Phase change behaviour study of PCM tanks partially filled with graphite foam

Zhao, Chunrong; Opolot, Michael; Liu, Ming; Bruno, Frank; Mancin, Simone; Hooman, Kamel

doi:10.1016/j.applthermaleng.2021.117313

Cited by 60 publications

(9 citation statements)

References 41 publications

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“…PCM handovers heat to sink liner and there to the basin water till PCM hardens totally. That PCM performances as temperature basis throughout less sunlight times also flat at darkness [17]. Still endures to harvest fresh water even night.…”

Section: Phase Changing Materials (Pcm)mentioning

confidence: 91%

Influence of Operating Parameters on Pyramid Solar Still with Phase Change Material (PCM)

Srinivas

Avssks

2021

IJRER

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In the recent scenario, distillation with solar still plays a vital role in obtaining potable water from brackish and sea water. The inspiration for this paper is the partial availability of clean water resources and the plenty of availability water due to potential renovation into filtered water using solar energy. In this paper, an attempt is made to study the productivity of pyramid solar still. To achieve this goal, a distillation system was fabricated which incorporates a square pyramid fiber glass placed on a black coated Aluminum basin. The solar radiation, which is incident on the black coated basin heats up the water and evaporates it forming vapors onto the fiber glass cover which is condensed to potable water. For analyzing the performance of still, the distillation system is operated at different water depths viz; 5 cm and 10 cm, along with paraffin wax material and preheated water, The experimental setup is placed at an angle of 50 degree to the horizontal. The hourly productivity is higher in case of solar still with PCM during sunny days. From the experimental analysis, it is observed that there is 75% increase in the efficiency of still, when operated with PCM, at 5 cm depth of water.

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Section: Phase Changing Materials (Pcm)mentioning

confidence: 91%

Influence of Operating Parameters on Pyramid Solar Still with Phase Change Material (PCM)

Srinivas

Avssks

2021

IJRER

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“…The proposed foam structure can reduce the temperature rise for a prolonged period. Zhao et al [24] incorporated PCM with partially filled metal foams to minimize the charging and discharging cycle. Four scenarios were investigated in their study such as foams filled separately at the top, bottom, left, and right of the enclosure.…”

Section: Introductionmentioning

confidence: 99%

Multi-Objective Optimization of Hybrid Heat Sinks with Phase Change Materials

Nedumaran

Gnanasekaran

et al. 2023

Heat Transfer Engineering

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A passive method with phase change material (PCM) is an appropriate technique in electronic cooling. But, due to its poor thermal conductivity, many enhancers are employed to reduce the thermal resistance offered by the PCM. A partial filling strategy to reduce the cost and weight of foams with fins is used in this study. A hybrid heat sink with a combination of fins placed at the sidewalls of the enclosure and foams filled at certain heights such as 10, 20, and 30 mm is considered in this present work. A two-dimensional numerical model with n-eicosane as PCM is developed in ANSYS Fluent 19. A multi-objective optimization is carried out using a reliable multi criteria decision making approach. Different weightage is distributed to the objective functions in this method depending on the choice of the user. The pore size and density vary for various filling heights, and 60 cases are investigated for both charging and discharging cycles. The pore size of 0.8-0.95 and pore density of 5-25 pores per inch with a broad range is considered. From the discussions, guidelines for selecting a preferable pore size and pore density can be determined based on the filling height and applied weightage.

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“…However, its low thermal conductivity is a vital reason for its slow charging and discharging efficiency. Therefore, a number of techniques are implemented to increase the thermal conductivity, for instance by using triplex tubes [13,14], fins [15,16], microencapsulation [17,18], nanoparticles [17,18], packed bed [19,20], metal foam [21,22], graphite foams [23,24], heat pipes [25] and thermal siphons [26].…”

Section: Introductionmentioning

confidence: 99%