Results 251 to 260 of about 4,653,935 (318)

Numerical study of heat transfer, exergy efficiency, and friction factor with nanofluids in a plate heat exchanger

Journal of Thermal Analysis and Calorimetry, 2023
S. Marzouk, Ahmad Aljabr, F. Almehmadi, Saeed Alqaed, M. A. Sharaf   +4 more
semanticscholar   +1 more source

Regional and global exergy and energy efficiencies

Energy, 1996
We present estimates of global energy efficiency by applying second-law (exergy) analysis to regional and global energy balances. We use a uniform analysis of national and regional energy balances and aggregate these balances first for three main economic regions and subsequently into world totals. The procedure involves assessment of energy and exergy
Nakicenovic, N., Gilli, P.V., Kurz, R.
openaire   +2 more sources

Multi-objective planning of regional integrated energy system aiming at exergy efficiency and economy

Applied Energy, 2022
Yongli Wang, Feifei Huang, Siyi Tao, Yang Ma, Yuze Ma, Lin Liu, Fugui Dong   +6 more
semanticscholar   +1 more source

Exergy efficiency graphs for thermal power plants

Energy, 2015
Despite the strong support for exergy in thermodynamics, the industry still relies on energy based power plant efficiencies. The paper exposes errors with energy based efficiencies and improves the graphical representation of plants efficiencies. Among others, energy efficiencies cannot recognised that Combined Heat and Power (CHP) plant may be less ...
J. Taillon, R.E. Blanchard
openaire   +1 more source

Exergy efficiency of a novel heat exchanger under MHD effects filled with water-based Cu–SiO2-MWCNT ternary hybrid nanofluid based on empirical data

Journal of Thermal Analysis and Calorimetry, 2021
Amin Dezfulizadeh, A. Aghaei, Ali Hassani Joshaghani, M. M. Najafizadeh   +3 more
semanticscholar   +1 more source

Efficient cryogenic nitrogen generators: An exergy analysis

Gas Separation & Purification, 1991
Abstract Through exergy analysis, inefficiencies were identified in the distillation system for an efficient cryogenic air separation plant producing large-tonnage quantities of nitrogen. Both exergy losses and carefully chosen exergy efficiencies were used for analysing this process.
R. Agrawal, D.W. Woodward
openaire   +1 more source

Exergy efficiency calculation of energy intensive systems

Exergy, An International Journal, 2002
Abstract An innovative method for the exergy efficiency calculation of a complex energy-intensive system with arbitrary structures is described in this paper. The method is based on a novel general equation to calculate the total system exergy efficiency, and on an exergy flow graph proposed by the authors.
V. Nikulshin, C. Wu, V. Nikulshina
openaire   +1 more source

A comparative energy and exergy efficiency study of hemispherical and single-slope solar stills

Environmental science and pollution research international, 2021
M. Attia, A. Kabeel, A. Bellila, A. Manokar, R. Sathyamurthy, Z. Driss, Suresh Muthusamy   +6 more
semanticscholar   +1 more source

Optimal Operation of Regional Integrated Energy System Considering Integrated Demand Response and Exergy Efficiency

Journal of Electrical Engineering and Technology, 2022
Junchang Wang, Haijun Xing, Huaxin Wang, Baojiang Xie, Yangfan Luo   +4 more
semanticscholar   +1 more source

Numerical evaluation of exergy efficiency of innovative turbulators in solar collector filled with hybrid nanofluid

Journal of Thermal Analysis and Calorimetry, 2021
Muhammad Ibrahim, A. Berrouk, E. A. Algehyne, T. Saeed, Yu-Ming Chu   +4 more
semanticscholar   +1 more source