Results 71 to 80 of about 4,154 (188)

Exergy Efficiency of Interplanetary Transfer Vehicles [PDF]

, 2019
In order to optimize systems, systems engineers require some sort of measure with which to compare vastly different system components. One such measure is system exergy, or the usable system work. Exergy balance analysis models provide a comparison of different system configurations, allowing systems engineers to compare different systems configuration
Sean T. Owen, Michael D. Watson, Mitchell A. Rodriguez   +2 more
openaire   +1 more source

MHD Heat Transfer Enhancement in TiO2‐Fe3O4/Water Hybrid Nanofluid Over a Porous Stretching/Shrinking Surface With Suction/Injection and Heat Source Effects

Engineering Reports, Volume 8, Issue 8, August 2026.
Magnetohydrodynamic flow of TiO2‐Fe3O4/water hybrid nanofluid over a porous stretching/shrinking surface enhances heat transfer under Joule heating and radiation effects. Thermal performance improves with nanoparticle concentration and Eckert number, while suction reduces heat transport, highlighting its potential for advanced industrial cooling ...
K. Govardhan, S. Renuka, V. Meenakshi, G. Narender   +3 more
wiley   +1 more source

Exergy Analysis of a Pilot Parabolic Solar Dish-Stirling System

Entropy, 2017
Energy and exergy analyses were carried out for a pilot parabolic solar dish-Stirling System. The system was set up at a site at Kerman City, located in a sunny desert area of Iran.
Ehsan Gholamalizadeh, Jae Dong Chung
doaj   +1 more source

Design and Dynamic Response Characteristics Analysis of Hydrogen Fuel Cell Ship Combined Cooling and Power Supply System

Engineering Reports, Volume 8, Issue 8, August 2026.
An integrated hybrid energy storage and cogeneration system with CE‐DPS effectively stabilizes DC bus voltage in hydrogen fuel cell marine vessels. The proposed multi‐tier control suppresses voltage fluctuations, eliminates overshoot, and improves energy efficiency, achieving 68% exergy efficiency and 15.6% fuel savings.
Jingsi Hu, Feng Chen, Zhaoliang Zang
wiley   +1 more source

Environmental Thermoeconomic Performance Analysis of Gas Steam Combined Cycle With Different Inlet Air Cooling Technologies

Energy Science &Engineering, Volume 14, Issue 8, Page 3638-3655, August 2026.
This study establishes an environmental thermoeconomic cost model to investigate the impact of two IAC technologies on the performance of a GSCC from three aspects of energy, economy, and environment. Under arid climate conditions, the SEC technology demonstrates superior performance in terms of cost‐effectiveness and environmental impact.
Zhen Wang, Li Zhang, Yu Ni, Liqiang Duan
wiley   +1 more source

Comparative Performance Analysis of Various Flat Plate Solar Collectors Incorporating Spiral and Square Arrangement of Circular Type Riser Tube

Energy Science &Engineering, Volume 14, Issue 8, Page 3828-3847, August 2026.
Three flat‐plate collectors with spiral and square coiled riser tubes were tested and it was found that the spiral type provides the best results with a thermal efficiency of 66.98% for a mass flow rate of 0.4 kg/min. Riser tube geometry is a key factor in optimizing flat‐plate collector output.
Sakhail Islam Biaz, Golam Sharoar Fahim, Md Akib Ul Islam, Nahyan Ahnaf Pratik, Md. Hasan Ali   +4 more
wiley   +1 more source

Experimental Thermal Performance Investigation of Nontracking Multiple Parabolic Trough Collector With a Single Absorber

Energy Science &Engineering, Volume 14, Issue 8, Page 3584-3607, August 2026.
With a mass flow rate of 0.3 kg/min, a direct solar radiation of 770.25 W/m2, and a global solar radiation of 915.25 W/m2, the maximum outlet water temperature was 63.3°C, the maximum instantaneous efficiency was 51.78%, and the average heat gain was found between 69.81 and 206.88 W, depending on mass flow rate and direct solar radiation.
Md. Akib Ul Islam, Golam Sharoar Fahim, Maruf Amin Sabbir, Nahyan Ahnaf Pratik, Md. Mahmodul Alam, Md. Hasan Ali   +5 more
wiley   +1 more source

Comprehensive Experimental Investigation of Rosehip (Rosa canina L.) Seed Oil as a Novel Biodiesel Feedstock: Engine Performance, Combustion, Emission, and Exergy Analyses

Global Challenges, Volume 10, Issue 8, August 2026.
Rosehip seed oil is converted into biodiesel (Rosehip Seed Oil Methyl Ester‐RSOME) and experimentally evaluated in a diesel engine. Comprehensive analyses of engine performance, emissions, combustion characteristics, and exergy reveal the effects of RSOME blends on engine behavior, providing insights into the utilization of this novel biodiesel ...
Erdoğan Güner
wiley   +1 more source

Exergy costing analysis and performance evaluation of selected gas turbine power plants

Cogent Engineering, 2015
In this study, exergy costing analysis and performance evaluation of selected gas turbine power plants in Nigeria are carried out. The results of exergy analysis confirmed that the combustion chamber is the most exergy destructive component compared to ...
S.O. Oyedepo, R.O. Fagbenle, S.S. Adefila, Md.Mahbub Alam   +3 more
doaj   +1 more source

Experimental and support vector machine predictions of entropy generations and exergy efficiency of Fe₃O₄-SiO₂/Water hybrid nanofluid in a plate heat exchanger. [PDF]

Heliyon, 2023
Alklaibi AM, Chandra Mouli KVV, Syam Sundar L.   +2 more
europepmc   +1 more source