Current Issue

Advanced NanoMaterials and Technologies for Energy Sector – AdvNanoEnergy – 2019: 3(1) is now being populated with papers. Thank you for all the contributors and reviewers. The full list of the published papers can be find at Archive.

Nowadays, due to limited energy reserves that are available, saving energy in appropriated form is becoming a challengeable subject. One of the new and efficient ways in the field of thermal energy storage (TES) is using of phase change materials (PCM). This paper was examined the effects of two variables including weight percentage of Borax (Borax wt%), and Super Absorbent Polymer (SAP wt%) on the properties of salt hydrates based on Na2SO4.10H2O as PCM. Each variable had five different levels. Response surface methodology (RSM) was used for statistical design and analysis of experiments and process modeling. 2FI and Quadratic models were used for prediction of supercooling and phase segregation, respectively. Among the variables, weight percentage of Borax had a significant effect on supercooling, while the weight percentage of SAP affected phase segregation. In the process of optimization, minimum of supercooling and elimination of phase segregation were predicted at Borax wt% of 10% and SAP wt% of 4.16%.

 

In the recent years, the application of nanotechnology for the upstream petroleum has got enormous research attention. The goal of this paper is to focus on the effect of injection rate of water, nanofluid concentration, and particle size of nanoparticles on oil recovery factor during nanofluid injection into oil reservoir. A mathematical model and numerical simulation are presented to describe the imbibition of nanoparticles–water suspension into two-phase flow in a porous medium. Also, parameters such as injection flow rate, nanofluid concentration, and average particle size of nanoparticles are optimized via differential evolution (DE) algorithm as an effective and robust optimization method to maximize oil recovery factor as the objective function.