Results 11 to 20 of about 6,008 (260)

Carbon Emission Assessment and Economic Analysis of Refrigerant Recycling

open access: yesZhileng xuebao, 2021
China has entered the end of the hydrochlorofluorocarbon (HCFCs) refrigerant phase out, and will soon start to reduce its production and consumption of HFCs simultaneously in 2024.
Wang Yue   +4 more
doaj  

Experimental Investigation on VCR system using Nano-refrigerant for COP Enhancement

open access: yesChemical Engineering Transactions, 2018
Nano fluids have high heat transfer potential, increased thermal properties in comparison with conventional working fluids which increases the Co-efficient of performance of the refrigeration system.
Raghu Ande   +2 more
doaj   +1 more source

Performance Evaluation of Centrifugal Refrigeration Compressor Using R1234yf and R1234ze(E) as Drop-In Replacements for R134a Refrigerant

open access: yesEnergies, 2022
With the increasing global requirements for environmental protection, refrigerants with ODP of 0 and low GWP are widely concerned and applied. In this paper, the CFD numerical method simulates the R134a centrifugal compressor directly replaced by R1234yf
Kexin Yi   +5 more
doaj   +1 more source

Characteristics of Refrigerant Boiling Heat Transfer in Rectangular Mini-Channels during Various Flow Orientations

open access: yesEnergies, 2021
This paper reports the results of heat transfer during refrigerant flow in rectangular mini-channels at stationary conditions. The impacts of selected parameters on boiling are discussed, i.e., thermal and flow parameters, dimensions and orientation of ...
Magdalena Piasecka, Kinga Strąk
doaj   +1 more source

A Screening of Low-GWP Refrigerant for Ejector Refrigeration

open access: yesChemical Engineering Transactions, 2018
Ejector refrigeration is a promising technology to reduce primary energy consumption for building cooling. Unfortunately, a change in the design criteria (i.e., geometry, working fluid, operating conditions) influences the system performance owing to variations in the local fluid dynamic phenomena at the “local-scale”.
Besagni G., Croci L., Nesa R.
openaire   +4 more sources

Intrapatient tumour heterogeneity and clonal evolution in an autopsy study of metastatic salivary gland cancer

open access: yesMolecular Oncology, EarlyView.
Tumour heterogeneity and clonal evolution of metastatic salivary gland cancer were evaluated in two patients with adenoid carcinoma and one patient with myoepithelial carcinoma. Radiology‐guided autopsy enabled multi‐region sampling (total samples n = 149), followed by whole‐genome sequencing and phylogenetic reconstruction (17 tumour samples, 4–7 per ...
Gerben Lassche   +10 more
wiley   +1 more source

Approximate Thermal Calculation of the Superheated Steam Condenser of Heat Pumps

open access: yesИзвестия высших учебных заведений и энергетических объединенний СНГ: Энергетика, 2022
A comparative analysis of the methods of approximate thermal calculation of the superheated steam condenser of the steam compression heat pump of the heat supply system is presented.
V. I. Volodin, S. V. Zditovetskaya
doaj   +1 more source

Protocol for quantifying miRNA trafficking across the endosomal membrane

open access: yesFEBS Open Bio, EarlyView.
An in vitro protocol measures miRNA uptake into endosomes isolated from mammalian cell extracts, which are free of subcellular contaminants. Performed at 37 °C in the presence of ATP, it ensures the import of single‐stranded miRNA into the endosomal lumen.
Syamantak Ghosh   +2 more
wiley   +1 more source

Prediction of the Thermal Conductivity of Refrigerants by Computational Methods and Artificial Neural Network

open access: yesFrontiers in Chemistry, 2017
Background: The thermal conductivity of fluids can be calculated by several computational methods. However, these methods are reliable only at the confined levels of density, and there is no specific computational method for calculating thermal ...
Forouzan Ghaderi   +3 more
doaj   +1 more source

Cooling and condensation heat transfer and pressure drop of a refrigerant at high pressures in a chevron-type plate heat exchanger with high chevron angle

open access: yesMechanical Engineering Journal, 2020
In industrial fields, heat source over 130°C are widely needed, and for this development of industrial high-temperature heat pump systems has been promoted.
Kazushi MIYATA   +5 more
doaj   +1 more source

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