Results 51 to 60 of about 703,374 (204)

Advanced downstream processing for sustainable ethyl acetate production by fermentation

AIChE Journal, Volume 71, Issue 3, March 2025.
Abstract Ethyl acetate is a platform chemical conventionally obtained through fossil fuel routes, but more recently its production by fermentation from carbohydrates has been scaled up to a pilot scale. Yet, the complexity of downstream processing (low product concentrations in liquid broth and in off‐gas, azeotrope formation, and the presence of ...
Tamara Janković, Adrie J. J. Straathof, Anton A. Kiss   +2 more
wiley   +1 more source

Converting Low-Grade Heat Into Power Using a Supercritical Rankine Cycle With Zeotropic Mixture Working Fluid

, 2010
A supercritical Rankine cycle using zeotropic mixture working fluids for the conversion of low-grade heat into power is proposed and analyzed in this paper. A supercritical Rankine cycle does not go through two-phase region during the heating process. By
Elias K. Stefanakos, Huijuan Chen, Muhammad M. Rahman, D. Yogi Goswami   +3 more
core   +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

Hygroscopic cycle for enhanced water efficiency in thermal power plants

Environmental Progress &Sustainable Energy, Volume 44, Issue 2, March/April 2025.
Abstract This article presents a methodology for calculating the potential for water savings when replacing the Rankine cycle with the hygroscopic cycle in power plants. The savings were analyzed in thermal power plants with different generating units (diesel, gas, steam, and combined cycle), different cooling systems (seawater open cycle, adiabatic ...
Juan Carlos Ríos‐Fernández, Víctor Manuel Fernández‐Pacheco, Alessia Manfredi, Francisco Javier Rubio‐Serrano, Antonio José Gutiérrez‐Trashorras   +4 more
wiley   +1 more source

Concentration Characteristic Line of Refrigerant Mixture R32/R125/R134a and Its Performance Analysis

Zhileng xuebao, 2005
Charge and leak processes of zeotropic refrigerant can cause the change of mixture concentration in refrigerant systems and affect the system performance.
邵亮亮, 张春路
doaj   +2 more sources

Energy, exergy and exergoenvironmental assessments of waste heat operated basic and modified cogeneration systems for freshwater and hydrogen production

IET Renewable Power Generation, Volume 19, Issue 1, January/December 2025.
The performance of four different configurations of waste heat‐driven organic Rankine cycle (ORC) integrated with reverse osmosis and Proton exchange membrane electrolyser is modelled in the current study. The four configurations of ORC are the basic (BORC), with internal heat exchanger (HORC), with mixing chamber (MORC), and with both internal heat ...
Mohammad Waqas Chandio, Shafiq Ur Rehman Qureshi, Laveet Kumar, Abdul Ghafoor Memon   +3 more
wiley   +1 more source

Generalised model for heteroazeotropic batch distillation with variable decanter hold-up [PDF]

, 2013
A general model of batch heteroazeotropic distillation is proposed. Both liquid phases present in the decanter can be refluxed or withdrawn as distillate, their hold-up can be increased, decreased or kept constant, as well. By assuming maximal separation,
Láng, Péter, Hegely, Laszlo, Gerbaud, Vincent   +2 more
core   +1 more source

A Comprehensive Study on Hydrogen Production via Waste Heat Recovery of Gas Turbine Cycles in Cogeneration Power‐Hydrogen Layouts: 4E Study and Optimization

International Journal of Energy Research, Volume 2025, Issue 1, 2025.
The efficient utilization of waste energy in gas turbine (GT) cycles (GTCs) is a crucial aspect of sustainable energy production. While previous studies have explored various aspects of waste energy recovery, a comparative analysis of different bottoming configurations has been lacking.
Mohammad Zoghi, Nasser Hosseinzadeh, Saleh Gharaie, Ali Zare, Panagiotis Grammelis   +4 more
wiley   +1 more source

Design of optimal waste heat recovery system for compressed air energy storage considering various system layouts and working fluid types

Case Studies in Thermal Engineering
Compressed Air Energy Storage (CAES) is a long-time electricity storage technology, whereas the low efficiency restricts its popularization. Recycling waste heat from interstage coolers can enhance performance of CAES, and organic Rankine cycle (ORC ...
Xu Chen, Jian Li, Yunfei Zhang, Mingzhe Yu, Yujie Zhang, Xingying Chen, Jun Shen   +6 more
doaj   +1 more source

Optimal design of reduced vapor transfer dividing wall structures with and without heat integration

AIChE Journal, Volume 70, Issue 11, November 2024.
Abstract A dividing wall column (DWC) is a prime example of process intensification, whereby significant energy and cost savings can be achieved for some systems compared to operation in conventional design of two columns in series. It has been theorized that the vapor and liquid thermal coupling streams in the DWC could be replaced by liquid‐only ...
Fanyi Duanmu, Eva Sorensen
wiley   +1 more source