Results 11 to 20 of about 205 (173)

Experiment and Criterion of Incomplete Condensation of Zeotropic Mixtures

Zhileng xuebao, 2007
Incomplete condensation may occur for zeotropicmixtures used. Experiments for two zeotropic mixtures were conducted and the variation of heating capacity and COP with the increase of water flow rate in a condenser was obtained to confirm the possibility ...
Zhu Yu, Zhao Li, Gao Pan
doaj   +3 more sources

Properties of the matrix of relative volatilities of multicomponent zeotropic and azeotropic mixtures

Тонкие химические технологии, 2011
Using definitions, concepts and the mathematical apparatus of linear algebra the basic regularities including the condition of azeotropy for the matrix of relative volatilities are considered in the paper.
K. Yu. Tarkhov, L. A. Serafimov
doaj   +1 more source

Effect of critical temperature and category of zeotropic mixture working fluids on the thermal performance in subcritical ORC

International Journal of Thermofluids, 2023
Several thermodynamic properties are crucial in selecting the optimal working fluids and significantly affect the performance of the Organic Rankine cycle (ORC); one of them is the liquid-vapor critical temperature.
Aram M. Ahmed, Attila R. Imre
doaj   +1 more source

Multi-Objective Optimization of Organic Rankine Cycle Power Plants Using Pure and Mixed Working Fluids

Energies, 2016
For zeotropic mixtures, the temperature varies during phase change, which is opposed to the isothermal phase change of pure fluids. The use of such mixtures as working fluids in organic Rankine cycle power plants enables a minimization of the mean ...
Jesper G. Andreasen, Martin R. Kærn, Leonardo Pierobon, Ulrik Larsen, Fredrik Haglind   +4 more
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Assessment of Methods for Performance Comparison of Pure and Zeotropic Working Fluids for Organic Rankine Cycle Power Systems

Energies, 2019
In this paper, we present an assessment of methods for estimating and comparing the thermodynamic performance of working fluids for organic Rankine cycle power systems.
Jesper Graa Andreasen, Martin Ryhl Kærn, Fredrik Haglind   +2 more
doaj   +1 more source

Performance Analysis of ORC System for Non-Zeotropic Mixtures Under Different Solar Energy Sources

发电技术, 2018
The characteristic of working fluids is one of the important factors that affect organic Rankine cycle (ORC) system.Under the different heat source temperature, 11 substances were adopted as the subcritical ORC working fluids, R245fa and R601, as well as
Yujiong GU, Limin CHEN, Zhi GENG
doaj   +1 more source

Energy and Conventional and Advanced Exergy Analyses of Low-Temperature Geothermal Binary-Flashing Cycle Using Zeotropic Mixtures

Energies, 2022
Due to its deep utilization of geobrine and its high net power output, the binary-flashing cycle (BFC) is deemed to be the future geothermal energy power generation technology.
Yuan Zhao, Bowen Du, Shunyi Chen, Jun Zhao, Zhipeng Guo, Lingbao Wang   +5 more
doaj   +1 more source

Performance of binary zeotropic mixtures in organic Rankine cycles (ORCs)

Energy Conversion and Management, 2022
Performance of binary zeotropic mixtures in organic Rankine cycles (ORCs)
Shahrooz, Mina, Lundqvist, Per, Nekså, Petter   +2 more
openaire   +2 more sources

Regression Model of Dynamic Pulse Instabilities during Condensation of Zeotropic and Azeotropic Refrigerant Mixtures R404A, R448A and R507A in Minichannels

Energies, 2022
This paper presents experimental research and mathematical modeling data concerning the impact of unit dynamic instabilities on the phase-transition condensation processes of the zeotropic mixtures R404A and R448A and azeotropic R507A refrigerants in ...
Waldemar Kuczyński, Marcin Kruzel, Katarzyna Chliszcz   +2 more
doaj   +1 more source

Techno-economic feasibility of CO2 utilization in sustainable energy harvesting: Energy–Exergy–Economic–Environmental (4E) analysis

Energy Conversion and Management: X
In the context of the green energy transition, the organic Rankine cycle (ORC) is explored for energy conversion from renewable energy sources. The majority of ORC systems are explored with synthetic chemicals-based zeotropic mixtures as working fluids ...
Kumaran Kannaiyan, Bhawandeep Sharma
doaj   +1 more source