Results 1 to 10 of about 36,782 (207)
Viscosity of binary refrigerant mixtures of R32 + R1234yf and R32 + R1243zf
International Journal of Refrigeration, 2021 Abstract Viscosity measurements of six binary mixtures of R32+R1234yf and R32+R1243zf at different compositions were conducted in the homogenous liquid and gas phases with a vibrating-wire viscometer in the temperature range from (254 to 383) K and pressures from (1 to 8) MPa.
Xiaoxian Yang +2 more
exaly +4 more sources
International Journal of Refrigeration, 2021 Abstract Thermal conductivity measurements of pure R1243zf and binary mixtures of R32 + R1243zf and R32 + R1234yf were conducted in the homogeneous liquid and vapour phases with a transient hot-wire technique. The mole fractions of R32 are 0.25, 0.50, and 0.75 in both binary systems. The temperature range of the measurements was from (264.1 to 405.6)
Dongchan Kim +2 more
exaly +4 more sources
Viscosity Measurements and Modeling for R32 and Binary Mixture of R32/R1234yf
Zhileng xuebao, 2018 Recently, the Paris Agreement which many nations agreed to limit greenhouse gas emissions, has come into effect. According to the agreement, many of the compounds currently used in the refrigeration sector are scheduled for phase out due to ozone ...
Meng Xianyang +4 more
doaj +1 more source
УРАВНЕНИЯ ДЛЯ РАСЧЕТА ТЕПЛОПРОВОДНОСТИ ХЛАДАГЕНТОВ R32 И R125
Holodilʹnaâ Tehnika i Tehnologiâ, 2014 Составлены уравнения для расчета теплопроводности альтернативных хладагентов R32 и R125 через переменные температуру и плотность. Коэффициенты уравнений определены методом наименьших квадратов по экспериментальным данным.
А.С. Бойчук
doaj +3 more sources
Energies, 2016 For zeotropic mixtures, the temperature varies during phase change, which is opposed to the isothermal phase change of pure fluids. The use of such mixtures as working fluids in organic Rankine cycle power plants enables a minimization of the mean ...
Jesper G. Andreasen +4 more
doaj +3 more sources
УРАВНЕНИЯ ДЛЯ РАСЧЕТА ВЯЗКОСТИ ХЛАДАГЕНТОВ R32 И R125
Holodilʹnaâ Tehnika i Tehnologiâ, 2015 Составлены уравнения для расчета вязкости альтернативных хладагентов R32 и R125 через переменные температуру и плотность. Коэффициенты уравнений определены методом наименьших квадратов по экспериментальным данным.
А. Бойчук
doaj +3 more sources
Science and Technology for the Built Environment, 2016 This article presents an experimental assessment of coefficient of performance and irreversible loss in the heat pump cycle using hydro-fluoro-olefin base ternary mixtures: YF300 (R744/R32/R1234yf; 4/44/52 mass%), YF200 (R744/R32/R1234yf; 5/28/67 mass%), ZE300 (R744/R32/R1234ze(E); 4/43/53 mass%), and ZE200 (R744/R32/R1234ze(E); 9/29/62 mass%).
Sho Fukuda +4 more
openaire +2 more sources
TiO2 nanolubricant: An approach for performance improvement in a domestic air conditioner
Results in Materials, 2022 TiO2 nanolubricant has been used in this experimental work to study the performance of domestic air conditioner. Air conditioner capacity was 1 ton and the original system has R22 refrigerant.
Md Imteaz Ahmed, Jamal Uddin Ahamed
doaj +1 more source
International Journal of Thermophysics, 2020 This study obtained the precise measurements of the vapor–liquid equilibrium properties for R32/R1234yf binary mixtures, which are the key components for the next-generation refrigerant mixtures. To obtain the data more rapidly and precisely, two recirculation-type vapor–liquid equilibrium property measurement apparatuses installed in different ...
T. Yamada +3 more
openaire +2 more sources
Refrigerant R32 as lower GWP working fluid in residential air conditioning systems in Europe and the USA [PDF]
, 2017 Because air conditioning and heat pump systems contribute greatly to greenhouse gas emissions, equipment with both lower global warming potential (GWP) working fluids and a higher level of performance should be used.
Makhnatch, Pavel +3 more
core +2 more sources