gas Turbine ◽  
Gas Turbines ◽  
Heat Recovery ◽  
Immiscible Liquid ◽  
Working Fluid ◽  
Exhaust Temperature ◽  
Boiling Points ◽  
Exhaust Heat ◽  
Gas Turbine Exhaust ◽  
Turbine Exhaust

The concept of the dual pressure steam/pure organic hybrid immiscible liquid cycle applied to recover exhaust heat from gas turbines is extended to include organic mixtures. Thermodynamics of the resulting ternary working fluid cycle is presented. For the cycle arrangement analysed it is calculated that the ternary steam/nonane/decane cycle with the organic very nonane rich produces about 2% more work than the corresponding all steam cycle for a typical gas turbine exhaust temperature. It is estimated that this advantage can be raised to about 4% by adding additional heaters at the stack end of the heat recovery generator. The analysis shows that it is unnecessary to use a pure alkane organic. A mixture containing up to about 5% of alkanes with higher boiling points than nonane is adequate.

scholarly journals Field Testing the Performance of Gas Turbine Exhaust Heat Recovery Steam Generators

1975 ◽  
Author(s):  
G. W. Bush ◽  
J. W. Godbey
Keyword(s):  
Gas Turbine ◽  
Heat Recovery ◽  
Performance Test ◽  
Test Procedure ◽  
Field Tests ◽  
Steam Generators ◽  
Exhaust Heat ◽  
Gas Turbine Exhaust ◽  
Exhaust Heat Recovery ◽  
Turbine Exhaust

This paper will present the results, to date, of the joint effort by the user-manufacturer coauthors to develop a reliable and generally accepted performance test procedure for gas turbine exhaust heat recovery steam generators. The knowledge and experience gained from several field tests will be detailed to support recommendations of procedures to follow and instrumentation to use in overcoming some very perplexing problems.

scholarly journals Gas Turbine Heat Recovery Systems: Evaluation Criteria for the Unfired Systems

1985 ◽  
Author(s):  
Akber Pasha
Keyword(s):  
Gas Turbine ◽  
Heat Recovery ◽  
Evaluation Criteria ◽  
Design Procedure ◽  
Design Parameters ◽  
Exhaust Heat ◽  
Recovery System ◽  
Heat Recovery System ◽  
Gas Turbine Exhaust ◽  
Turbine Exhaust

The design of a gas turbine exhaust heat recovery system (HRS) depends upon evaluating various parameters. Basically for an unfired heat recovery system the heat contained in the gas turbine exhaust is fixed and output is determined based on the system’s effectiveness. One of the design objectives is to maximize the output and thus maximize the effectiveness. However, increase in effectiveness will increase required heat transfer surface and thus the cost of the HRS. The increased cost (and benefits) must be evaluated to establish whether the higher effective system is economically justifiable. The evaluation criteria of a heat recovery system involves analysis of various design parameters. This paper presents the general design procedure, the effect of each parameter on the design and basic criteria used to develop the HRS design.

The Reduction of Low Frequency Gas Turbine Exhaust Noise: A Case Study

1996 ◽  
Author(s):  
William C. Lucas ◽  
George F. Hessler
Keyword(s):  
Gas Turbines ◽  
Low Frequency ◽  
Development Program ◽  
Exhaust System ◽  
Field Testing ◽  
Frequency Noise ◽  
Airborne Noise ◽  
Exhaust Noise ◽  
Gas Turbine Exhaust ◽  
Turbine Exhaust

A well reported, industry-wide problem with simple cycle peaking gas turbines installed near residences is excessive low frequency airborne noise, sometimes termed “infrasound.” If the noise level is high enough, it can cause perceptible vibration of windows and frame buildings, and provoke an adverse response from the community. Such a situation recently occurred after construction of a four unit GT 11N1 peaking station. A team of specialists and outside consultants was formed to investigate the problem, and a development program found that a thick absorber could be effective against infrasound. This led to the design of a thick panel absorber which was installed at the rear of a 90 degree turn in the exhaust system. Field testing verified that the low frequency noise from the turbine exhaust was reduced by 5.9 and 6.7 dB in the 31.5 and 63 Hz octave bands respectively, and by 5.5 dB(C) overall.

Dual Pressure Steam/Immiscible Liquid Cycles for Gas Turbine Exhaust Heat Recovery

1982 ◽  
Vol 104 (1) ◽  
pp. 77-83
Author(s):  
B. M. Burnside
Keyword(s):  
Gas Turbine ◽  
Heat Recovery ◽  
Immiscible Liquid ◽  
Heat Extraction ◽  
Exhaust Heat ◽  
Pressure Steam ◽  
Percent Increase ◽  
Combined Cycles ◽  
Gas Turbine Exhaust ◽  
Turbine Exhaust

A dual pressure steam/immiscible liquid cycle gas turbine bottoming plant is described. Three variants of the cycle are analysed. It is shown that under typical conditions one of these shows a 5 percent higher output than the conventional steam/steam cycle with only a 5 percent increase in heat extraction from the gas turbine exhaust. A larger LP preheater and condenser are required. Attention is drawn to the flexibility this type of cycle brings to the task of matching bottoming plant to gas turbine exhaust of combined cycles.

Gas-Turbine-Exhaust Heat-Recovery Cycle

1960 ◽  
Author(s):  
G. L. Morris
Keyword(s):  
Gas Turbines ◽  
Major Elements ◽  
Process Equipment ◽  
Exhaust Gas ◽  
Industrial Installation ◽  
Exhaust Heat ◽  
Recovery Boilers ◽  
Gas Turbine Exhaust ◽  
Power Boiler ◽  
Turbine Exhaust

This paper is based on an operating industrial installation that the author’s company has engineered and constructed. It presents the various studies made by the engineers to arrive at the best all around solution, based on installed cost, ease of operation, simplicity, and over-all cycle thermal efficiency. Major elements of the installation are as follows: 1) Two 7500-hp simple-cycle gas turbines for driving process equipment. 2) Two 30,000-lb/hr watertube, two-drum, pressurized recovery boilers complete with a stack-type economizer, for heating feedwater for the recovery boiler and power boiler plus a separate economizer for process feedwater heating. 3) Two 40,000-lb/hr watertube, two-drum, balanced-draft power boiler capable of using either air or turbine exhaust gas for combustion air.

Economic Selection of Plant Cycles and Fuels for Gas Turbines

1974 ◽  
Author(s):  
W. B. Wilson ◽  
W. J. Hefner
Keyword(s):  
Gas Turbine ◽  
Gas Turbines ◽  
Energy Costs ◽  
Industrial Plants ◽  
Exhaust Heat ◽  
Process Plants ◽  
Gas Turbine Exhaust ◽  
Economic Selection ◽  
Selection Of ◽  
Turbine Exhaust

Energy costs can be reduced in most large process plants by the use of turbines to supply power and heat. Performance characteristics of gas turbines, gas turbine exhaust heat boilers and combined gas-steam turbine cycles, plus the typical heat balance diagrams included in this paper will help the reader visualize economic applications for turbines in different industrial plants. The effect different fuels have on gas turbine maintenance (costs and downtime) and other application parameters are included. The information provided will permit the user to assess his own situation and then select the most economic fuel for a specific gas turbine application.

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