Search results

1

An investigation into the influence of different parameters on the onset of boiling in minichannels

100%

Piasecka M.

Archives of Thermodynamics

|

2012

|

issue 4

2

Experimental and theoretical studies on heat and mass transfer in anti-condensation coatings

100%

Rusowicz A., Grzebielec A.

Archives of Thermodynamics

|

2011

|

issue 3

3

Application of the finite element method to the determining of boiling heat transfer coefficient for minichannel flow

100%

Piasecka M., Maciejewska B.

Archives of Thermodynamics

|

2013

|

issue 1

4

Comparative study of flow condensation in conventional and small diameter tubes

100%

Mikielewicz D., Andrzejczyk R.

Archives of Thermodynamics

|

2012

|

issue 2

5

The analysis of gradient algorithm effectiveness - two dimensional heat transfer problem

100%

Łopata S., Ocłoń P.

Archives of Thermodynamics

|

2010

|

issue 4

6

Investigations on heat and momentum transfer in CuO-water nanofluid

100%

Dzido G., Drzazga M., Lemanowicz M., Gierczycki A. T.

Archives of Thermodynamics

|

2015

|

issue 2

7

Heat transfer in falling film evaporators during the industrial process of apple juice concentrate production

100%

Cyklis P.

Archives of Thermodynamics

|

2018

|

vol. 39

|

issue 3

8

Experimental research on the resistojet thruster heater

100%

Kindracki J., Mężyk Ł., Paszkiewicz P.

Archives of Thermodynamics

|

2018

|

vol. 39

|

issue 3

9

Study of the influence of the lack of contact in platefin and tube heat exchanger on heat transfer

100%

Andrzejewski D., Łęcki M., Gutkowski A.

Archives of Thermodynamics

|

2018

|

vol. 39

|

issue 3

10

Intensification of heat transfer between heat exchange surfaces at low RE values

100%

Cernecky J., Brodnianska Z., Koniar J.

Chemical and Process Engineering

|

2015

|

vol. 36

|

issue 3

331-344

EN

This contribution deals with the heat transfer parameters and pressure losses in heat exchange sets with six geometrical arrangements at low Re values (Re from 476 to 2926). Geometrical arrangements were characterised by the h/H ratio ranging from 0.2 to 1.0. The experiments used the holographic interferometry method in real time. This method enables visible and quantitative evaluations of images of temperature fields in the examined heat exchange. These images are used to determine the local and mean heat transfer parameters. The obtained data were used to determine the Colburn j-factor and the friction coefficient f. The measured values show that by using the profiled heat exchange surfaces and inserting regulating tubes, an intensification of heat transfer (increase of Num, and/or j) was achieved. However, pressure losses recorded a significant increase (increase of f).

11

The Effect of Regulating Elements on Convective Heat Transfer along Shaped Heat Exchange Surfaces

100%

Cernecky J., Koniar J., Brodnianska Z.

Chemical and Process Engineering

|

2013

|

issue 1

12

Quantification of the Radiative and Convective Heat Transfer Processes and their Effect on mSOFC by CFD Modelling

100%

Pianko-Oprych P., Kasilova E., Jaworski Z.

Polish Journal of Chemical Technology

|

2014

|

vol. 16

|

issue 2

51-55

EN

The CFD modelling of heat transfer in a microtubular Solid Oxide Fuel Cell (mSOFC) stack has been presented. Stack performance predictions were based on a 16 anode-supported microtubular SOFCs sub-stack, which is a component of the overall stack containing 64 fuel cells. Both radiative and convective heat transfer were taken into account in the modelling. The heat flux value corresponded to the cell voltage of 0.7 [V]. Two different cases of the inlet air velocity of 2.0 and 8.5 [ms–1] were considered. It was found that radiation accounted for about 20–30 [%] of the total heat flux from the active tube surface, which means that the convective heat transfer predominated over the radiative one.

13

Numerical analysis of the steam flow field in shell and tube heat exchanger

100%

Bartoszewicz J., Bogusławski L.

Archives of Thermodynamics

|

2016

|

issue 2

14

The Effect of Regulating Elements on Convective Heat Transfer along Shaped Heat Exchange Surfaces

100%

Cernecky J., Koniar J., Brodnianska Z.

|

vol. 34

|

issue 1

5-16

EN

The paper deals with a study of the effect of regulating elements on local values of heat transfer coefficients along shaped heat exchange surfaces with forced air convection. The use of combined methods of heat transfer intensification, i.e. a combination of regulating elements with appropriately shaped heat exchange areas seems to be highly effective. The study focused on the analysis of local values of heat transfer coefficients in indicated cuts, in distances expressed as a ratio x/s for 0; 0.33; 0.66 and 1. As can be seen from our findings, in given conditions the regulating elements can increase the values of local heat transfer coefficients along shaped heat exchange surfaces. An optical method of holographic interferometry was used for the experimental research into temperature fields in the vicinity of heat exchange surfaces. The obtained values correspond very well with those of local heat transfer coefficients αx, recorded in a CFD simulation.

15

On the modulation frequency dependence of the photoacoustic signal for a metal coated glass-liquid system

100%

Marín E., Vera-Medina G., García A., Calderón A.

Open Physics

|

2010

|

vol. 8

|

issue 4

634-638

EN

We show that the front photoacoustic signal due to a sample consisting of a glass plate with a metal coated surface, at which thermal waves are generated by periodical light absorption, enhances for certain modulation frequencies when the other glass surface is covered with a liquid sample. This contradicts the intuitive expectation based on the assumption that the liquid provides a new channel for heat conduction thereby decreasing the substrate temperature. Experimental results are shown and the described effect is explained using a thermal wave interference model.

16

Study of temperature distribution in the ground

100%

Larwa B., Kupiec K., Larwa B., Kupiec K.

Chemical and Process Engineering

|

2019

|

vol. 40

|

issue 1

17

Unsteady MHD boundary layer flow and heat transfer over the stretching sheets submerged in a moving fluid with Ohmic heating and frictional heating

100%

Hua H., Su X.

Open Physics

|

2015

|

vol. 13

|

issue 1

EN

This paper is devoted to the analysis of the unsteady magnetohydrodynamic (MHD) boundary layer flow and heat transfer on a permeable stretching sheet embedded in a moving incompressible viscous fluid. The combined effects of Ohmic heating, thermal radiation, frictional heating and internal heat absorption/generation are taken into account. The governing time dependent nonlinear boundary layer equations are converted into a systemof nonlinear ordinary differential equations by similarity transformations. Some analytical results that give the characteristics of the velocity field in the boundary layer are presented and proved. The governing equations are then solved by using the shooting technique along with the fourth order Runge-Kutta method. The analytical properties proved in this paper are consistent with those obtained by the numerical method. Furthermore, the effects of the various parameters on the velocity and temperature fields are presented graphically and discussed in detail.

18

Computational analysis for the effect of the taper angle and helical pitch on the heat transfer characteristics of the helical cone coils

89%

Elazm M. A., Ragheb A., Elsafty A., Teamah M., Elazm M. A., Ragheb A., Elsafty A., Teamah M.

Archive of Mechanical Engineering

|

2012

|

vol. 59

|

issue 3

19

INVESTIGATION OF HEAT TRANSFER IN INTEGRATED CIRCUITS

88%

Frankiewicz M., Gołda A., Kos A.

Metrology and Measurement Systems

|

2014

|

issue 1

20

Effect of Technological Parameters on the AlSi12 Alloy Microstructure During Crystallization Under Pressure

88%

Ščury J., Brůna M., Bolibruchová D., Pastirčák R.

Archives of Foundry Engineering

|

2017

|

vol. 17

|

issue 2

Refine search results

An investigation into the influence of different parameters on the onset of boiling in minichannels

Experimental and theoretical studies on heat and mass transfer in anti-condensation coatings

Application of the finite element method to the determining of boiling heat transfer coefficient for minichannel flow

Comparative study of flow condensation in conventional and small diameter tubes

The analysis of gradient algorithm effectiveness - two dimensional heat transfer problem

Investigations on heat and momentum transfer in CuO-water nanofluid

Heat transfer in falling film evaporators during the industrial process of apple juice concentrate production

Experimental research on the resistojet thruster heater

Study of the influence of the lack of contact in platefin and tube heat exchanger on heat transfer

Intensification of heat transfer between heat exchange surfaces at low RE values

The Effect of Regulating Elements on Convective Heat Transfer along Shaped Heat Exchange Surfaces

Quantification of the Radiative and Convective Heat Transfer Processes and their Effect on mSOFC by CFD Modelling

Numerical analysis of the steam flow field in shell and tube heat exchanger

The Effect of Regulating Elements on Convective Heat Transfer along Shaped Heat Exchange Surfaces

On the modulation frequency dependence of the photoacoustic signal for a metal coated glass-liquid system

Study of temperature distribution in the ground

Unsteady MHD boundary layer flow and heat transfer over the stretching sheets submerged in a moving fluid with Ohmic heating and frictional heating

Computational analysis for the effect of the taper angle and helical pitch on the heat transfer characteristics of the helical cone coils

INVESTIGATION OF HEAT TRANSFER IN INTEGRATED CIRCUITS

Effect of Technological Parameters on the AlSi12 Alloy Microstructure During Crystallization Under Pressure