Results 31 to 40 of about 739 (173)
This review highlights how nano oils and eco‐friendly nano refrigerants enhance energy‐efficient refrigeration by improving thermal conductivity, lubrication, and system performance. The integration of rheological and tribological testing confirms reduced compressor work, better heat transfer, and higher COP using sustainable, low‐GWP refrigerants for ...
Mohammed Dilawar +7 more
wiley +1 more source
Heat‐pump charging of Carnot batteries with zeotropic large temperature glide CO2–alkane mixtures enables charging from ambient to ≈398.15 K with improved heat‐exchanger temperature matching at moderate pressure ratios. The highest COP occurs near xCO2 ≈ 0.15, whereas cost and throttling losses rise monotonically with CO2 content; butane isomers ...
Majid Zarif Sabbaghnia, Burak Atakan
wiley +1 more source
Theoretical Investigation on the Properties of R744/R290 Mixtures
Abstract At present, an interesting research is to find promising environmentally-friendly refrigerants in auto-cascade refrigeration cycle. This paper proposed a refrigerant mixture of R744 and R290 due to its zero ozone depletion potential and negligible global warming potential.
Li Zhang +4 more
openaire +1 more source
Comparative Analysis of the Environmental Load of Natural Refrigerant (R290)
Due to the detrimental environmental consequences of synthetic refrigerants, natural refrigerants have gained renewed interest as alternative refrigerants for a variety of applications due to their minimal ozone depletion potential (ODP) and insignificant global warming potential (GWP).
Houria Bouzghiba, Gábor Géczi
openaire +1 more source
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
Solar‐Blind Ultraviolet Photodetectors Based on Two‐Dimensional Materials and Their Heterostructures
Solar‐blind ultraviolet photodetectors are crucial for diverse applications. This review comprehensively summarizes recent advances using two‐dimensional materials and their heterostructures, which offer tunable bandgaps, flexibility, and no lattice‐matching constraints.
Yu Lu +7 more
wiley +1 more source
Due to the high energy consumption of refrigerated display cabinets used in supermarkets, a life cycle cooling performance analysis to increase energy efficiency and reduce environmental impacts is the main subject of this study.
Havva Demirpolat +4 more
doaj +1 more source
Most of the food transport trucks in Sothern Africa are equipped with refrigeration and air conditioning systems filled with fluorocarbon refrigerants such as R404A to facilitate the heat transfer process.
Thomas Kivevele
doaj +1 more source
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
We revealed the crystal structure of eKatE from atypical E. coli. eKatE exhibits a hydrogen‐peroxide‐sensitive major channel, a stabilized dimeric interface, an unusual covalent bond between C392 and Y415, and other distinctive features. These structural features contribute to its enhanced catalase activity compared to KatE in typical E.
Eunhee Koh +7 more
wiley +1 more source

