Refrigeration efficiency analysis for fully wet semi-spherical porous fins

Hatami, M.; Ahangar, Gh.R. Mehdizadeh; Ganji, D.D.; Boubaker, K.

doi:10.1016/j.enconman.2014.05.007

Cited by 110 publications

(37 citation statements)

References 21 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Ackroyd [7] investigated the edge flows and fluid property variations for rectangular horizontal plates and Al-Arabi and El-Riedy [8] conducted further heat transfer studies on plates of various shapes, and observed both edge and corner effects, whereas Garcia-Ybarra and Trevino [9] analyzed the thermal diffusion effects of hydrogen-air mixtures within the development of a boundary layer on a hot flat plate. Heat transfer experimental studies have also been performed circular cylindrical conduit [12], on finned tubes to determine the effect on refrigeration efficiency [13], and basic analysis on a heated cylinder [18]. Although these experiments are slightly different than the current study, they agree with the general trends of heat transfer of the current study.…”

Section: Figure 1 Hot Surface Flow Mechanismsupporting

confidence: 78%

The fluid thermal field over a flat heated disk

Landers¹,

Disimile²,

Toy³

2017

IJHT

View full text Add to dashboard Cite

Numerous fires in the aviation community are typically initiated and sustained when a flammable fluid leaks onto a heated surface sometimes resulting in a catastrophic event. Due to the complex fluid thermal nature of these phenomena a two-prong effort was undertaken. Within this phase of the effort the focus is to provide insight into the fluid dynamic and thermal nature of a flow field induced by a heated surface. To this end the current work discusses the temperature and velocity fields immediately above a circular flat plate 20 cm diameter and which was heated to temperatures between 150 ℃ and 550 ℃. Both Schlieren and laser light sheet methodologies had been used to acquire data for qualitative and quantitative examination of the flow field. It has been found that the streamlines referred to as collision lines which emanate from the edge of the plate point radially inward towards the plates center. These lines connect and form cellular structures adjacent to the plates' surface. These cell-like structures appear to be reminiscent of Rayleigh Bernard type cells of either 5 or 6 sided constructions. In addition, at certain surface temperatures, pool boiling of the fluid is initiated; however, at even higher temperatures film boiling typically occurs which is thought to lead to ignition and flame propagation. The results concluded that as the distance increases from the plate the velocity of the vortical structures increases while the temperature decreases.

show abstract

Section: Figure 1 Hot Surface Flow Mechanismsupporting

confidence: 78%

The fluid thermal field over a flat heated disk

Landers¹,

Disimile²,

Toy³

2017

IJHT

View full text Add to dashboard Cite

show abstract

“…Bhowmik et al [10] applied both decomposition and differential evolution method for predicting dimensions of rectangular and hyperbolic fins with variable thermal properties. Hatami et al [11] presented the temperature distribution for a fully wet semi-spherical porous fin using Least Square Method (LSM) and fourth-order Runge-Kutta Method. Hatami and Ganji [12] investigated the temperature distribution for a circular wet porous fin using Least Square Method (LSM) and fourth-order Runge-Kutta Method.…”

Section: Introductionmentioning

confidence: 99%

A decomposition method for convective–radiative fin with heat generation

Roy

Mondal²,

Mallick

2015

Ain Shams Engineering Journal

View full text Add to dashboard Cite

This work is aimed at studying the effect of environmental temperature such as radiation sink temperature, convection sink temperature and heat generation number on the temperature distribution and efficiency of a convective-radiative stationary fin. The Adomian Decomposition Method (ADM) being one of the efficient numerical methods for highly non linear equations, the local temperature field and efficiencies are obtained using ADM in which Newton-Rapson method is used to estimate the fin temperature for insulated boundary conditions. It is found that the present ADM results are good agreement with the results available in literature using Galerkin Method (GM) and Boundary Value problem Method (BVP). Ó 2014 Production and hosting by Elsevier B.V. on behalf of Ain Shams University. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/3.0/).

show abstract

“…The comparative study of exponential vs straight wet fin has been carried out analytically by Turkyilmazoglu 12 . Hatami et al 13 considered the semi‐spherical fully wetted fin and scrutinized the efficiency and heat transfer. Different fin profiles in the fully wet porous condition were analyzed and also the combined mass and heat transfer was analyzed by Hatami and Ganji 14 .…”

Section: Introductionmentioning

confidence: 99%

Analysis of a fully wetted moving fin with temperature‐dependent internal heat generation using the finite element method

2020

View full text Add to dashboard Cite

The temperature field of a moving longitudinal porous fin with varying internal heat generation with respect to temperature has been studied under natural radiation and convection effects. The Darcy model was implemented for the analysis and the parameters, whose effect on the thermal process were grouped and nondimensionalized. By using the finite element method, the obtained highly nonlinear second order ordinary differential equations were numerically solved. The relevant parameters were studied by means of graphs and subsequently their importance in the rate of heat transfer was interpreted. K E Y W O R D Sinternal heat generation, longitudinal porous fin, moving fin, natural convection, radiation, thermal analysis

show abstract

Refrigeration efficiency analysis for fully wet semi-spherical porous fins

Cited by 110 publications

References 21 publications

The fluid thermal field over a flat heated disk

The fluid thermal field over a flat heated disk

A decomposition method for convective–radiative fin with heat generation

Analysis of a fully wetted moving fin with temperature‐dependent internal heat generation using the finite element method

Contact Info

Product

Resources

About