scholarly journals Experimental Study of Natural Convection in a Closed Cavity (Static Type Domestic Fridge)

2021 ◽  
Vol 27 (10) ◽  
pp. 1-19
Author(s):  
Maryem Kanaan Adnan ◽  
Munther Abdullah Mussa
Keyword(s):  
Numerical Simulation ◽  
Experimental Study ◽  
Natural Convection ◽  
Thermal Radiation ◽  
Velocity Distribution ◽  
Thermal Flow ◽  
Closed Cavity ◽  
Glass Door ◽  
And Behavior ◽  
Temperature And Flow Fields

This work provides an analysis of the thermal flow and behavior of the (load-free) refrigerator compartment. The main goal was to compare the thermal behavior inside the refrigerator cavity to the freezer door (home refrigerator) effect and install a fan on the freezer door while neglecting the heat transmitted by thermal radiation. Moreover, the velocity distribution, temperature, and velocity path lines are theoretically studied. This was observed without affecting the shelves inside the cabinet and the egg and butter places on the refrigerator door as they were removed and the aluminum door replaced with a glass door. This study aims to expand our knowledge about the temperature and flow fields of this refrigerator model. Finally, the development of this work highlights the importance of numerical simulation in the search for improvements in the design of this refrigerator model, which may assist refrigerator manufacturers.

Heat and Mass Transfer at Low Temperatures, in a Trapezoidal Closed Cavity

2012 ◽  
Vol 550-553 ◽  
pp. 2996-3003 ◽  
Author(s):  
M.S. Maalem ◽  
A. Benzaoui
Keyword(s):  
Numerical Simulation ◽  
Mathematical Model ◽  
Experimental Study ◽  
Low Temperatures ◽  
The Other ◽  
Flowing Water ◽  
Closed Cavity ◽  
Nusselt Numbers ◽  
Future Paper ◽  
The Mean

An experimental study, in a trapezoidal closed cavity had been led in our laboratory. The considered cavity includes a vaporizing horizontal surface, two condensing ones; one is of glass and the other of aluminium surface. It is cooled down by flowing water. The other walls are thermally isolated. Acquired results allowed to identify the regime of air flow inside the cavity, to assess the mean exchange coefficients of heat and mass, across the three walls and to write a correlation for the mean Sherwood and Nusselt numbers, established for laminar flow regime. These results are important to model many solar uses as solar distillers, solar dryers, etc… We present, in this report experimental results and in a future paper, the written mathematical model and a numerical simulation.

Numerical and Experimental Study of the Natural Convection in a Tall Closed Cavity

2011 ◽  
pp. 83-90 ◽  
Author(s):  
Jesús Benito Pérez Valenzuela ◽  
Armando Piña Ortiz ◽  
Jesús Fernando Hinojosa Palafox ◽  
Rafael E. Cabanillas López
Keyword(s):  
Experimental Study ◽  
Natural Convection ◽  
Closed Cavity

Theoretical and experimental study of natural convection with surface thermal radiation in a side open cavity

2015 ◽  
Vol 75 ◽  
pp. 1176-1186 ◽  
Author(s):  
M. Montiel-González ◽  
J.F. Hinojosa ◽  
H.I. Villafán-Vidales ◽  
A. Bautista-Orozco ◽  
C.A. Estrada
Keyword(s):  
Experimental Study ◽  
Natural Convection ◽  
Thermal Radiation ◽  
Open Cavity

scholarly journals Numerical and Experimental Study of Natural Convection in a Tunnel Greenhouse Located in South West Algeria (Adrar Region)

2021 ◽  
Vol 39 (5) ◽  
pp. 1575-1582
Author(s):  
Mohammed Salah Belalem ◽  
Mohammed Elmir ◽  
Mohammed Tamali ◽  
Razli Mehdaoui ◽  
Abdelkrim Missoum ◽  
...  
Keyword(s):  
Numerical Simulation ◽  
Experimental Study ◽  
Natural Convection ◽  
Numerical Study ◽  
Heating System ◽  
Laminar Regime ◽  
The Finite Element Method ◽  
Tomato Plants ◽  
South West ◽  
West Algeria

In this work, we propose to experimentally and numerically study the natural convection in laminar regime in an agricultural greenhouse located in South West of Algeria and more precisely in the Adrar area. The numerical study is two-dimensional and was carried out on a tunnel greenhouse with an area of 180m2 located in Adrar in the southwest of Algeria (Latitude: 27°52′27″N, longitude: 0°17′37″W, the laltitude above sea level is 257 m), with polyethylene cover and houses two rows of tomato plants. The experimental study was made during the winter or flowering period of tomato plants (February) when the temperature difference outside the greenhouse is maximum: T min = 3℃ at night and T max = 20℃ the day. We used a calculate code based on the finite element method to numerically simulate the phenomenon of heat transfer inside the greenhouse. The results of the numerical simulation are in the form of isotherms, streamlines and variations in temperature and speed in the greenhouse. The value of the temperature calculated by numerical simulation at the position where the sensor has been placed will be compared with that measured by the sensor. It was concluded that to have a favorable environment for the growth of tomatoes, we must keep the openings closed especially during the night without needing a heating system, especially in this region characterized by a hyper arid climate.

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