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Archives of Thermodynamics Volume 37 Issue 3

Subject Areas: Physics and Astronomy (miscellaneous)
Publisher: Walter de Gruyter - de Gruyter
ISSN: 2083-6023
SJR: 17

LitStream

Journal Article

Effect of hall currents on thermal instability of dusty couple stress fluid

Aggarwal, Amrish Kumar; Verma, Anushri

2016 Archives of Thermodynamics

doi:10.1515/aoter-2016-0016

Abstract In this paper, effect of Hall currents on the thermal instability of couple-stress fluid permeated with dust particles has been considered. Following the linearized stability theory and normal mode analysis, the dispersion relation is obtained. For the case of stationary convection, dust...
LitStream

Journal Article

Heat transfer in plate heat exchanger channels: Experimental validation of selected correlation equations

Cieśliński, Janusz T.; Fiuk, Artur; Typiński, Krzysztof; Siemieńczuk, Bartłomiej

2016 Archives of Thermodynamics

doi:10.1515/aoter-2016-0017

Abstract This study is focused on experimental investigation of selected type of brazed plate heat exchanger (PHEx). The Wilson plot approach was applied in order to estimate heat transfer coefficients for the PHEx passages. The main aim of the paper was to experimentally check ability of several...
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Journal Article

Influence of nitrogen on thermodynamic properties and plasma composition in discharge tube of CO-laser

Grigorian, Galina M.; Cenian, Adam

2016 Archives of Thermodynamics

doi:10.1515/aoter-2016-0018

Abstract The role of the addition of nitrogen to the discharge plasma of CO lasers on thermodynamic properties and composition of the laser active medium is discussed here. It is shown that nitrogen addition improves laser characteristics and changes the composition of the laser active medium....
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Journal Article

Parametric study of fluid flow and heat transfer over louvered fins of air heat pump evaporator

Muszyński, Tomasz; Kozieł, Sławomir Marcin

2016 Archives of Thermodynamics

doi:10.1515/aoter-2016-0019

Abstract Two-dimensional numerical investigations of the fluid flow and heat transfer have been carried out for the laminar flow of the louvered fin-plate heat exchanger, designed to work as an air-source heat pump evaporator. The transferred heat and the pressure drop predicted by simulation...
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Journal Article

Analytical 1D models of the wall thermal resistance of rectangular minichannels applied in heat exchangers

Rybiński, Witold; Mikielewicz, Jarosław

2016 Archives of Thermodynamics

doi:10.1515/aoter-2016-0020

Abstract The paper presents four 1-dimensional models of thermal resistance of walls in a heat exchanger with rectangular minichannels. The first model is the simplest one, with a single wall separating two fluids. The second model of the so called equivalent wall takes into account total volume...
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Journal Article

Experimental investigation of domestic micro-CHP based on the gas boiler fitted with ORC module

Wajs, Jan; Mikielewicz, Dariusz; Bajor, Michał; Kneba, Zbigniew

2016 Archives of Thermodynamics

doi:10.1515/aoter-2016-0021

Abstract The results of investigations conducted on the prototype of vapour driven micro-CHP unit integrated with a gas boiler are presented. The system enables cogeneration of heat and electric energy to cover the energy demand of a household. The idea of such system is to produce electricity...
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Journal Article

A model of gas flow with friction in a slotted seal

Joachimiak, Damian; Krzyślak, Piotr

2016 Archives of Thermodynamics

doi:10.1515/aoter-2016-0022

Abstract The paper discusses thermodynamic phenomena accompanying the flow of gas in a slotted seal. The analysis of the gas flow has been described based on an irreversible adiabatic transformation. A model based on the equation of total enthalpy balance has been proposed. The iterative process...
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Journal Article

Validation of the generalized model of two-phase thermosyphon loop based on experimental measurements of volumetric flow rate

Bieliński, Henryk

2016 Archives of Thermodynamics

doi:10.1515/aoter-2016-0023

Abstract The current paper presents the experimental validation of the generalized model of the two-phase thermosyphon loop. The generalized model is based on mass, momentum, and energy balances in the evaporators, rising tube, condensers and the falling tube. The theoretical analysis and the...

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