Results 21 to 30 of about 248,805 (269)

CALCULATION OF TEMPERATURE-HUMIDITY MODE OF BRICK AND REINFORCED CONCRETE CHIMNEYS WALLS

open access: yesИзвестия высших учебных заведений: Проблемы энергетики, 2018
The method for calculating the temperature-humidity mode of brick and reinforced concrete chimneys is presented. The processes of heat exchange of combustion products in the gas volume of the chimneys and heat and mass transfer in it’s walls also, are ...
D. A. Khvorenkov   +2 more
doaj   +1 more source

Binary liquid film condensation from water-ammonia vapors mixture flowing downward along a parallel plate condenser

open access: yesFrontiers in Mechanical Engineering, 2023
The ammonia-water film condensation is used as an efficient working fluid in industrial applications such as refrigeration, plate condenser and evaporator, absorber/generator heat exchange, air-conditioning, heat pumps and separation processes.
Abdelaziz Nasr   +2 more
doaj   +1 more source

Selecting and Installing Energy-Efficient Windows to Improve Dwelling Sustainability

open access: yesVitruvio: International Journal of Architectural Technology and Sustainability, 2017
Windows play a significant role in achieving comfort in buildings by letting in natural light, solar warmth, fresh air and permitting outdoor views. On the other hand, poor quality windows can be the source of overheating or unwanted infiltration or ...
Avi Friedman, Morgan Matheson
doaj   +1 more source

Spirocyclic Nitroxides as Versatile Tools in Modern Natural Sciences: From Synthesis to Applications. Part I. Old and New Synthetic Approaches to Spirocyclic Nitroxyl Radicals

open access: yesMolecules, 2021
Spirocyclic nitroxyl radicals (SNRs) are stable paramagnetics bearing spiro-junction at α-, β-, or γ-carbon atom of the nitroxide fragment, which is part of the heterocyclic system.
Elena V. Zaytseva, Dmitrii G. Mazhukin
doaj   +1 more source

A time-domain finite element model reduction method for viscoelastic linear and nonlinear systems

open access: yesLatin American Journal of Solids and Structures
Many authors have shown that the effective design of viscoelastic systems can be conveniently carried out by using modern mathematical models to represent the frequency- and temperature-dependent behavior of viscoelastic materials.
Antônio Marcos Gonçalves de Lima   +3 more
doaj   +1 more source

Effective Method to Collect Indoor Floating Aerosols Using Cooling Equipment

open access: yesAtmosphere, 2023
If we collect aerosols containing SARS-CoV-2 with condensed water and obtain the solution, a sensing device can detect the viruses, and we can easily take prompt countermeasures.
Kosuke Minakuchi   +4 more
doaj   +1 more source

Numerical Simulation of Volatile Organic Compounds during Condensation in a Vertical Tube

open access: yesProceedings, 2020
The purpose of this study is to analyze the combined heat and mass transfer through condensation of volatile organic compounds (VOCs), particularly alcohol (n-butanol-propanol) in the presence of non-condensable gas inside a vertical tube.
Youness El Hammami   +4 more
doaj   +1 more source

Current Research Trends in the Process of Condensation of Cooling Zeotropic Mixtures in Compact Condensers

open access: yesEnergies, 2022
This paper is an introduction to the cycle proposed by the authors related to research directions concerning the problems of condensation of zeotropic refrigerant mixtures.
Marcin Kruzel   +4 more
doaj   +1 more source

Sequential Condensation and Hydrodeoxygenation Reaction of Furfural-Acetone Adduct over Mix Catalysts Ni/SiO2 and Cu/SiO2 in Water

open access: yesIndonesian Journal of Chemistry, 2018
Sequential condensation and hydrodeoxygenation reaction were perform using autoclave batch reactor in the presence of water as a solvent. The condensation of furfural and acetone was performed using MgO catalyst followed by hydrodeoxygenation using mix ...
Siti Mariyah Ulfa   +2 more
doaj   +1 more source

A Heat Exchanger with Water Vapor Condensation on the External Surface of a Vertical Pipe

open access: yesEnergies, 2022
The paper is concerned with water vapor condensation on vertical pipes. The vertical position of pipes in a condenser is not discussed very often. Its application has a number of particularities in terms of the numerical determination of heat transfer ...
Petr Kracík   +3 more
doaj   +1 more source

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