Results 31 to 40 of about 1,682,876 (216)

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

Thermodynamic Analysis of an Innovative Cold Energy Storage System for Auto-Cascade Refrigeration Applications

Energies, 2023
The cooling capacity needed by ultra-low temperature apparatus cannot be reached economically with a single vapor compression refrigeration cycle due to the constraint of the high compressor pressure ratio.
Zhenzhen Liu, Jingde Jiang, Zilong Wang, Hua Zhang   +3 more
doaj   +1 more source

Numerical Study of the Condensation Length of Binary Zeotropic Mixtures

Energy Procedia, 2015
AbstractHeat exchangers are the main components in refrigeration and liquefaction systems, particularly in the liquefaction of natural gas, where the gas being condensed is a multicomponent mixture. The study of the two-phase condensation region is important for the design of heat exchangers. This paper studies heat and mass transfer characteristics of
Deng, Han, Fernandino, Maria, Dorao, Carlos A.   +2 more
openaire   +1 more source

Energy, Exergy, Economic, and Environmental Assessment of a PTSC‐Assisted Low‐Temperature Geothermal ORC–PEM System for Enhanced Hydrogen and Hot Water Production

International Journal of Energy Research, Volume 2026, Issue 1, 2026.
This study evaluates a renewable‐energy‐based system consisting of 300 m2 of parabolic trough solar collectors (PTSCs), a low‐temperature geothermal source (62°C), an Organic Rankine Cycle (ORC) using R134a as the working fluid, and a proton exchange membrane (PEM) electrolyzer for hydrogen production.
Ayhan Atiz, Cheng Du
wiley   +1 more source

Minimum reflux calculation for multicomponent distillation in multi‐feed, multi‐product columns: Algorithms and examples

AIChE Journal, Volume 71, Issue 11, November 2025.
Abstract In this work, we present the first algorithm for identifying the minimum reboiler vapor duty requirement for a general multi‐feed, multi‐product (MFMP) distillation column separating ideal multicomponent mixtures. This algorithm incorporates our recently developed shortcut model for MFMP columns.
Zheyu Jiang, Mohit Tawarmalani, Rakesh Agrawal   +2 more
wiley   +1 more source

Improving the performance of booster heat pumps using zeotropic mixtures [PDF]

Energy, 2018
Abstract This study demonstrated an increase in the thermodynamic performance of a booster heat pump, which was achieved by choosing the working fluid among pure and mixed fluids. The booster heat pump was integrated in an ultra-low-temperature district heating network with a forward temperature of 40 °C to produce domestic hot water, by heating part
B. Zühlsdorf, W. Meesenburg, T.S. Ommen, J.E. Thorsen, W.B. Markussen, B. Elmegaard   +5 more
openaire   +1 more source

Pareto‐Optimal Treatment of Uncertainties in Model‐Based Process Design and Operation

Chemie Ingenieur Technik, Volume 97, Issue 11-12, Page 1057-1064, November 2025.
It is described how to handle here‐and‐now (i.e., process design‐related) and wait‐and‐see (i.e., process operation‐related) decisions in a multicriteria framework. This approach exploits the adjustability for the wait‐and‐see variables while at the same time respecting optimality guarantees on process key performance indicators.
Jan Schwientek, Katrin Teichert, Jan Schröder, Johannes Höller, Norbert Asprion, Pascal Schäfer, Martin Wlotzka, Michael Bortz   +7 more
wiley   +1 more source

Identification of Pressure‐Swing Separation Processes for Azeotropic Mixtures Using Deep Reinforcement Learning

Chemie Ingenieur Technik, Volume 97, Issue 11-12, Page 1094-1102, November 2025.
An autonomous agent trained via reinforcement learning extends flowsheet synthesis capabilities by incorporating distillation columns operating at different pressures. This enables the detection of pressure‐swing strategies, among other efficient separation processes, for a diverse set of azeotropic mixtures.
Alexander B. Wolf, Jonathan Pirnay, Quirin Göttl, Dominik G. Grimm, Jakob Burger   +4 more
wiley   +1 more source

Exploring Low‐Global Warming Potential Refrigerants for Medium‐Charge Systems

Energy Technology, Volume 13, Issue 9, September 2025.
This study evaluates 15 low‐global warming potential (GWP) refrigerants as alternatives for medium‐charge systems, focusing on environmental impacts, operational performance, and system design integration. Key findings reveal R‐447A's suitability for standard climates and R‐454B's advantages in high ambient conditions, providing actionable guidance for
Fadi Alsouda, Nick S. Bennett, Suvash C. Saha, Mohammad S. Islam   +3 more
wiley   +1 more source

Efficient heat integration within discretely heat integrated distillation columns using liquid injection

AIChE Journal, Volume 71, Issue 8, August 2025.
Abstract Electrification of distillation processes through discretely heat integrated distillation columns (D‐HIDiC) is an effective approach to enhance energy efficiency and lower carbon emissions. For separating systems with high temperature lift, multi‐stage compression and inter‐stage cooling are necessary to link the high‐pressure rectifier and ...
Chengtian Cui, Jos van Reisen, Ioannis Tyraskis, Anton A. Kiss   +3 more
wiley   +1 more source