Development of a Thermal Approach to Optimize the Waste Heat Utilisation From an Existing Gas Turbine Station Without Heat Recovery System

2003 ◽  
Author(s):  
Guyh Dituba Ngoma ◽  
Amsini Sadiki
Keyword(s):  
Gas Turbine ◽  
Heat Recovery ◽  
Waste Heat ◽  
Finned Tube ◽  
Pressure Tube ◽  
Exhaust Gas ◽  
Static System ◽  
Recovery System ◽  
Heat Recovery System ◽  
Tube Banks

The present work deals with a numerical simulation of a flow in finned tube banks arranged behind a gas turbine. Three models of dual-pressure tube systems are developed and analyzed in order to predict the static system performances by optimizing the utilization of the exhaust gas from an existing gas turbine without heat recovery system. For more precise modeling, the theoretical analysis of finned tube banks systems is based on the non-linear conservation equations of mass, momentum and energy. Simulations are accomplished to prove the effectiveness of the present work in performance prediction of the dual-pressure tube systems. The obtained results clearly show the necessity to take into account all relevant physical phenomena in the simulation of flows in and across finned tube banks installed behind a gas turbine. The results also reveal the different operating behavior of the developed models considering combined effects of the exhaust gas parameters and the tube geometries.

scholarly journals Installation of a Waste Heat Recovery System at a Gas Turbine-Driven Compressor Station

1983 ◽  
Author(s):  
Charles J. Tateosian ◽  
George K. Roland
Keyword(s):  
Gas Turbine ◽  
Heat Recovery ◽  
Waste Heat Recovery ◽  
Waste Heat ◽  
Working Fluid ◽  
Compressor Station ◽  
Water Steam ◽  
Waste Heat Recovery System ◽  
Recovery System ◽  
Heat Recovery System

A waste heat recovery system for generation of electricity has been added to a natural gas pipeline compressor station. The heat recovery system, utilizing a dual pressure Rankine cycle with water/steam as the working fluid, increases the overall thermal efficiency of the 12,500 hp simple cycle gas turbine from 25.3% to 36.1%. The system will generate power for the local electric distribution system.

scholarly journals Review Paper on Inverted Brayton Cycles

2020 ◽  
pp. 78-84 ◽  
Keyword(s):  
Heat Recovery ◽  
Waste Heat ◽  
Combustion Engine ◽  
Thermodynamic Cycle ◽  
Exhaust Gas ◽  
Energy Of Combustion ◽  
Recovery System ◽  
Heat Recovery System ◽  
Primary Cycle ◽  
Further Development

The exhaust gas from an internal combustion engine contains approximately 30% of the thermal energy of combustion. Waste heat recovery (WHR) systems aim to reclaim a proportion of this energy in a bottoming thermodynamic cycle to raise the overall system thermal efficiency. One of promising heat recovery approaches is to employ an inverted Brayton cycle (IBC) immediately downstream of the primary cycle. However, it is a little-studied approach as a potential exhaust-gas heat-recovery system, especially when applied to small automotive power-plants.The experiments of the IBC prototype were conducted in the gas stand. The correlated IBC model can be utilized for the further development of the IBC system. Researchers were reviewed core paper on Inverted Brayton Cycles (IBC) and concluded that there were possibility of heat recovery system in that for changing different mechanical components.

scholarly journals DD-963 Class Waste Heat Recovery System Experience

1979 ◽  
Author(s):  
T. E. Graf ◽  
J. E. Nagengast
Keyword(s):  
Gas Turbine ◽  
Heat Recovery ◽  
Waste Heat Recovery ◽  
Waste Heat ◽  
Turbine Engine ◽  
Waste Heat Recovery System ◽  
Future System ◽  
Recovery System ◽  
Heat Recovery System ◽  
Probability Of Success

The DD-963 Class ships are the first U.S. Navy vessels to utilize a waste heat recovery system on a gas turbine engine. This paper will present the experience gained from the three years of shipboard operation with the system. The experience will be used to develop areas for consideration that can improve the probability of success in future system procurements. The areas to be considered are: (a) the need for definitive military specifications; (b) the need to test at Navy laboratories and (c) the need to test complete systems under simulated shipboard conditions.

Waste Heat Recovery for Locomotive Engines Using the Organic Rankine Cycle

2015 ◽  
Author(s):  
Yousef Jeihouni ◽  
Michael Franke ◽  
Klaus Lierz ◽  
Dean Tomazic ◽  
Peter Heuser
Keyword(s):  
Heat Recovery ◽  
Waste Heat Recovery ◽  
Waste Heat ◽  
Organic Rankine Cycle ◽  
Rankine Cycle ◽  
Exhaust Gas ◽  
Waste Heat Recovery System ◽  
System A ◽  
Recovery System ◽  
Heat Recovery System

Locomotive engines are emitting high levels of exhaust gas emissions and substantial amount of particulates which is thought to have significant global warming potential. In the past years locomotive regulations have been implemented in the United States to control the emission in this application. Also it can be observed that engine emitted carbon dioxides (CO2) will be limited soon for all on-road engine categories to meet the Green House Gases (GHG) norms. Tier 4 standards apply to locomotives since the beginning of 2015 for newly built or remanufactured engines. NOx and particulate limits have been reduced by around 70% compared to the Tier 3 standards requiring significant advancements in engine technology and / or exhaust aftertreatment solutions. EGR technology is an option to reduce NOx emissions to Tier 4 locomotive standards indeed of its impact on engine fuel consumption as well as the emitted CO2 gas, which may be controlled either by future CO2 or fuel consumption standards. To cope with this challenge, new engine technology concepts need to be developed. A waste heat recovery system is a beneficial solution to recover the wasted energies from different heat sources in the engine. Especially the considerable amount of exergy in the exhaust gas (EGR and tailpipe), which results from its high temperature and mass flow, has significant recovery potential. By utilizing a waste heat recovery system a portion of this exergy can be converted into a usable form of power, which then will increase the effective power output of the engine system. A major challenge is to recover the wasted exhaust energy with the maximum possible system efficiency. In a Tier 4 locomotive engine, heat from the EGR system as well as the tailpipe waste heat can be recovered by using an Organic Rankine Cycle (ORC) waste heat recovery system. This paper will discuss the results of a waste heat recovery (ORC) system evaluation for locomotive applications. With the help of thermodynamic calculations the incremental power from ORC system as well as the fuel economy benefit will be evaluated and discussed. Additionally, a reasonable working fluid and the system layout, which are considered for thermodynamic calculations, will be reviewed.

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