...Ahmad Ayache; Madjid Birouk Biogas is a renewable source of energy produced by anaerobic digestion of organic material and composed mainly of methane (CH 4 ) and carbon dioxide ( C O 2 ) . Despite its lower heating value, biogas can still replace fossil fuels in several engineering stationary power...

... h ρ g ϵ σ ( T W 4 − T R 4 ) S V = r e q u i r e d r e s i d e n c e t i m e f o r c o n v e r s i o n o f f e e d s t o c k t o s y n g a s Estimates have also been made of different power...

...Y. Haseli; K. Hornbostel Maximum thermal efficiency is commonly assumed to correspond to minimum entropy generation. However, previous work has disproven this assumption for various power generation systems. In order to reconcile these two optimization approaches, second law analysis is performed...

... conversion Energy systems analysis Fuel combustion Hydrogen energy Power Energy systems Co- generation In recent years, with the rapid development of portable electromechanical system, the conventional electrochemical batteries could no longer meet the power requirement. The microcombustion...

...Ahmed Abdel Rahman; Esmail M. A. Mokheimer Cooling the air before entering the compressor of a gas turbine of combined cycle power plants is an effective method to boost the output power of the combined cycles in hot regions. This paper presents a comparative analysis for the effect of different...

... Energy systems analysis Power Energy systems Co- generation Fig. 4 Meshed domain: ( a ) surface polyhedral cells, ( b ) section volume mesh, and ( c ) boundary prism layers and finer mesh at jet inlet Boundary conditions were defined by the axial velocity ( V z...

... OF E NERGY R ESOURCES T ECHNOLOGY . Manuscript received January 4, 2018; final manuscript received April 7, 2018; published online May 7, 2018. Assoc. Editor: Abel Hernandez-Guerrero. 04 01 2018 07 04 2018 Energy conversion Energy systems analysis Power Energy systems Co...

.... The integrated plant is then applied to a case study to satisfy the energy needs of a user of the tertiary sector. Therefore, based on this, the procedure continues with sizing the cooling section for the cooling power delivery in the warm season, the batteries to store the electric energy to be delivered...

... can be enhanced by using the TEG. The percentage increment of the maximum power output density is larger than that of the maximum efficiency. There are optimally working regions of the converter voltage, dimensionless current, and band gap energy. The elevated emitter temperature results...

...Gokmen Demirkaya; Ricardo Vasquez Padilla; Armando Fontalvo; Antonio Bula; D. Yogi Goswami The Goswami cycle is a cycle that combines an ammonia–water vapor absorption cycle and a Rankine cycle for cooling and mechanical power purposes by using thermal heat sources such as solar energy...

... demand, which is nowadays a top challenge for coal-fired power plants. The first indicator of combustion inefficiency is flame stability, which can be observed as variation of flame intensity. Nowadays, there are no validated measuring methods dedicated for industrial usage, which are able to give...

... technology Power Co- generation The work is aimed at studying the turbulent flames fueled by hydrogen/methane mixtures. The study is motivated by the present trends in the energy production industry, demanding the use of higher efficiency, less polluting fuels, and in the same time, a reduction...

.... The energy and exergy efficiencies of the overall system are defined and obtained as 7.0% and 8.6%, respectively. WTES plants with combined molten salt energy storage application can run continuously, and can provide electrical power for both on-grid and off-grid systems. By converting the wind power...

... the profit margin of cogeneration units and increases the necessity of flexible operation to avoid electricity production when spot prices drop below marginal costs. In this work, a 100 MWel combined-cycle (CC) power plant supplying heat and power to a paper mill is investigated. Currently, the plant...

... energy efficiency of the cycle not greater than 40–45% in comparison to 55–60% of modern conventional power plants fueled by natural gas or coal. A significant increase of energy efficiency of HTGR cycles can be achieved with the increase of helium temperature from the nuclear reactor using additional...

... 13, 2016; final manuscript received November 7, 2017; published online December 22, 2017. Assoc. Editor: Wojciech Stanek. 13 12 2016 07 11 2017 Emissions Energy conversion Energy systems analysis Power Energy systems Fossil fuel Combustion Co- generation...

... online December 22, 2017. Editor: Hameed Metghalchi. 22 08 2017 18 10 2017 Energy conversion Energy systems analysis Power Energy systems Co- generation Centrifugal compressors have significant advantages for gas compression with low flow coefficient and high-pressure...

... Energy conversion Fuel combustion Natural gas technology Power Energy systems Co- generation To investigate the phenomenon of reversal of combustion phasing when injection timing is varied at very small diesel fractions (cf., Fig. 5 ), three representative operating points with 1.5% diesel...

...Eike Mollenhauer; Andreas Christidis; George Tsatsaronis Combined heat and power (CHP) plants are efficient regarding fuel, costs, and emissions compared to the separate generation of heat and electricity. Sinking revenues from sales of electricity due to sinking market prices endanger...

...Marcin Szega; Piotr Żymełka This paper presents the approach of thermoeconomic analysis of centralized cold generation in trigeneration system integrated with steam-powered absorption chillers (ACs). The analysis was conducted for real back-pressure combined heat and power (CHP) unit BC-50...