Abstract According to the regulation of European Union laws in 2014, it was inevitable switch low global warming potential (GWP) fluids refrigeration systems where R404A working fluid is currently used. The GWP very high, and for ozone depletion zero. In this study, energetic exergetic performance assessment a theoretical system carried out R404 refrigerant its alternatives, comparatively. anal...

introduction: the major target of this paper shows effect of selected decision variables in the steam system foroptimization of thermal combined cycle power plant.material and method: exergoeconomic, and other similar terms used to imply the combined thermodynamicand economic analysis of energy systems, which helps to increase the efficiency of a plant without jeopardizingits economic viability...

The goal of this paper is to evaluate cryogenics-based energy storage concepts: A thermo-electric energy storage unit, which uses surplus electricity while liquefying a gas, subsequently stored at cryogenic temperature. Here we review and evaluate concepts for power generation while regasifying the liquefied gas (cryogen) using an exergetic analysis. Two cold exergy recovery cycle configuration...

TED is a program that “invents” conceptual schematics of optimized thermal systems. TED is based on the view that innovative design can be modeled as a search process and uses elements of the search algorithms that originated in the field of Artificial Intelligence. The search is guided by a special form of exergetic analysis. The theory behind the TED is discussed in details elsewhere. This pa...

The mathematical model to predict the performance and the exergetic efficiency in a multi-effect desalination system with thermal vapor compression (MED-TVC system) has been presented. The energy and the concentration conservation law were developed for each effect, considering the boiling point elevation and the various thermodynamic losses by developing the mathematical models. These analyses...

This paper aims to give a comprehensive energetic-exergetic performance analysis on the impacts of injecting-submillimeter air bubbles into both sides cold and hot water streams before entrance port corrugated plate heat exchanger (C-PHE) having ten plates within counterflow configuration. Hence, optimize energy exergy effectiveness at different operating conditions for counter parallel fluid f...

the purpose of this research is to investigate thermoeconomic optimization and exergy analysis of transcritical co2 refrigeration cycle with an ejector. after modeling thermodynamic equations of elements and considering optimization parameters of emerging temperature of gas of cooler (tgc) , emerging pressure of cooler's gas (pgc) , and evaporative temperature (tevp) , optimization of targ...

iran’s vast common natural gas resources and the necessity to extract and export it as liquefied natural gas (lng) to distances more than 3000km opens a lucrative field for researchers to optimize lng cycles. in this article heat integration in cryogenic cycles by determining interacycle partition temperature and optimizing refrigeration features like subcooler, presaturator, aftercooler, reboi...

The most promising direction of CHP modernization is the introduction power units on supercritical steam parameters. Increasing parameters one effective ways to increase efficiency a plant. Thus, development concept thermal schemes turbines for parameters, taking into account characteristics their operation at existing Ukraine an actual scientific problem. solution this problem will make it pos...