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

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

doi:10.1115/1.2814131

Cited by 19 publications

(13 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…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: 97%

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

Liu

Zhang

Zhao

et al. 2018

Advances in Mechanical Engineering

View full text Add to dashboard Cite

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.

show abstract

Section: Introductionmentioning

confidence: 97%

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

Liu

Zhang

Zhao

et al. 2018

Advances in Mechanical Engineering

View full text Add to dashboard Cite

show abstract

“…The High Pressure Turbine airfoils as well as the Power Turbine airfoils are cooled. They are made of INCO 738 coated with a silicon aluminide coating, (Shepard et al, 1994).…”

Section: Performancementioning

confidence: 99%

“…In industrial gas turbine industry, fuel economy can be achieved by introducing a recuperator in the baseline engine, Horlock, (2003). This device recovers waste energy from the gas turbine exhaust, preheating the air entering the combustion chamber, improving cycle efficiency and reducing fuel consumption, Shepard et al (1994). The development of the Rolls Royce WR-21 engine for marine applications is based on this concept, Colin (2003).…”

Section: Wave Rotor Two-shaft Recuperated Gas Turbines Analysismentioning

confidence: 99%

“…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%

See 1 more Smart Citation

Gas turbine performance enhancement for naval ship propulsion using wave rotors

Fatsis

2021

Journal of Marine Engineering & Technology

View full text Add to dashboard Cite

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.

show abstract

“…In practice, Rolls-Royce intercooled recuperated marine model WR21 [7] [8] whose SFC curve illustrated in Figure 2 is showing significant fuel saving capability when compared with other existing cycle options. Its cycle layout incorporates intercooling and heat exchange for the purpose of improving part-load performance at low power demand operations.…”

Section: Introductionmentioning

confidence: 99%

Comparative Assessment of Two Thermodynamic Cycles of an aero-derivative Marine Gas Turbine

Bonet¹

2013

IOSR-JMCE

View full text Add to dashboard Cite

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

Cited by 19 publications

References 4 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

Comparative Assessment of Two Thermodynamic Cycles of an aero-derivative Marine Gas Turbine

Contact Info

Product

Resources

About