Results 71 to 80 of about 22,031,897 (220)
Energy Science &Engineering, EarlyView.Glazed transpired solar collectors achieve 48–75% efficiency and 11% more seasonal heat than unglazed designs by cutting convective losses, while both offer complementary benefits for ventilation preheating and dynamic wall insulation, with paybacks of 5.5–6.8 years.
Mohammad Fawaier +7 more
wiley +1 more source
Advanced Thermodynamic Analysis and Evaluation of a Supercritical Power Plant
Energies, 2012 A conventional exergy analysis can highlight the main components having high thermodynamic inefficiencies, but cannot consider the interactions among components or the true potential for the improvement of each component.
George Tsatsaronis +3 more
doaj +1 more source
Sustainable Development, EarlyView.ABSTRACT Sustainability represents a complex issue in which scientific knowledge inevitably coexists with the subjective perception of humans in its turn influenced by civilization, cultural but also unconscious aspects. These results emerge with evidence from a critical analysis of the main definitions of sustainability delivered by credited entities (
Francesco Di Maria, Hamid Safarzadeh
wiley +1 more source
Using Exergy Analysis Methodology to Assess the Heating Efficiency of an Electric Heat Pump [PDF]
, 2006 The authors, using exergy analysis methodology, propose that it should consider not only the COP (coefficient of Performance) value of the electric power heat pump set (EPHPS/or HP set), but also the exergy loss at the heating exchanger of the HP set to ...
Duanmu, L., Shen, S., Ao, Y.
core
, 2008 In this study, exergy (availability) analysis of a Spark Ignition (SI) engine has been performed theoretically during compression, combustion and expansion processes of the engine cycle.
Bilgin, Atilla, Sezer, İsmet
core +1 more source
Exergy analysis and optimisation of a hybrid solar-geothermal power plant
, 2023 The present study aims at the energy, exergetic, exergoeconomic, exergoenvironmental analysis of a hybrid solar-geothermal power plant. In addition, the emergy-based approach based on exergoeconomic and exergoenvironmental analysis has been performed ...
Ana M. Blanco Marigorta +5 more
core +1 more source
Safety Science and Technology, EarlyView.This review systematically covers the full CO₂ flue gas membrane separation chain, finding it cuts energy use by ∼30% versus amine methods, yet faces stability and cost hurdles for large‐scale application. ABSTRACT As global climate change becomes increasingly severe, carbon capture, utilization, and storage (CCUS) technologies have emerged as a ...
Liang Jinqiang +8 more
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 +6 more
core +1 more source
EnergiesThe objective of this work is to present sustainability analysis and performance evaluation of six hydropower units through exergy-based indices. The method of exergy analysis, based on the first and second laws of thermodynamics, was utilized to ...
Sharad Kumar Oli +2 more
doaj +1 more source
A New Numerical Approach for Exergy Targets and Losses Determination in Sub-Ambient Processes
Chemical Engineering Transactions, 2017 Sub-ambient processes such as a refrigeration system are a highly energy intensive area in chemical industries. Refrigeration systems require a high level of process cooling using a combination of compression and expansion operations.
M.N. Hamsani, P.Y. Liew, T.G. Walmsley
doaj +1 more source