Results 81 to 90 of about 3,406,342 (222)

Long Term Trends in Resource Exergy Consumption and Useful Work Supplies in the UK, 1900-2000 [PDF]

Our aim is to explain historical economic growth in the UK economy by introducing an empirical measure for useful work derived from natural resource energy inputs into an augmented production function.
Benjamin Warr, Robert U Ayres, Heinz Schandl   +2 more
core  

Feasibility study of using industrial wind turbine in Manjil city by energy, exergy, economic and exergy destruction analysis

Journal of Applied Science and Engineering
The importance of producing clean energy without any pollutants, including carbon dioxide and nitrogen oxides, has increased due to climate changes caused by global warming. Wind turbine can produce clean energy. To use a wind turbine, the feasibility of
Xiaoyuan An, Qi Zhao, Xiaoli Li
doaj   +1 more source

The Energy and Exergy of Light with Application to Societal Exergy Analysis

Energies, 2020
Lighting provides an indispensable energy service, illumination. The field of societal exergy analysis considers light (and many other energy products) to be enablers of economic growth, and lighting contributes a non-negligible proportion of total ...
Matthew Kuperus Heun, Zeke Marshall, Emmanuel Aramendia, Paul E. Brockway   +3 more
doaj   +1 more source

Optimum exergy efficiency of solar collectors

International Journal of Energy Research, 1989
An optimum exergy efficiency is derived for flat-plate solar collectors as a ratio of exergy delivery of the collector to the maximum output exergy obtainable. It is a function of the optimum mass flow rate through the collector, which itself is obtained through an optimization of the exergy delivery of the collector.
A. K. Kar, M. Shaahid
openaire   +1 more source

Gradient‐Based Optimization Modeling of Total Entropy and Heat Transfer in Exothermic Blood Analog Gold Nanoparticle Suspension

Engineering Reports, Volume 8, Issue 9, September 2026.
This study develops a gradient‐based multi‐start Nelder–Mead optimization framework for Casson‐micropolar blood‐analog nanofluid flow with gold nanoparticles in a convectively heated, exothermic microchannel, motivated by photothermal drug delivery. Spectral collocation solves coupled momentum, microrotation, and energy equations, from which entropy ...
Mojeed T. Akolade, Mathew F. Oyedotun, Michael O. Oni, Yusuf O. Tijani, Adeshina T. Adeosun, T. Sathiyaraj, Abiodun O. Ajibade, Mohamed M. Awad   +7 more
wiley   +1 more source

Exergy Analysis of Steam Pressure Reduction Valve in Marine Propulsion Plant on Conventional LNG Carrier

Naše More (Dubrovnik), 2018
Paper has presented an exergy analysis of steam pressure reduction valve, unavoidable element in the steam propulsion plant on LNG carrier. The steam pressure reduction valve was analyzed in a wide range of steam system loads.
Vedran Mrzljak, Igor Poljak, Božica Žarković   +2 more
doaj   +1 more source

Selecting Between Hydrogen and Methanol for Fuel Cell‐Organic Rankine Cycle Hybrid Power Systems: A Comparative 4E Analysis

Energy Science &Engineering, Volume 14, Issue 9, Page 4248-4260, September 2026.
A 4E comparison of PEMFC‐ORC and DMFC‐ORC systems shows that PEMFC‐ORC achieves 21% higher energy efficiency, while DMFC‐ORC obtains 31% higher exergy efficiency and 57% lower levelized cost of electricity. However, DMFC‐ORC emits nearly twice the annual carbon dioxide equivalent of PEMFC‐ORC.
Zahra Piryaei, Maryam Karami, Iman Khazaee   +2 more
wiley   +1 more source

Techno‐Economic Analysis and Multi‐Objective Optimization of a Novel Combined Cooling and Power System Driven by Geothermal Source and Waste Heat From Data Center

Energy Science &Engineering, Volume 14, Issue 9, Page 4300-4315, September 2026.
A novel combined cooling and power generation system is proposed by integrating organic Rankine cycle (ORC) with an absorption heat transformer, which is driven by combining geothermal energy and data center's waste heat. The system using R601a yielded the best overall performance, achieving an exergy efficiency of 40.34% and an annual cost of 130.29 k$
Zerui Chen, Xin Wu, Zhukui Tan, Jian Xiao, Nan Wang   +4 more
wiley   +1 more source

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

Influence of Structural and Environmental Parameters on Solar Air Collector Performance

Energy Science &Engineering, Volume 14, Issue 9, Page 4409-4421, September 2026.
Increasing air gap depth and mass flow rate significantly enhances the thermal performance of solar air collectors, with optimal performance achieved at an 8.5 cm air gap and 0.01318 kg/s mass flow rate. Air gap depth is identified as the dominant factor influencing system efficiency.
Quankun Zhu, István Farkas, János Buzas   +2 more
wiley   +1 more source