Silica nanoparticles (1% by weight) were dispersed in a eutectic of lithium carbonate and potassium (62:38 ratio) to obtain high temperature nanofluids. A differential scanning calorimeter instrument was used measure the specific heat neat molten salt after addition nanoparticles. The nanofluid enhanced 19–24%. measurement uncertainty for values experiments is estimated be range 1–5%. These experimental data contradict earlier results reported literature. (Notably, stability samples not...

Experiments were performed using a flow-loop apparatus to explore the performance of nanofluids in cooling applications. The experiments exfoliated graphite nanoparticle fibers suspended polyalphaolefin at mass concentrations 0.6 and 0.3 %. experimental setup consisted test section containing plain offset fin cooler (gap or nongap fin), which was connected flow loop consisting gear pump, shell tube heat exchanger (that cooled heated by constant temperature bath chiller/heater), reservoir....

Anomalous enhancements in the specific heat capacity values of nanomaterials were measured this study. Silica nanoparticles (∼2–20 nm) dispersed into eutectic lithium carbonate and potassium (62:38 by molar ratio) at 1.5% mass concentration. The measurements performed using a differential scanning calorimeter (DSC). silica nanocomposite (solid phase) was enhanced 38–54% nanofluid (liquid 118–124% over that pure eutectic. Electron microscopy samples shows induce phase change (forms higher...

In this study, two silicon wafer substrates were coated with vertically aligned multiwalled carbon nanotubes (MWCNT) “forests” and used for pool boiling studies. The MWCNT forests (9 25μm in height) synthesized on the using chemical vapor deposition (CVD) process. clamped a cylindrical copper block embedded cartridge heaters. heat flux was measured sheathed K-type thermocouples, which placed inside block. Pool experiments refrigerant PF-5060 as working liquid conducted to obtain “boiling...

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSpectrophotometric Determination of Traces Peroxides in Organic Solvents.D. K. Banerjee and C. BudkeCite this: Anal. Chem. 1964, 36, 4, 792–796Publication Date (Print):April 1, 1964Publication History Published online1 May 2002Published inissue 1 April 1964https://pubs.acs.org/doi/10.1021/ac60210a027https://doi.org/10.1021/ac60210a027research-articleACS PublicationsRequest reuse permissionsArticle Views617Altmetric-Citations67LEARN ABOUT THESE...

Controversial results have been reported for specific heat of conventional nanofluids and molten salt nanofluids. Some water-based organic-based showed decreases in heat, while salt-based highly enhanced heat. In this study, we propose a distinct storage mechanism to explain compare with the

This study aims to investigate the specific heat capacity of a carbonate salt eutectic-based multiwalled carbon nanomaterial (or high temperature nanofluids). The nanomaterials was measured both in solid and liquid phase using differential scanning calorimetry (DSC). effect nanotube (CNT) concentrations on examined this study. molten eutectic with melting point around 490 °C, which consists lithium 62% potassium 38% by molar ratio, used as base material. Multiwalled CNTs were dispersed...

Pool boiling experiments were conducted with three horizontal, flat, silicon surfaces, two of which coated vertically aligned multiwalled carbon nanotubes (MWCNTs). The wafers MWCNT different thicknesses: 9 μm (Type-A) and 25 (Type-B). Experiments for the nucleate film regimes saturated subcooled conditions liquid subcooling 0–30°C using a dielectric fluorocarbon (PF-5060) as test fluid. pool heat flux data obtained from bare surface used base line all transfer comparisons. Type-B coatings...

The effect of nano-structured surfaces on pool boiling was investigated. Saturated and subcooled experiments were performed a horizontal heater surface coated with vertically aligned multiwalled carbon nanotubes (MWCNTs). MWCNTs synthesized using the chemical vapor deposition (CVD) process. In this paper, MWCNT forests two distinctly different heights (Type A: 9-mum height, Type B: 25-mu m height) separately silicon wafers. PF-5060 used as test liquid. results show that Type-B yield higher...