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Long-term optimization of Egypt’s power sector: Policy implications

Mondal, Md. Alam Hossain; Ringler, Claudia; Al-Riffai, … - In: Energy 166 (2019), pp. 1063-1073

This paper presents an evaluation of energy supply strategies for Egypt’s power sector and identifies prospects to meet …

Persistent link: https://www.econbiz.de/10013327012

Multi-objective optimization of the HVAC (heating, ventilation, and air conditioning) system performance

Wei, Xiupeng; Kusiak, Andrew; Li, Mingyang; Tang, Fan; … - In: Energy 83 (2015) C, pp. 294-306

-objective optimization problem is constructed. The problem is solved with a modified particle swarm optimization algorithm producing control …

Persistent link: https://www.econbiz.de/10011264374

A rigorous simulation-based procedure for retrofitting an existing Egyptian refinery distillation unit

Gadalla, Mamdouh A.; Abdelaziz, Omar Y.; Kamel, Dina A.; … - In: Energy 83 (2015) C, pp. 756-765

The simulation of existing crude oil distillation processes is distinctive and difficult owing to its complex nature and interactions, including variable feedstocks, highly integrated processes, tight cuts specifications, and environmental limitations. This study introduces a systematic...

Persistent link: https://www.econbiz.de/10011264401

New efficiency charts for the optimum design of axial flow turbines for organic Rankine cycles

Da Lio, Luca; Manente, Giovanni; Lazzaretto, Andrea - In: Energy 77 (2014) C, pp. 447-459

Turbine efficiency plays a key role in the design optimization of ORCs (organic Rankine cycles) and should be properly … optimization procedure, without a check that it can be really achieved in the resulting working conditions. The peculiar properties … maps can be included in a general design optimization procedure of the ORC system to help select the optimum design point …

Persistent link: https://www.econbiz.de/10011077654

Comparison of the two-stage and traditional single-stage thermoelectric generator in recovering the waste heat of the high temperature exhaust gas of internal combustion engine

Sun, Xiuxiu; Liang, Xingyu; Shu, Gequn; Tian, Hua; Wei, … - In: Energy 77 (2014) C, pp. 489-498

Models of two-stage serial and parallel thermoelectric generators have been established in this paper. Low-temperature thermoelectric material bismuth telluride and medium-temperature skutterudite are employed in the models and the exhaust gas of internal combustion engine is used as heat...

Persistent link: https://www.econbiz.de/10011077679

Thermodynamic analysis of a biomass-fired Kalina cycle with regenerative heater

Cao, Liyan; Wang, Jiangfeng; Dai, Yiping - In: Energy 77 (2014) C, pp. 760-770

the effects of some key thermodynamic parameters on the system performance. Furthermore, a parametric optimization is … optimization result of the biomass-fired Kalina cycle with/without regenerative heater indicates the system is more efficient when …

Persistent link: https://www.econbiz.de/10011077687

Optimal modeling and forecasting of the energy consumption and production in China

Xiong, Ping-ping; Dang, Yao-guo; Yao, Tian-xiang; Wang, … - In: Energy 77 (2014) C, pp. 623-634

Energy is of fundamental importance to a nation's economy. Accurate prediction of the energy consumption and production in China can play a guiding role in making the energy consumption plan, and facilitate timely and effective decision making of energy policy. This article proposes a novel GM...

Persistent link: https://www.econbiz.de/10011077722

Sizing, selection, and comparison of heat exchangers considering the lowest saving-investment ratio corresponding to the area at the tag end of the heat exchanger

Teke, Ismail; Ağra, Özden; Demir, Hakan; Atayılmaz, … - In: Energy 78 (2014) C, pp. 114-121

A new method has been developed to determine the area of waste heat recovery heat exchangers considering the lowest saving-investment ratio corresponding to the area at the tag end of the heat exchanger. Applying this method to any existing heat exchanger, the saving-investment ratio performance...

Persistent link: https://www.econbiz.de/10011117589

Thermoeconomic analysis & optimization of the combined supercritical CO2 (carbon dioxide) recompression Brayton/organic Rankine cycle

Akbari, Ata D.; Mahmoudi, Seyed M.S. - In: Energy 78 (2014) C, pp. 501-512

Exergoeconomic analysis is reported for a new combined SCRB/ORC (supercritical CO2 recompression Brayton/organic Rankine cycle) in which the waste heat from SCRBC (supercritical CO2 recompression Brayton cycle) is utilized by an organic Rankine cycle (ORC) for generating electricity. The...

Persistent link: https://www.econbiz.de/10011117630

A flexible model for economic operational management of grid battery energy storage

Fares, Robert L.; Webber, Michael E. - In: Energy 78 (2014) C, pp. 768-776

model with an optimization program. First, we transform a behavioral circuit model designed to describe a variety of battery … the battery model with a GAMS (General Algebraic Modeling System) optimization program, which decides when the battery … management, so that the battery only operates when revenue exceeds cost. …

Persistent link: https://www.econbiz.de/10011117632