...Oskar Thulin; Olivier Petit; Carlos Xisto; Xin Zhao; Tomas Grönstedt An exergy framework was developed taking into consideration a detailed analysis of the heat exchanger (HEX) (intercooler (IC)) component irreversibilities. Moreover, it was further extended to include an adequate formulation...

... is the conventional recuperative (CR) cycle in which a heat exchanger is placed after the power turbine (PT). In the second configuration, referred as alternative recuperative (AR) cycle, a heat exchanger is placed between the high pressure and the PT, while in the third configuration, referred as staged heat...

... December 5, 2016; published online February 23, 2017. Editor: David Wisler. 08 10 2016 05 12 2016 Gas turbine technology Heat exchangers Internal combustion engines It was stated in Ref. [ 1 ] that internal combustion engines can rarely achieve efficiency higher than 42...

...Xin Zhao; Mikhail Tokarev; Erwin Adi Hartono; Valery Chernoray; Tomas Grönstedt Porous media model computational fluid dynamics (CFD) is a valuable approach allowing an entire heat exchanger system, including the interactions with its associated installation ducts, to be studied at an affordable...

...; published online August 16, 2016. Editor: David Wisler. 02 06 2016 27 06 2016 Energy Energy conversion Energy systems Fossil Gas turbine technology Heat exchangers Heat recovery Modeling Power Power systems Reliability Thermal Nuclear power generation Control systems Co...

.... 12 11 2015 09 05 2016 Heat exchangers Turbines Combined heat and power (CHP) systems are an attractive distributed generation (DG) solution offering high (>80%) efficiency and flexible operation. Waste heat from a small gas turbine can be used for process heat, steam...

... , A. , and Sjunnesson , A. , 2003 , “ Heat Exchanger Weight and Efficiency Impact on Jet Engine Transport Applications ,” 16th International Symposium on Air Breathing Engines, Cleveland, OH, Aug. 31–Sept. 5, Paper No. ISABE-2003-1122. [7] Kwan , P. W. , Gillespie , D. R. H. , Stieger , R. D...

...A. Reza Razmavar; M. Reza Malayeri Nitrogen oxides (NO x ) emissions from diesel engines can profoundly be suppressed if a portion of exhaust gases is cooled through a heat exchanger known as exhaust gas recirculation (EGR) cooler and returned to the intake of the combustion chamber. One major...

... (TEM) RC configurations, modeled after the Airbus Helicopters Bo105 and Aérospatiale SA330 models, simulated under the representative mission scenarios. The installed engines corresponding to both reference RC are notionally modified by incorporating a heat exchanger (HE), enabling heat transfer...

.... , Hormozi , F. , and Zamzamian , A. , 2014 , “ Role of Channel Shape on Performance of Plate-Fin Heat Exchangers: Experimental Assessment ,” Int. J. Therm. Sci. , 79 , pp. 183 – 193 . 10.1016/j.ijthermalsci.2014.01.004 [4] Gunnasegaran , P. , Shuaib , N. H. , Abdul Jalal , M. F...

... can be achieved at a low cost. A methodology for the optimal sizing and design of the system is proposed, based on the optimization of both continuous parameters such as heat exchanger size or discrete variables such as working fluid. The methodology is based on yearly simulations, aimed at optimizing...

... . Manuscript received July 13, 2015; final manuscript received July 15, 2015; published online August 4, 2015. Editor: David Wisler. 13 07 2015 15 07 2015 Aeronautical propulsion Aerospace applications Engines Heat exchangers Aerospace...

..., three-dimensional operations and toward the realization of their associated design trade-offs at mission level. Aeronautical propulsion Engines Environmental Gas turbine technology Heat exchangers Aerospace Propulsion systems The acquisition of a robust and cost-effective product...

... the regenerative engine weight and fuel efficiency remains to be one of the “development dilemma” for the engine designers, primarily due to their concerns associated with the weight penalty arising from the incorporation of the heat exchanger(s) [ 5 – 7 ]. Therefore, in order to systematically quantify...

..., in the area of recuperation, MTU Aero Engines has been driving research activities in the last decade. This concept is based on the use of a system of heat exchangers (HEXs) mounted inside the hot-gas exhaust nozzle (recuperator). Through the operation of the system of HEXs, the heat from the exhaust gas...

... larger engine sizes. Energy systems Aerospace Aerospace applications Design optimization Energy Engines Environmental Gas turbine technology Heat exchangers Modeling Power systems Thermodynamics Propulsion systems Recognition of the environmental impact of the growth in civil...

... stress-state models (QPSSM) of a rotor and a casing for the initial temperature and dynamic heating. The unique feature of the QPSSM of GTEs is separate equation sets, which allow the heat exchange between structure elements and the gas (air) and the displacements of the turbine rotor and the casing...

... Plant Condenser Tube Arrangement ,” Appl. Therm. Eng. , 40 , pp. 294 – 303 . 10.1016/j.applthermaleng.2012.02.028 [7] Heat Exchange Institute, 2006 , Standards for Steam Surface Condensers , 10th ed. , Heat Exchange Institute Inc. , Cleveland, OH . [8] Pearce , R. E. , 2005...

...Ting Ma; Min Zeng; Yanpeng Ji; Qiuwang Wang In this paper, the gas-side fluid flow distribution inside a bayonet tube heat exchanger with inner and outer fins is numerically studied. The heat exchanger is designed based on the traditional bayonet tube heat exchanger, where compact continuous plain...

... , H. , and Prieels , L. , 2002 , “ The ACTE Spiral Recuperator for Gas Turbine Engines ,” ASME Paper No. GT-2002-30405. Wilson , D. G. , 2003 , “ Regenerative Heat Exchangers for Microturbines, and an Improved Type ,” ASME Paper No. GT2003-38871. Treece , B. , Vessa , P...