Adapting the Micro-Gas Turbine Operation to Variable Thermal and Electrical Requirements

2005 ◽  
Vol 127 (3) ◽  
pp. 514-524 ◽  
Author(s):  
Fabio Bozza ◽  
Maria Cristina Cameretti ◽  
Raffaele Tuccillo
Keyword(s):  
Gas Turbine ◽  
Thermal Cycle ◽  
Heat Recovery ◽  
Mechanical Load ◽  
Heat Recovery Boiler ◽  
Variable Speed ◽  
Micro Gas Turbine ◽  
Thermal Output ◽  
Wide Range ◽  
Component Matching

This paper examines the possibilities for a micro-gas turbine operation under a wide range of thermal and mechanical load requirements. The authors focus the attention on a partially recuperated thermal cycle based on a by-pass option towards the heat recovery boiler, in order to adapt the gas turbine operation to increasing needs of thermal output. In addition, a variable speed operation is considered as a more reliable method for decreasing the mechanical output without producing an excess in efficiency decay. The actual possibilities of the above-named regulation tools are examined by an integrated procedure which involves, besides an accurate thermodynamic preliminary analysis, the component matching study and the CFD based simulation of the combustion chamber.

Adapting the Micro-Gas Turbine Operation to Variable Thermal and Electrical Requirements

2003 ◽  
Author(s):  
Fabio Bozza ◽  
Maria Cristina Cameretti ◽  
Raffaele Tuccillo
Keyword(s):  
Gas Turbine ◽  
Thermal Cycle ◽  
Heat Recovery ◽  
Mechanical Load ◽  
Heat Recovery Boiler ◽  
Variable Speed ◽  
Micro Gas Turbine ◽  
Thermal Output ◽  
Wide Range ◽  
Component Matching

This paper examines the possibilities for a micro-gas turbine operation under a wide range of thermal and mechanical load requirements. The authors focus the attention on a partially recuperated thermal cycle based on a by-pass option towards the heat recovery boiler, in order to adapt the gas turbine operation to increasing needs of thermal output. In addition, a variable speed operation is considered as a more reliable method for decreasing the mechanical output without producing an excess in efficiency decay. The actual possibilities of the above named regulation tools are examined by an integrated procedure which involves, besides an accurate thermodynamic preliminary analysis, the component matching study and the CFD based simulation of the combustion chamber.

Experimental Determination of the Heat Recovery Boiler Effectiveness of a Gas Turbine Plant

2014 ◽  
Vol 659 ◽  
pp. 503-508
Author(s):  
Sorin Gabriel Vernica ◽  
Aneta Hazi ◽  
Gheorghe Hazi
Keyword(s):  
Experimental Data ◽  
Gas Turbine ◽  
Heat Recovery ◽  
Heat Recovery Boiler ◽  
Experimental Point ◽  
Experimental Data Processing ◽  
Turbine Plant ◽  
Transfer Unit ◽  
Gas Turbine Plant ◽  
Recovery Boiler

Increasing the energy efficiency of a gas turbine plant can be achieved by exhaust gas heat recovery in a recovery boiler. Establishing some correlations between the parameters of the boiler and of the turbine is done usually based on mathematical models. In this paper it is determined from experimental point of view, the effectiveness of a heat recovery boiler, which operates together with a gas turbine power plant. Starting from the scheme for framing the measurement devices, we have developed a measurement procedure of the experimental data. For experimental data processing is applied the effectiveness - number of transfer unit method. Based on these experimental data we establish correlations between the recovery boiler effectiveness and the gas turbine plant characteristics. The method can be adapted depending on the type of flow in the recovery boiler.

New Concept of a Micro Gas Turbine Based Co-Generation Package for Performance Improvement in Practical Use

2005 ◽  
Author(s):  
Kenichiro Mochizuki ◽  
Satoshi Shibata ◽  
Umeo Inoue ◽  
Toshiaki Tsuchiya ◽  
Hiroko Sotouchi ◽  
...  
Keyword(s):  
Gas Turbine ◽  
Steam Generator ◽  
Thermal Efficiency ◽  
Heat Recovery ◽  
Steam Injection ◽  
Operating Conditions ◽  
Market Potential ◽  
Injection System ◽  
Heat Recovery Steam Generator ◽  
Micro Gas Turbine

As the energy consumption has been increasing rapidly in the commercial sector in Japan, the market potential for the micro gas turbine is significant and it will be realized substantially if the thermal efficiency is improved. One of measures is to introduce the steam injection system using the steam generated by the heat recovery steam generator. Steam injection tests have been carried out using a micro gas turbine (Capstone C60). Test results showed that key performance parameters such as power output, thermal efficiency and emissions were improved by the steam injection. The stable operation of micro gas turbine with steam injection was confirmed under various operating conditions. Consequently, a micro gas turbine based co-generation package with steam injection driven by a heat recovery steam generator (HRSG) with supplementary firing is proposed.

Thermodynamic Characteristics of Hybrid Solar Microgas Turbine Plants under Tropical Climate

2021 ◽  
Vol 2 (43) ◽  
pp. 20-35
Author(s):  
Andrey V. Dologlonyan ◽  
◽  
Dmitriy S. Strebkov ◽  
Valeriy T. Matveenko ◽  
◽  
...  
Keyword(s):  
Gas Turbine ◽  
Solar Collector ◽  
Heat Recovery ◽  
Tropical Climate ◽  
Simple Cycle ◽  
Turbine Engines ◽  
Gas Turbine Engines ◽  
Turbine Plant ◽  
Micro Gas Turbine ◽  
Gas Turbine Plant

The article presents the results obtained during the study of the characteristics of hybrid solar micro-gas turbine units with an integrated parabolocylindrical solar collector. The efficiency of a hybrid solar gas turbine plant depends both on the efficiency of the solar collector and the location of its integration, and on the efficiency of the gas turbine engine. (Research purpose) The research purpose is in studying hybrid solar gas turbine installations based on a parabolocylindrical focusing solar collector in combination with micro-gas turbine engines of various configurations to determine the most suitable match. (Materials and methods) The article considers four basic schemes of gas turbine engines running on organic fuel, their parameters and optimization results. The article presents the main climatic parameters for the study of the focusing solar collector, as well as the parameters of the collector itself and the main dependencies that determine its efficiency and losses. The place of integration of the focusing solar collector into the gas turbine plant was described and justified. (Results and discussion) Hybrid solar micro-gas turbine installations based on micro-gas turbine engines of a simple cycle, a simple cycle with heat recovery, a simple cycle with a turbocharger utilizer, a simple cycle with a turbocharger utilizer and heat recovery for tropical climate conditions were studied on the example of Abu Dhabi. (Conclusions) The most suitable configuration of micro-gas turbine engines for integrating a focusing solar collector is a combination of a simple cycle with a turbocharger utilizer and regeneration. The combination of micro-gas turbine engines of a simple cycle with a turbocharger heat recovery and heat recovery with an integrated focusing solar collector can relatively increase the average annual efficiency of fuel consumption of such installations in a tropical climate by 10-35 percent or more, while maintaining cogeneration capabilities.

Analysis of Part Electric Gas Turbine: A Novel Hybrid Propulsion Concept

2019 ◽  
Author(s):  
M. S. N. Murthy ◽  
Subhash Kumar ◽  
Sheshadri Sreedhara
Keyword(s):  
Gas Turbine ◽  
Electric Motor ◽  
Gas Turbines ◽  
Operating Conditions ◽  
Variable Speed ◽  
Hybrid Propulsion ◽  
Design Point ◽  
Part Load ◽  
Wide Range ◽  
Efficient Option

Abstract A gas turbine engine (GT) is very complex to design and manufacture considering the power density it offers. Development of a GT is also iterative, expensive and involves a long lead time. The components of a GT, viz compressor, combustor and turbine are strongly dependent on each other for the overall performance characteristics of the GT. The range of compressor operation is dependent on the functional and safe limits of surging and choking. The turbine operating speeds are required to be matched with that of compressor for wide range of operating conditions. Due to this constrain, design for optimum possible performance is often sacrificed. Further, once catered for a design point, gas turbines offer low part load efficiencies at conditions away from design point. As a more efficient option, a GT is practically achievable in a split configuration, where the compressor and turbine rotate on different shafts independently. The compressor is driven by a variable speed electric motor. The power developed in the combustor using the compressed air from the compressor and fuel, drives the turbine. The turbine provides mechanical shaft power through a gear box if required. A drive taken from the shaft rotates an electricity generator, which provides power for the compressor’s variable speed electric motor through a power bank. Despite introducing, two additional power conversions compared to a conventional GT, this split configuration named as ‘Part Electric Gas Turbine’, has a potential for new applications and to achieve overall better efficiencies from a GT considering the poor part load characteristics of a conventional GT.

Optimal waste heat recovery in micro gas turbine cycles through liquid water injection

2014 ◽  
Vol 70 (1) ◽  
pp. 846-856 ◽  
Author(s):  
Ward De Paepe ◽  
Francesco Contino ◽  
Frank Delattin ◽  
Svend Bram ◽  
Jacques De Ruyck
Keyword(s):  
Gas Turbine ◽  
Liquid Water ◽  
Heat Recovery ◽  
Waste Heat Recovery ◽  
Waste Heat ◽  
Water Injection ◽  
Micro Gas Turbine

scholarly journals Total Energy Applications for Ships Service Power

1973 ◽  
Author(s):  
G. T. Greene ◽  
C. E. Warner
Keyword(s):  
Total Energy ◽  
Gas Turbine ◽  
Gas Turbines ◽  
Heat Recovery ◽  
High Speed ◽  
Thermal Power ◽  
Electrical Power ◽  
Energy System ◽  
Heat Recovery Boiler ◽  
Energy Applications

With the advent of high-speed, gas-turbine-powered naval vessels, new lighter weight concepts are required for service power. This paper demonstrates how a gas-turbine-driven ship service generator set can be used to supply multiple functions, including electrical power, thermal power, pneumatic power, and direct shaft-driven equipment. The thermal power can be used to perform heating, distillation plant operation, galley services, and air conditioning functions. The Canadian DDH 280 Class destroyer system is presented as an example of a total energy system. Heat recovery boiler and gas turbine characteristics are presented for 600-hp and 5000-hp marine gas turbines. A gas turbine total energy system is compared to a conventional diesel system without heat recovery.

Waste Heat Recovery from Micro Gas Turbine Co-generation System by Rankine Cycle

2002 ◽  
Vol 2002.8 (0) ◽  
pp. 31-36
Author(s):  
Tomohito TAKADA ◽  
Takayuki MASUKAWA ◽  
Noriyuki NABESHIMA ◽  
Hiroyuki HASHIMOTO ◽  
Norio SAWADA ◽  
...  
Keyword(s):  
Gas Turbine ◽  
Heat Recovery ◽  
Waste Heat Recovery ◽  
Waste Heat ◽  
Rankine Cycle ◽  
Generation System ◽  
Micro Gas Turbine

Development of Chemically Recuperated Micro Gas Turbine

2002 ◽  
Vol 125 (1) ◽  
pp. 391-397 ◽  
Author(s):  
T. Nakagaki ◽  
T. Ogawa ◽  
H. Hirata ◽  
K. Kawamoto ◽  
Y. Ohashi ◽  
...  
Keyword(s):  
Gas Turbine ◽  
Steam Reforming ◽  
Gas Turbines ◽  
Heat Recovery ◽  
Methane Steam Reforming ◽  
Endothermic Reaction ◽  
Micro Gas Turbine ◽  
Methane Steam ◽  
High Emission ◽  
Turbine Exhaust

Micro gas turbines (MGTs) are subject to certain problems, notably low thermal efficiency of the system and high emission including NOx. The chemically recuperated gas turbine (CRGT) system introduced in this paper is one of the most promising solutions to these problems. The CRGT system we propose uses an endothermic reaction of methane steam reforming for heat recovery. It is usually thought that the reaction of methane steam reforming does not occur sufficiently to recover heat at the temperature of turbine exhaust, but we confirmed sufficient reaction occurred at such low temperature and that applications of the chemical recuperation system to some commercial MGTs are effective for increasing the efficiency.

Exergy Analysis of Micro Gas Turbine Tri- Generation System

2012 ◽  
Vol 433-440 ◽  
pp. 6641-6645
Author(s):  
K. Akramian ◽  
M. Moosavi ◽  
A. Etminan
Keyword(s):  
Gas Turbine ◽  
Heat Recovery ◽  
Exergy Analysis ◽  
Waste Heat ◽  
Heat Recovery Steam Generator ◽  
Generation System ◽  
Flow Rates ◽  
Micro Gas Turbine ◽  
Absorption Chillers ◽  
Steady State Model

This paper presents exergy analysis of Micro Gas Turbine (MGT) system. It is proposed to use hot MGT exhaust gases heat in a heat recovery steam generator to produce steam. Absorption chillers can help to increase the performance of MGT tri generation plants. MGTs are fuelled with natural gas and their waste heat is used to drive absorption chillers and other thermal energy users. Based on a steady-state model of the processes, exergy flow rates are calculated for all components and a detailed exergy analysis is performed. The components with the highest proportion of irreversibility in these systems are identified and compared.

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