Results 81 to 90 of about 3,894 (216)

Performance Investigation of Eco‐Friendly Refrigerant Mixtures as an Alternative to R134a in Vapour‐Compression Refrigeration System

open access: yesAsia-Pacific Journal of Chemical Engineering, Volume 21, Issue 2, March/April 2026.
ABSTRACT The growing impacts of climate change and energy scarcity demand environmentally sustainable refrigeration solutions. This study investigates eco‐friendly refrigerants (R152a, R290 and R600a) and their optimized ternary mixture as alternatives to R134a. Four blend compositions were analysed using experimental testing and REFPROP 10.0 modelling
M. Periyasamy, P. Senthilkumar
wiley   +1 more source

Advanced exergoeconomic analysis and mathematical modelling of the natural gas fired gas turbine unit used for industrial cogeneration system

open access: yesCase Studies in Thermal Engineering
In this study, mathematical model of advanced exergoeconomic analysis (ADEXEC) basing on advanced specific exergy cost (ADSPECO) and advanced exergy-cost-energy-mass (EXCEM) (ADEXCEM) methods are applied to the industrial cogeneration system (COGEN ...
Hasan Caglayan   +5 more
doaj   +1 more source

Thermodynamic Mechanism of Self-Heat Recuperative and Self-heat Recovery Heat Circulation System for a Continuous Heating and Cooling Gas Cycle Process

open access: yesChemical Engineering Transactions, 2017
The thermodynamic mechanism of self-heat recuperative and self-heat recovery heat circulation system for a continuous isobaric heating and cooling gas cycle process without chemical reaction has been studied in terms of the exergy analysis by using ...
A. Tsutsumi, Y. Kansha
doaj   +1 more source

Uncovering the Key Factors Influencing Phytochemical and Phytopharmacological Properties During Medicinal Plant Processing

open access: yeseFood, Volume 7, Issue 1, February 2026.
From farm to pharma, this review details the engineering of quality in medicinal plants through a science‐driven approach: it first elucidates how genetic and environmental factors inscribe the plant's phytochemical and phytopharmacological profile before harvest, and then dissects the postharvest techniques and technologies—chemical and thermal pre ...
Elyas Aryakia
wiley   +1 more source

Conventional and advanced exergy analyses of an air-conditioning system in a subway station

open access: yes, 2019
Air-conditioning systems in subway stations consume a large amount of energy. In this study, conventional and advanced exergy analyses were carried out to determine the energy-saving potential of an air-conditioning system in a subway station.
Tang, Zhihua   +4 more
core  

Exergy and sustainability-based optimisation of flat plate solar collectors by using a novel mathematical model

open access: yes, 2023
A novel mathematical model was used to estimate optimum tilt and azimuth angles, considering exergoeconomic and sustainability aspects. This approach made the solar collector's performance evaluation independent of experimental precision.
Tiktas, Asli || Gunerhan, Huseyin || Hepbasli, Arif
core   +1 more source

Systems‐Level Optimization of Hybrid Produced Water Treatment Systems for Sustainable Oil and Gas Production: A Review of Current Technologies

open access: yesGlobal Challenges, Volume 10, Issue 2, February 2026.
ABSTRACT Produced water (PW) is the largest and most complex waste stream generated during oil and gas production, posing significant environmental, operational, and regulatory challenges due to its high salinity, dispersed hydrocarbons, toxic organics, heavy metals, and naturally occurring radioactive materials. Although numerous studies have reviewed
Omogbolade L. Adepitan   +3 more
wiley   +1 more source

Exergy Analysis of a Desiccant Cooling Cycle Recovering Heat from Hot Exhaust

open access: yes, 2012
The manufacturing processes of industrial gases are major consumers of energy as electricity or fossil fuel. A big part of this energy ends up as heat in the process gas at temperatures around 150°C.
Zoughaib, Assaad   +5 more
core  

Assessment of conventional and enhanced exergy analysis of the natural gas liquefaction plant

open access: yes
The liquefaction method has become increasingly important in the natural gas trade as a result of both the cost and application difficulties associated with pipe transfer.
Karabuğa, Arif, Utlu, Zafer
core   +1 more source

Exploratory Study on Carbon Dioxide Blends With Low‐GWP Working Fluids for Medium and High‐Temperature Heat Pumps Under Step Pressure

open access: yesAsia-Pacific Journal of Chemical Engineering, Volume 21, Issue 1, January/February 2026.
ABSTRACT This study investigates binary zeotropic mixtures of R744 (CO₂) blended with eco‐friendly refrigerants for medium‐high temperature heat pumps, comparing them with conventional R744/R134a systems. All mixtures meet 60–80 K temperature lift requirements under low‐temperature conditions. A genetic algorithm optimized system parameters using fixed
Lingling Sun   +6 more
wiley   +1 more source

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