Results 11 to 20 of about 1,680,915 (216)

Organic rankine cycle systems with mixture of pure fluids On infeasible fluids fractions due to the

Journal of Thermal Engineering, 2022
The Organic Rankine Cycle (ORC) is a promising technology for power generation from low-grade heat. The selection of working fluids is one of the important key points to improve the performance of an ORC system.
Basma HAMDI, Abdelhamid KHEIRI, Mohamed Tahar MABROUK, Lakdar KAIROUANI   +3 more
doaj   +1 more source

Thermodynamic, Economic and Sustainability Analysis of Solar Organic Rankine Cycle System with Zeotropic Working Fluid Mixtures for Micro-Cogeneration in Buildings

Applied Sciences, 2020
Globally there are several viable sources of renewable, low-temperature heat (below 130 °C), particularly solar energy, geothermal energy, and energy generated from industrial wastes.
Wahiba Yaïci, Evgueniy Entchev, Pouyan Talebizadehsardari, Michela Longo   +3 more
doaj   +1 more source

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

Zeotropic Mixture Selection for an Organic Rankine Cycle Using a Single Screw Expander

Energies, 2020
The organic Rankine cycle (ORC) is a popular and promising technology that has been widely studied and adopted in renewable and sustainable energy utilization and low-grade waste heat recovery.
Xinxin Zhang, Yin Zhang, Zhenlei Li, Jingfu Wang, Yuting Wu, Chongfang Ma   +5 more
doaj   +1 more source

Thermodynamic analysis of hybrid-nanofluids-zeotropic mixtures in a vapour compression refrigeration system (VCRS) based on exergy principles [PDF]

International Journal of Research in Industrial Engineering, 2023
Cooling refrigeration systems ingest prime energy and contribute to universal negative impact due to ecologically unfavorable working fluids used. Hence, the quest to improve the performance of Vapour Compression Refrigeration System (VCRS) with more ...
Aniekan Ikpe, Ekpenyong Udofia, Emmanuel Odeh   +2 more
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
doaj   +1 more source

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