Numerical investigation of cross plate fin heat sink integrated with phase change material for cooling application of portable electronic devices

Abstract

The design of thermal management system needs to be made in such a way that can avoid the possible overheating and failure of electronic components because of higher power density. Thermal performance of heat sink (HS) configurations involving different number of cavities (1, 4, 9, 16, 25, and 36), formed by cross plate fins arrangement, as applicable to thermal management of electronic components, are studied numerically by employing pressure-based finite volume method. Mass and thermal capacity of each HS configuration are kept constant and various heat flux values (1.0, 1.5, and 2.0 kW/m 2 ) are used in the analysis.The performance of various HS configurations is evaluated based on the transient temperature variation of HS base, PCM melt fraction, average Nusselt number, and energy absorbed by PCM through both latent and sensible heat. The study also investigates the effect of various PCM materials on thermal performance of HS. Maximum 10 C of temperature reduction is achieved in case of HS with 25 cavities compared to HS with a single cavity. For HS with 36 cavities, the melting time of the PCM reduces by 46.5% with the increase in the heat flux values from 1.0 to 2.0 kW/m 2 . The study on effect of PCM type reveals that paraffin wax is ideally suited for those electronic devices which have the critical set point temperature (SPT) above 60 C and below 70 C.

Performance evaluation of concentrated photovoltaics with phase change materials embedded metal foam‐based heat sink using gradient strategy

“…PPI is one of the crucial parameters which affects the PCM-foam sink directly. For a given porosity, the lower values of PPI lead to foam with bigger pores, the reverse relationship between the size of the mean pores of foam and the PPI has been described earlier in Equation (11). The bigger pores, the higher the natural convective heat rate.…”

“…9 Such a disadvantage increases PCM's melting time and creates a hightemperature zone near the heat source with nonuniform temperature distribution. To improve the thermal performance of PCM, a composite of PCM with nanoparticles, 10 fins, 11 or foam 12 has been proposed by researchers.…”

Recent Progress in Polyethylene‐enhanced Organic Phase Change Composite Materials for Energy Management

“…Thermal energy management is a topic with applications in several industrial fields, such as temperature regulation in green buildings, [1][2][3][4][5][6][7] prevention of overheating in electronic devices, [8][9][10][11][12] and heat and energy harvesting. [13][14][15][16][17] Various methods have been researched and employed with the goal of attaining high efficiency and a low carbon footprint in alignment with the goal of sustainability.…”

Thermal Management of the Melting Process in a Latent Heat Triplex Tube Storage System Using Different Configurations of Frustum Tubes

“…Accordingly, various techniques have been modelled to improve the heat transfer efficiency of the PCM during the charging and discharging methods [18]. These techniques include a combination with the high conductive materials (nanoparticles) [19][20][21][22][23], utilizing an extended surface area for the heat transfer (fins) [21,[24][25][26], combinations with the metal foam [27][28][29][30][31], and using more efficient geometries designs [28,32,33]. Moreover, natural convection is a critical mechanism that can assist the phase change heat transfer in molten regions.…”

“…Using smaller values for the gap width between the tubes currying the heat-transfer fluid (HTF) increases the heat-exchanging areas between the PCM and HTF in charge. Therefore, the frustum tube configurations with smaller gap widths have a better potential for enhancing the PCM thermal response during the melting process (3) In comparison to the straight tube configuration, the total melting times could be saved by25.6, 14.2, 11.8, 23.1, 17.5, 19.0, 23.0, and 14.9% for the studied cases from 1 to 8, respectively. The results also indicate that the heat storage rate for the same studied cases could be raised by 32.8%, 16.1%, 13.1%, 29.0%, 21.0, 21.7, 29.1%, and 17.3%, respectively…”