Results 11 to 20 of about 368 (107)

Effect of HFO Refrigerants on Lubrication Characteristics (Part 1)

open access: yesTribology Online, 2023
Focusing on hydrofluoroolefin (HFO) refrigerant, which is expected to be applied as a green refrigerant, the effect of R1234yf on the tribological characteristics was compared with hydrofluorocarbon (HFC) refrigerant R32.
Yuji Shitara, Shigeyuki Mori
doaj   +1 more source

Spillovers across House Price Convergence Clubs: Evidence from the Polish Housing Market

open access: yesReal Estate Management and Valuation, 2020
The aim of this study is to assess whether significant spillovers exist among house price convergence clubs in the Polish housing market. This paper is a continuation of my previous research on house price convergence in Poland.
Tomal Mateusz
doaj   +1 more source

Theoretical Study on Cryogen Spray Cooling in Laser Treatment of Ota’s Nevus: Comparison and Optimization of R134a, R404A and R32

open access: yesEnergies, 2020
Cryogen spray cooling (CSC) could be applied clinically for the laser therapy of Ota’s nevus, a dermal hyperplastic pigmented disease with a morbidity rate of 0.1–0.6% in the Asian population.
Jiameng Tian   +3 more
doaj   +1 more source

On blends R32/R134a and R32/R125: Thermodynamic and heat transfer aspects

open access: yesInternational Journal of Energy Research, 2001
In this paper the author develops an algorithm on the basis of heat and thermodynamics theory, to predict data for film condensation on horizontal integral—fin tubes for R32/R134a and R32/R125 mixtures in 25/75, 50/50 per cent compositions by mass correspondingly.
openaire   +1 more source

Thermodynamic and economic analysis of ocean thermal energy conversion system using zeotropic mixtures

open access: yesCase Studies in Thermal Engineering
Zeotropic mixtures offer a promising strategy for enhancing the thermodynamic efficiency and economic feasibility of ocean thermal energy conversion (OTEC) systems.
Yanmei Zhang, Jiawei Deng, Zilong Deng
doaj   +1 more source

Effect of Intermiscibility on Internal Flow Boiling Heat Transfer and Pressure Drop Characteristics of R32-Oil Mixture

open access: yesZhileng xuebao, 2023
R32 is widely used in room air-conditioners, with heat-transfer characteristics affected by the intermiscibility of the oil. Therefore, it is necessary to determine the optimal intermiscibility of the oil to improve heat transfer characteristics.
Li Guang   +9 more
doaj  

Similarity of Changes in Average Prices of Residential Properties in Europe in 2010-2016

open access: yesReal Estate Management and Valuation, 2017
The aim of the article was to assess the similarities of average price changes in the residential market in 34 European countries in 2010-2016. The first part of the study concerned tendencies of changes in average prices in residential markets in the ...
Dittmann Iwona
doaj   +1 more source

Assessing Renewable Energy Practice in Turaki Ali House Kaduna-Nigeria

open access: yesReal Estate Management and Valuation, 2021
The research investigated tenant understanding and preparedness to embrace renewable energy practice as an alternative to public power supply during an outage from the national grid.
Sani Habibu   +2 more
doaj   +1 more source

An Investigation Into the Use of “Hybrid” Adjustment Techniques in the Application of the Sales Comparison Method in Residential Valuation

open access: yesReal Estate Management and Valuation, 2021
The sales comparison is the most common and universally accepted method in valuation. Although the theoretical entry point of the method is the same across most continents, its application in practice is varied and often determined by local circumstances.
Munshifwa Ephraim K.
doaj   +1 more source

Rational Design and Operando Characterization of Hierarchical α‐FeOOH‐FeP/Ni3S2 Catalysts for High‐Rate Alkaline Water Electrolysis

open access: yesENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
A hierarchical FeOOH–FeP@Ni3S2 electrocatalyst is engineered on 3D Ni foam to enable efficient alkaline oxygen evolution. Operando spectroscopic techniques reveal dynamic surface reconstruction and proton‐coupled electron transfer (PCET) kinetics. The catalyst exhibits low overpotential and industrial‐level current operation, driving high‐performance ...
Maria S. Metaxa   +2 more
wiley   +1 more source

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