Effect of NiCo2O4-modified expanded graphite on heat transfer and storage improvement of CaCl2⋅6H2O

2022 ◽  
Vol 46 ◽  
pp. 103902
Author(s):  
Yixiu Xin ◽  
Hongen Nian ◽  
Jinhong Li ◽  
Jiaqing Zhao ◽  
Xiaoling Tan ◽  
...  
Keyword(s):  
Heat Transfer ◽  
Expanded Graphite ◽  
And Storage

Parameter Study and Dynamic Simulation of the DEMO Intermediate Heat Transfer and Storage System Design Using MATLAB®/Simulink

2021 ◽  
Vol 166 ◽  
pp. 112291
Author(s):  
Maria-Victoria Bologa ◽  
Evaldas Bubelis ◽  
Wolfgang Hering
Keyword(s):  
Heat Transfer ◽  
System Design ◽  
Dynamic Simulation ◽  
Storage System ◽  
Parameter Study ◽  
And Storage

Expanded graphite as heat transfer matrix in metal hydride beds

2003 ◽  
Vol 28 (5) ◽  
pp. 515-527 ◽  
Author(s):  
A RODRIGUEZSANCHEZ
Keyword(s):  
Heat Transfer ◽  
Transfer Matrix ◽  
Metal Hydride ◽  
Expanded Graphite

Numerical Investigation of Nitrate Leakage and Migration in the Soil after Rainfall

2014 ◽  
Vol 1010-1012 ◽  
pp. 429-436
Author(s):  
Jin Hua Shan ◽  
Jing Ding ◽  
Jian Feng Lu
Keyword(s):  
Heat Transfer ◽  
Thermal Power ◽  
Nitrate Salt ◽  
Storage Medium ◽  
Migration Process ◽  
Solar Thermal Power ◽  
Salt Layer ◽  
Thermal Power System ◽  
And Migration ◽  
And Storage

Nitrate salt is important heat transfer and storage medium in solar thermal power system, but nitrate salt leakage and pollution in groundwater is seldom investigated. In this paper, the nitrate salt leakage and migration in the soil after rainfall are simulated and analyzed. During the nitrate leakage process, the liquid nitrate will solidify, and then a thin solidification layer of nitrate forms. According to the simulation result, the radius of the leakage opening mainly affects the radius of nitrate solidification layer, while the leakage velocity will influence the radius and thickness of salt layer. During the nitrate migration process after rainfall, the nitrate will gradually migrate to the groundwater, and the final migration domain of nitrate in the soil will be mainly determined by the radius of nitrate solidification layer.

Heat Transfer and Storage

2015 ◽  
pp. 96-111
Keyword(s):  
Heat Transfer ◽  
And Storage

Preparation and Thermal Properties of High-Purified Molten Nitrate Salt Materials with Heat Transfer and Storage

2015 ◽  
Vol 34 (8) ◽  
Author(s):  
Hongtao Zhang ◽  
Youjing Zhao ◽  
Jingli Li ◽  
Lijie Shi ◽  
Min Wang
Keyword(s):  
Heat Transfer ◽  
Thermal Stability ◽  
Thermal Properties ◽  
Molten Salts ◽  
Operating Temperature ◽  
Nitrate Salt ◽  
Solar Salt ◽  
And Storage ◽  
Thermal Stability Of ◽  
Operating Temperature Range

AbstractThis paper focuses on thermal stability of molten salts, operating temperature range and latent heat of molten salts at a high temperature. In this experiment, multi-component molten salts (purified Solar Salt) composed of purified NaNO

HEAT TRANSFER AND EXTERNAL QUALITY ATTRIBUTES OF 'REGAL SEEDLESS' TABLE GRAPES INSIDE MULTI LAYERED PACKAGING DURING POSTHARVEST COOLING AND STORAGE

2013 ◽  
pp. 189-195 ◽  
Author(s):  
M.E.K. Ngcobo ◽  
M.A. Delele ◽  
U.L. Opara ◽  
G.D. Thiart ◽  
C.J. Meyer
Keyword(s):  
Heat Transfer ◽  
Quality Attributes ◽  
External Quality ◽  
Table Grapes ◽  
And Storage

Heat Transfer Enhancement of Phase Change Materials (PCMs) in Low and High Temperature Thermal Storage by Using Porous Materials

2010 ◽  
Author(s):  
C. Y. Zhao ◽  
D. Zhou ◽  
Z. G. Wu
Keyword(s):  
Heat Transfer ◽  
High Temperature ◽  
Phase Change ◽  
Porous Materials ◽  
Phase Change Materials ◽  
Heat Transfer Performance ◽  
Expanded Graphite ◽  
Metal Foams ◽  
Transfer Performance ◽  
Solid Liquid

In this paper the solid/liquid phase change heat transfer in porous materials (metal foams and expanded graphite) at low and high temperatures is experimentally investigated, in an attempt to examine the feasibility of using metal foams to enhance the heat transfer capability of phase change materials for use with both the low and high temperature thermal energy storage systems. In this research, the organic commercial paraffin wax and inorganic hydrate calcium chloride hydrate salts were employed as the low-temperature materials, while the sodium nitrate is used as the high-temperature PCM in the experiment. The heat transfer characteristics of these PCMs embedded with open-cell metal foams were studied experimentally. The composites of paraffin and expanded graphite with different graphite mass ratios, namely, 3%, 6% and 9%, were also made and the heat transfer performances of these composites were tested and compared with metal foams. Overall metal foams can provide better heat transfer performance than expanded graphite due to their continuous inter-connected structures. But the porous materials can suppress the natural convection effect in liquid zone, particularly for the PCMs with low viscosities, thereby leading to the different heat transfer performance at different regimes (solid, solid/liquid and liquid regions). This implies that the porous materials don’t necessarily mean they can always enhance heat transfer in every regime.

scholarly journals Heat Transfer Parameterization towards Enhancing Shelf Life of Vegetables in Low Cost Cold Chain with FACCC

2020 ◽  
Vol 9 (4) ◽  
pp. 822-829
Keyword(s):  
Heat Transfer ◽  
Nusselt Number ◽  
Shelf Life ◽  
Temperature Control ◽  
Low Cost ◽  
Surface Heat ◽  
Cold Chain ◽  
Air Flow Rate ◽  
Surface Heat Transfer Coefficient ◽  
And Storage

India is the second-largest vegetable producing country after China. It is observed that there is a huge loss of vegetables due to the lack of low-cost cold chain for its storage & transportation after harvesting from agriculture land to vegetable market. The shelf life of these vegetables is less due to poor temperature control during transportation and storage. If vegetables are not maintained at their prudent temperature, then they will lose their potency, which will lead to enormous economic loss. Therefore, it is observed that temperature control of vegetables and their heat transfer characteristics are a major factor to maintain potency and increase their shelf life. This paper proposed a low-cost design of FACCC for temperature control of vegetables during transportation and storage with the help of Chillers. Further, the effect of air velocity on heat transfer rate and Nusselt number of various vegetables was evaluated to predict the performance of FACCC for enhancing the shelf life of vegetables.Thermophysical characteristics of these vegetables have been calculated at different air flow rate with the help of Reynolds analogy as a function of Stanton Number, Reynold’s Number and Prandtl Number.The airflow rate was maintained between 0.2065 m/s - 0.413 m/s inside FACCC. Experimental study reveals that the average Nusselt Number of these vegetables lies in the range of 57.9 - 115.74 and the range of Surface heat transfer coefficient is 54.48-108.96 W/m2K. Validation of FACCC performance has been done by comparing the heat transfer rate and Nusselt number from published literature. These results are obtained by temperature control of vegetables by varying air flow rate through four fans fitted inside FACCC. It results in higher shelf life due to favourable maintenance of thermodynamic parameters such as surface heat transfer coefficient, Nusselt number, Reynold number and preferable temperature for specific commodities.Thus, the proposed FACCC model can be an effective tool for enhancement of low-cost cold chain for vegetables in future.

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