Design and Development of the WR-21 Intercooled Recuperated (ICR) Marine Gas Turbine

Shepard, Sam B.; Bowen, Thomas L.; Chiprich, J. M.

doi:10.1115/94-gt-079

Cited by 9 publications

(8 citation statements)

References 2 publications

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“…Schematic diagram of WR-21 gas turbine. 4 shown in Figure 3(a), the traditional intercooled system is usually composed of two parts which are, respectively, named on-engine intercooler (plate-fin heat exchanger) and off-engine intercooler (plate heat exchanger). The on-engine intercooler is designed to decrease the temperature of air from low-pressure compressor using water or ethylene glycol-water as coolant.…”

Section: System Description and Thermodynamic Modelsmentioning

confidence: 99%

“…As a kind of effective approach to sharply improve the overall performance of gas turbine, intercooled (IC) cycle or intercooled regenerated (ICR) cycle attracts more and more attentions due to their great potentials in decreasing the power consumption of high-pressure compressor. 1,2 In recent years, the successful application or experiment of IC industrial gas turbine (LMS100) 3 and ICR marine gas turbine (WR-21) 4 has verified the feasibility and effectiveness of the above two cycle technologies.…”

Section: Introductionmentioning

confidence: 95%

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Performance analysis of organic Rankine cycle power generation system for intercooled cycle gas turbine

Liu

Zhang

Zhao

et al. 2018

Advances in Mechanical Engineering

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Intercooled cycle gas turbine has great potential in improving the output power because of the low energy consumption of high-pressure compressor. In order to more efficiently recovery and utilize the waste heat of the intercooled system, an organic Rankine cycle power generation system is developed to replace the traditional intercooled system in this study. Considering the effects of different kinds of organic working fluids, the thermodynamic performance of organic Rankine cycle power generation system is investigated in detail. On this basis, the sensitivity analyses of some key parameters are conducted to study the operating improvements of organic Rankine cycle power generation system. The results indicate that the integration of organic Rankine cycle and intercooled cycle gas turbine not only can be used for waste heat power generation but also increases the output power and efficiency of intercooled cycle gas turbine by selecting the organic working fluids of n-butane (R600), n-pentane (R601), toluene, and n-heptane. And compared to the others, organic Rankine cycle power generation system with toluene exhibits the best performance. The maximum enhancements of output power and thermal efficiency are 6.08% and 2.14%, respectively. Moreover, it is also concluded that both ambient temperatures and intercooled cycle gas turbine operating conditions are very important factors affecting the operating performances of organic Rankine cycle power generation system.

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Section: System Description and Thermodynamic Modelsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 95%

Performance analysis of organic Rankine cycle power generation system for intercooled cycle gas turbine

Liu

Zhang

Zhao

et al. 2018

Advances in Mechanical Engineering

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show abstract

“…The most popular of those applied in marine gas turbines is the ICR (Intercooled Recuperated) cycle where a recuperator (or regenerator) is added after the low pressure compressor, prior to the combustion chamber of the intercooled cycle to recover waste exhaust heat and heat up the compressed air. Shepard et al (1994) concluded that the ICR cycle leads to efficiency increase of the baseline engine. An alternative method for efficiency improvement and at the same time power increase is the integration of a pressure wave exchanger or wave rotor to marine gas turbines.…”

Section: Introductionmentioning

confidence: 99%

Gas Turbine Performance Enhancement for Naval Ship Propulsion using Wave Rotors

Fatsis¹,

Balushi²

2019

Conference Proceedings of ICMET Oman

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The propulsion demands of high speed naval vessels often rely on gas turbines fitted in small engine rooms, producing significant amounts of power achieving thus high performance requirements. Gas turbines can be used either to provide purely mechanical propulsion, or alternatively to generate electricity, which is subsequently used by electric drives to propel the ship. However, the thermal efficiencies of gas turbines are lower than those of Diesel engines of similar power, in addition to the fact that all gas turbines are less efficient as the ambient temperature rises, particularly for aero-derivative engines. In the context of improving the performance of existing marine gas turbines with minimum modifications to their baseline configuration, this article is proposing engine’s performance enhancement by integrating a pressure wave supercharger (or wave rotor), while keeping the compressor, combustion chamber and turbine entry temperature of the baseline engine unchanged. Thermodynamic cycle analysis for two-shaft gas turbine engines configurations with and without heat exchanger to recuperate the waste heat from the exhaust gases, typical for marine propulsion is performed for the baseline engines, as well as for the topped with four-port wave rotor engines, at design point conditions and their performances are compared accordingly. Important benefits are obtained for four-port wave rotor-topped engines in comparison to the self-standing baseline engines for the whole range of engine’s operation. It is found that the higher the turbine inlet temperature is, the more the benefit gain of the wave rotor topped engine is attained in terms of efficiency and specific power. It is also concluded that the integration of wave rotor particularly favours engines operating at low compressor pressure ratios and high turbine inlet temperatures. The effect of variation of the most important parameters on performance of the topped engine is investigated. It is concluded that wave rotor topping of marine gas turbines can lead to fuel savings and power increase.

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“…Intercooled (IC) cycle or intercooled regenerated (ICR) cycle technology is a feasible method to develop highpower marine gas turbine, which may represent a major development tendency for a new generation of marine main propulsion plants [2]. The successful application of WR-21 marine gas turbine further verified the feasibility and effectiveness of intercooled regenerated cycle technology to increase engine power for marine gas turbine [3].…”

Section: Introductionmentioning

confidence: 99%

Dynamic Time‐Delay Characteristics and Structural Optimization Design of Marine Gas Turbine Intercooler

Zhao

Wen

2014

Mathematical Problems in Engineering

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Aiming at the rapid mobility of marine gas turbine and the dynamic time-delay problem of intercooler for intercooled cycle marine gas turbine, the dynamic simulation model of intercooler was set up based on effectiveness-number of transfer units (ε-NTU) and lumped parameter method in this paper. The model comprehensively considers related physical properties dependent on temperature. Dynamic response characteristics of gas outlet temperature and pressure and coolant outlet temperature of intercooler with different materials and coolants in the change of operation condition of marine gas turbine were analyzed in detail. Besides, this paper explored the use of simulated annealing algorithm for structural optimization of intercooler. The results showed that both material and coolant were the significant factors that affected the heat transfer and dynamic performance of intercooler. The heat transfer and dynamic performance of the intercooler obtained by using simulated annealing algorithm were better than those of preliminary design.

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Design and Development of the WR-21 Intercooled Recuperated (ICR) Marine Gas Turbine

Cited by 9 publications

References 2 publications

Performance analysis of organic Rankine cycle power generation system for intercooled cycle gas turbine

Performance analysis of organic Rankine cycle power generation system for intercooled cycle gas turbine

Gas Turbine Performance Enhancement for Naval Ship Propulsion using Wave Rotors

Dynamic Time‐Delay Characteristics and Structural Optimization Design of Marine Gas Turbine Intercooler

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