exergy


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exergy

(ˈɛksɜːdʒɪ)
n
the maximum amount of useful work that can be obtained from a system
References in periodicals archive ?
An electrochemical hydrogen compressor is a hydrogen compressor where hydrogen is supplied to the anode, and compressed hydrogen is collected at the cathode with an exergy efficiency up to and even beyond 80% for pressures up to 10,000 psi or 700 bars.
Some are the key players taken under coverage for this study are Siemens, GE, ABB, Amec Foster Wheeler, Ormat, MHI, Exergy, ElectraTherm, Durr Cyplan, GETEC, CNBM, DaLian East & E-Rational.
We are also planning a rich social programme including a welcoming reception, a gala dinner and a tour to the most spectacular attractions of Doha." He added, "High-quality papers will be considered, in extended form, for publication in the special issues of the following international journals: International Journal of Hydrogen Energy (Impact Factor -- 4.229), International Journal of Energy Research (Impact Factor -- 3.009), Environmental Science and Pollution Research (Impact Factor -- 2.800), Greenhouse Gases: Science and Technology (Impact Factor -- 1.991), International Journal of Exergy (Impact Factor -- 0.993), International Journal of Global Warming (Impact Factor -- 0.761)."
The exergetic efficiency can be defined as the ratio of the output exergy to the input exergy.
Using a mobile app, Exergy, residents with solar PV panels on their roof (so-called prosumers) can sell their excess solar PV energy to residents without solar PV panels who are connected to the microgrid.
LO3's Exergy platform underpins the data exchange that allow price signals and peer-to-peer transactions, while the eMotorWerks JuiceNet platform allows control over local energy flows, matching in real time and in small groups the local demand from EVs and households with the local supply of green, affordable energy.
Besides, recent studies have shown that the exergy approaches are well flexible tools in evaluating the sustainability level of energy systems in addition to material exchanges with the environment (Aydin 2013; Midilli, Kucuk, and Dincer 2012; Rosen, Dincer, and Kanoglu 2007; Thawonngamyingsakul and Kiatsiriroat 2012).
In order to propose a new and more equitable approach, an alternative indicator based on the second law of thermodynamics and particularly the exergy concept was proposed.
German conglomerate Siemens, which is also the technology supplier of the new market trading platform for WESM, has been advancing into this sphere - initially with Lo3 Energy in the United States, a trailblazing blockchain-enabled microgrid system in Brooklyn, in which transactions are done with what they term as "exergy," or energy token which takes the form of distributed ledgers with cryptographic security.
Their topics include wind assessment for micro wind turbines in an urban environment, an efficient energy management system at a Kuwait oil company, optimizing car life for minimum carbon dioxide emission, energy and exergy efficiencies of different configurations of ejector-based carbon dioxide refrigeration systems, and applications of low enthalpy geothermal energy: the case of the faculty of physical and mathematical sciences at the University of Chile.
One such TG steam turbine is analyzed in this paper from the aspect of exergy efficiency and exergy power losses (exergy destruction) during the increase in turbine developed power.