... of the influence hydrogen has on gas turbine combustion and specifically the impact of hydrogen blending with natural gas on a large, modern high efficiency combined cycle power plant. Results of the testing provide needed and positive information on near-term and future energy transition needs. The results...

... polytropic efficiency dissipation heat loss expansion numeric integration real gas steam Mollier uniflow reciprocating engine Abstract The polytropic efficiency is the best quality measure for compressing or expanding engines for compressible fluids. Compressor- and gas-turbine...

... Abstract Heat pumps are one of the most energy efficient ways to supply heat and have traditionally used hydrofluorocarbons (HFCs) as refrigerants. HFCs, due to their high Global Warming Potential (GWP) are gradually being phased out globally and are being replaced by ultra-low GWP natural...

... Abstract Efficiency is an essential metric for assessing turbine performance. Modern turbines rely heavily on numerical computational fluid dynamic (CFD) tools for design improvement. With more compact turbines leading to lower aspect ratio airfoils, the influence of secondary flows...

... Abstract Compressor performance prediction is still one of the significant interests in the turbomachinery research field. The two critical parameters for compressor design are adiabatic efficiency and stability margin. The Spalart-Allmaras (SA) turbulence model and modified SA models...

... the reciprocating steam engines until around 1930 with the exception of steam locomotives and some other niche applications. Up to now in steam cycle technology mostly the isentropic efficiency definition for expansion is used. Such numbers depend both on the dissipation and on the pressure ratio. In history...

... addition. If flashback were occurring, the emissions levels would be expected to be significantly higher. The results also demonstrate that added hydrogen to the fuel does not have a statistically significant impact on overall system efficiency. In general, the results show that the injectors can withstand...

.... combined cycles power-to-X flexibility cogeneration power-to-hydrogen power-to-ammonia efficiency Proceedings of ASME Turbo Expo 2022 Turbomachinery Technical Conference and Exposition GT2022 June 13-17, 2022, Rotterdam, The Netherlands GT2022-83003 MARKET OPPORTUNITIES FOR POWER-TO-X SOLUTIONS...

... Abstract Modern heavy duty industrial gas turbines in combined cycle configuration, with rated efficiencies (at ISO base load) above 60% net LHV, are expected to play a significant role in reducing the carbon footprint of utility scale electricity generation. Even without post-combustion...

... Abstract The current thermal performance of advanced gas turbines (J class) leads to combined cycle efficiencies exceeding 62%. Such results were achieved by making the gas turbines bigger, i.e., above 350 MW (larger air flow), and by increasing the firing temperature. However, a very...

... Abstract The paper describes the process of gas-dynamic modernization of a 16-stage axial compressor of an industrial gas turbine unit. Tests of the baseline variant of the compressor revealed a significant shortfall of efficiency, pressure ratio, and stability margins. In addition, the ongoing...

... Abstract This work will demonstrate how the Energy Recovery Inc. (ERI) engineering team improved the efficiency of a multistage pump by about 10% at the first stage, which translated into a 3% increase in the overall multistage pump efficiency; according to a set of engineering calculations...

... Abstract This paper presents the computational methodology, and experimental investigations accomplished to enhance the efficiency of a turbine stage by applying non-axisymmetric profiling on the rotor hub wall. The experimental setup was a two-stage axial turbine, which was tested at “LISA...

... process. It is well known that the evaporative cooling increases thermodynamic cycle efficiency and thus improves the fuel economy. A relatively unexplored area, however, is the entropy generation due to water phase change as well as the balance between the corresponding entropy yield and the savings from...

... of the blades of multi-stage axial compressors using 3D CFD modeling and commercial optimization programs as the main tools was developed. The basic parameters of the compressor (efficiency, pressure ratio, mass flow rate, etc.) can be improved using the created method correcting the shape of the blade profiles...

... of general design recommendations originates from this work, whereas the optimization loops would need to be repeated for other cooling module types. locomotive cooling fan guide vanes optimization CFD efficiency acoustics sound noise 1 Copyright © 2013 by ASME AERODYNAMIC AND ACOUSTIC...

... The heat transfer occurring within a turbocharger is closely coupled to the internal combustion exhaust. This process is highly complex and it is not taken account either in the choice of components nor is it reflected in the efficiency maps. In particular the flow within the compressor...

... industrial sectors, e.g. power generation, aircraft or automotive turbo chargers. For any application it is essential for the turbine to operate at best possible efficiency. It is known that for turbines the specific optimum achievable power output decreases with smaller size. A major contribution...

... with the available experimental data. The second volute studied is the one used for a mixed flow turbine in the turbocharger test rig at Imperial College. In this part of the study, the interest is focused on the influence of the volute inlet flow conditions on its performance (efficiency, exit flow angle, etc...

... amount of hydrogen can maintain its original efficiency and a loss of 14 efficiency points can be prevented. gas turbine low calorific fuel matching problem air/fuel premixing efficiency A ra ityo 26 th -1 -1 rw ww ch Premixing LCV gas with air inside the compressor of a gas turbine can s...