Results 51 to 60 of about 368 (107)

Transport Properties of Refrigerant Mixtures: Thermal Conductivity [PDF]

open access: yesIranian Journal of Chemistry & Chemical Engineering, 2015
In the present work, the integral equations method is used to calculate transport properties of polar fluids. For this goal, we use the Stockmayer potential and examine theoretically the thermal conductivity of several refrigerant mixtures such as R125 ...
Reza Khordad, Bahare Mirhosseini
doaj  

A Novel Data‐Driven Probabilistic Approach for Consequence Specific Urban Flood Risk Mapping

open access: yesWater Resources Research, Volume 62, Issue 2, February 2026.
Abstract Urban floods are increasing in frequency, causing significant socio‐economic impacts, especially where risk mitigation is limited. Conventional hydrologic and hydraulic models identify flood‐prone areas but demand extensive data and computation, whereas risk mapping offers a data‐efficient alternative by integrating elements at risk such as ...
Padmini Ponukumati   +2 more
wiley   +1 more source

Effect of New PVE Oil on the Performance of Air Conditioner with R32

open access: yesZhileng xuebao, 2017
The application range of R32, a new alternative refrigerant, is continually increasing. The development and use of a special refrigeration oil has become one of the key issues in R32 applications. This study investigated a new type of polyvinylether (PVE)
Jin Wufeng   +3 more
doaj  

Housing Price Prediction - Machine Learning and Geostatistical Methods

open access: yesReal Estate Management and Valuation
Machine learning algorithms are increasingly often used to predict real estate prices because they generate more accurate results than conventional statistical or geostatistical methods.
Cellmer Radosław, Kobylińska Katarzyna
doaj   +1 more source

Simulation study on performance of a dual-source hybrid heat pump unit with alternative refrigerants

open access: yesEnergy and Built Environment, 2020
To solve the problems of single heat source heat pump systems in severe cold regions, a dual-source hybrid heat pump unit (DSHHPU) is proposed. The mathematical models of the DSHHPU when charging R134a or its alternative refrigerants R32, R290 and R600a ...
Chenguang Bai   +5 more
doaj   +1 more source

Nutzen der 3d‐4f Koordination: Molekulares Quanten‐Feder‐Magnet‐Verhalten in axialen Ni2Ln Komplexen

open access: yesAngewandte Chemie, Volume 138, Issue 5, 28 January 2026.
Wir berichten über heterotrimetallische Ni2Ln Komplexe, die Austauschfeder‐Magnete auf molekularer Ebene nachahmen. CASSCF Rechnungen zeigen kollineare Anisotropieachsen, während µSQUID Studien langsame Relaxation und offene Hysterese in Ni2Tb, Ni2Dy, und Ni2Ho offenbaren.
Zhaoyang Jing   +7 more
wiley   +1 more source

Leveraging 3d‐4f Coordination: Molecular Quantum Spring‐Magnet Behavior in Axial Ni2Ln Complexes

open access: yesAngewandte Chemie International Edition, Volume 65, Issue 5, 28 January 2026.
We report heterotrimetallic Ni2Ln complexes mimicking exchange spring magnets at the molecular level. CASSCF calculations show collinear anisotropy axes, while µSQUID studies reveal slow relaxation and open hysteresis in Ni2Tb, Ni2Dy, and Ni2Ho. Ferromagnetic 3d–4f coupling and anisotropy alignment enhance bistability, offering promise for quantum, and
Zhaoyang Jing   +7 more
wiley   +1 more source

R32 partial condensation inside a brazed plate heat exchanger

open access: yesInternational Journal of Refrigeration, 2013
Abstract This paper presents recent measurements of heat transfer coefficient obtained during condensation of R32 inside a commercial brazed plate heat exchanger (BPHE). The experimental data show the effect of refrigerant mass velocity, vapor quality, temperature difference (saturation-to-wall) and inlet vapor superheating.
MANCIN, SIMONE   +2 more
openaire   +4 more sources

A Memristive Associative Learning Circuit for Fault‐Tolerant Multi‐Sensor Fusion in Autonomous Vehicles

open access: yesAdvanced Intelligent Systems, Volume 8, Issue 1, January 2026.
A memristor‐based associative learning circuit is presented for real‐time, fault‐tolerant sensor fusion in autonomous systems. The circuit mimics biological learning to recognize driving scenarios even with missing or degraded sensor inputs. Its low‐power, analog architecture enables robust decision‐making across diverse conditions, offering a ...
Kapil Bhardwaj   +3 more
wiley   +1 more source

R32 Scroll Compressors Technology

open access: yes, 2012
The purpose of the work is to describe technology used to design a scroll compressor with R32 refrigerant. Study what are the main differences and their implications compared to R410A refrigerant scroll compressors. And also study from mechanical scroll compressor design point of view up to its system integration, what are the main design changes taken
Xu, Hongling   +3 more
openaire   +2 more sources

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