Results 81 to 90 of about 5,660,686 (214)

Energy and exergy efficiencies of a solar box-cooker

, 2004
A simple and low-cost box-type solar cooker (SBÇ) was designed and tested. The energy and exergy efficiencies of the SBÇ were experimentally evaluated. The energy output of the SBÇ ranges from 2.1 to 61.7 kJ, whereas the exergy output ranges from 0.4 to ...
Öztürk H.H.
core   +1 more source

Exergetic and exergo-economic assessment of orange juice pasteurization unit

Discover Applied Sciences
Pasteurization of orange juice is a critical food safety measure commonly achieved through heat treatment of the same at 92 °C for 20 s so as to secure microbial inactivation to provide better shelf life. Pasteurization, being an energy intensive process,
Munish Kumar, Gurjeet Singh, S. K. Mangal, Sumit Taneja   +3 more
doaj   +1 more source

Study on Corrosion and Thermal Alteration of MgAl2O4 and MgO Ceramics With Lead at 750 °C for Use in High‐Temperature Thermal Energy Storage

Energy Technology, Volume 14, Issue 10, October 2026.
The chemical compatibility of five commercial ceramics with varying MgO and Al2O3 content is studied in contact with liquid lead (Pb) at 700 °C for potential use in high‐temperature Pb‐based thermal energy storage. After 1008 h of static exposure, the samples are analyzed using a scanning electron microscope coupled with energy‐dispersive spectroscopy ...
Margaux Zehnder, Anisa Purwitasari, Annette Heinzel, Klarissa Niedermeier   +3 more
wiley   +1 more source

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  

Evaluating Copper Smelting Flue Gas Waste Heat Recovery Efficiency: A Game Theory-Based Combined Weighting Approach

Energies
The efficient and optimized operation of copper smelting processes is comprehensively governed by process flow characteristics and energy efficiency.
Ruiming Gu, Congwei Tang, Haochen Huang, Ge Deng, Cheng Tan, Jianhang Hu, Jinlong Du, Hua Wang   +7 more
doaj   +1 more source

Effects of Camber of S‐Series Airfoils on Aerodynamic Performance, Entropy Generation Rate, Irreversibility, and Second Law Efficiency of Horizontal Axis Wind Turbines

Energy Science &Engineering, Volume 14, Issue 10, Page 4789-4809, October 2026.
Due to the depletion of fossil fuels, enhancing wind turbine efficiency is crucial. Utilizing airfoils with high lift‐to‐drag ratios significantly improves power generation by optimizing aerodynamic parameters. Furthermore, entropy generation analysis serves as an effective method for design optimization by minimizing energy losses and exergy ...
Mitra Yadegari
wiley   +1 more source

Exergy analysis of a turbofan aircraft engine

, 2009
An exergy analysis is reported for a General Electric turbofan engine (the CF6-80) using sea-level data. The effects on exergy efficiencies and exergy destructions are investigated of modifying the isentropic efficiencies of turbomachinery components ...
Karakoç, Tahir Hikmet, Turgut, Enis Turhan, Karakoc, T. Hikmet, Rosen, Marc A., Hepbaşlı, Arif, Turgut, Enis T., Hepbasli, Arif, Enis T. Turgut, Marc A. Rosen, Arif Hepbaşlı, T. Hikmet Karakoç   +10 more
core   +1 more source

Effects of operational control conditions on the seasonal energy storage performance of borehole thermal energy storage (BTES) system

Case Studies in Thermal Engineering
To explore the effects of operation control conditions on the seasonal energy storage performance of borehole thermal energy storage (BTES) system, a three-dimensional model of the BTES is built and validated by experiments.
Weibo Yang, Wenxin Xia, Yu Zhang, Feng Wang   +3 more
doaj   +1 more source

Exergy‐Based Performance Analysis and Optimization of Autonomous Fuel Cell‐Based Energy Systems With Solid Oxide and Proton Exchange Membrane Fuel Cells Fed by Biogas of Variable Composition

Fuel Cells, Volume 26, Issue 5, October 2026.
ABSTRACT This study presents a unified thermodynamic and exergy‐based assessment of autonomous fuel cell energy systems operating on biogas with varying compositions. Two alternative configurations—a solid oxide fuel cell (SOFC)‐based system and a proton exchange membrane fuel cell (PEMFC)‐based system—were evaluated using a common balance‐of‐plant ...
Evangelos Tsiaras, Dennis Mytakis, Frank A. Coutelieris   +2 more
wiley   +1 more source

Thermo-fluid characteristics and exergy analysis of a twisted tube helical coil

Scientific Reports
Abstract In the present investigation, the exergy of an innovative technique involving the integration of curved helical tubes with twisted passages was experimentally presented. This technique aims to improve the thermofluid characteristics by involving the swirl intensity of fluid flow in a twisted tube helical coil (TTHC).
openaire   +3 more sources