Results 41 to 50 of about 14,102 (219)

Thermodynamic efficiency and entropy production in the climate system [PDF]

open access: yes, 2009
We present an outlook on the climate system thermodynamics. First, we construct an equivalent Carnot engine with efficiency and frame the Lorenz energy cycle in a macroscale thermodynamic context.
Lucarini, Valerio
core   +2 more sources

Evaluation of the ejector two-stage compression refrigeration cycle with work performance from energy, conventional exergy and advanced exergy perspectives

open access: yesEnergy Reports, 2022
Low temperature cold chain is the top priority of logistics development at this stage. CO2 (carbon dioxide) refrigeration system is widely used. However, the low efficiency of CO2 refrigeration system is the biggest obstacle to its development.
Dazhang Yang   +4 more
doaj   +1 more source

A multi evaporator desalination system operated with thermocline energy for future sustainability [PDF]

open access: yes, 2018
All existing commercial seawater desalination processes, i.e. thermally-driven and membrane-based reverse osmosis (RO), are operated with universal performance ratios (UPR) varying up to 105, whilst the UPR for an ideal or thermodynamic limit (TL) of ...
Burhan, Muhammad   +3 more
core   +2 more sources

Thermodynamic analysis of a novel fossil-fuel–free energy storage system with a trans-critical carbon dioxide cycle and heat pump [PDF]

open access: yes, 2020
This paper presents and analyzes a novel fossil-fuel–free trans-critical energy storage system that uses CO2 as the working fluid in a closed loop shuttled between two saline aquifers or caverns at different depths: one a low-pressure reservoir and the ...
Hao, Y   +4 more
core   +1 more source

Panel I: Connecting 2nd Law Analysis with Economics, Ecology and Energy Policy [PDF]

open access: yes, 2014
The present paper is a review of several papers from the Proceedings of the Joint European Thermodynamics Conference, held in Brescia, Italy, 1–5 July 2013, namely papers introduced by their authors at Panel I of the conference.
Gaggioli, Richard, Reini, Mauro
core   +3 more sources

Low-Concentration Solar-Power Systems Based on Organic Rankine Cycles for Distributed-Scale Applications: Overview and Further Developments [PDF]

open access: yes, 2015
This paper is concerned with the emergence and development of low-to-medium-grade thermal-energy-conversion systems for distributed power generation based on thermo- dynamic vapor-phase heat-engine cycles undergone by organic working uids, namely ...
Markides, CN
core   +2 more sources

Advanced Thermodynamic Analysis and Evaluation of a Supercritical Power Plant

open access: yesEnergies, 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

Exergetic Effects of Cooled Cooling Air Technology on the Turbofan Engine during a Typical Mission

open access: yesEnergies, 2022
The cooled cooling air technology (CCA technology) shows expected performance in solving the growing thermal challenge for advanced aero engines by reducing the temperature of cooling air.
Laihe Zhuang   +5 more
doaj   +1 more source

Energetic and exergetic analysis of combined cycle power plant: Part-1 operation and performance [PDF]

open access: yes, 2015
Energetic and exergetic analyses are conducted using operating data for Sabiya, a combined cycle power plant (CCPP) with an advanced triple pressure reheat heat recovery steam generator (HRSG).
Al-Mutawa, Nawaf   +2 more
core   +2 more sources

Advanced exergy and exergo-economic analyses of an advanced adiabatic compressed air energy storage system

open access: yesJournal of Energy Storage, 2022
It is important to determine the source of the exergy destruction of the system components and their relations with each other in order to increase the working performance of energy charging systems. In this paper, con-ventional/advanced exergy and exergo-economic analyses of an advanced adiabatic compressed air energy storage (AA-CAES) system with a ...
Guleryuz, Esra Hancer, Ozen, Dilek Nur
openaire   +2 more sources

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