Process intensification in a spinning disk absorber for absorption heat pumps

Bangerth, Stefan; Tiwari, Ratnesh; Shooshtari, Amir; Ohadi, Michael M.

doi:10.1016/j.applthermaleng.2019.114179

Cited by 5 publications

(1 citation statement)

References 51 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The heat transfer performance can also be intensified. The combination of spinning disk and the manifold microchannel increased the overall heat transfer coefficient by a factor of 4.7 over a conventional tube bank absorber . For these merits, SDR has been used in many processes that need to intensify the micromixing performance, such as the synthesis of nanoparticles, polymerization, − photocatalysis, − enzymatic hydrolysis, biodiesel synthesis, − etc.…”

Section: Introductionmentioning

confidence: 99%

Configuration of a Premixer and Grooved Surface to Intensify the Micromixing Performance of a Spinning Disc Reactor

Tang,

Zhang,

et al. 2024

Ind. Eng. Chem. Res.

View full text Add to dashboard Cite

A premixer and grooved surface are designed to improve the micromixing performance of a spinning disc reactor (SDR). The inlets of the impinging jet provide an initial premixing of the two streams. The effects of premixing and grooved surface on the overall micromixing performance at different conditions are investigated systematically. The results show that premixing and trapezoidal groove surface could greatly intensify the global micromixing performance of SDR. Increasing the rotation speed and flow rate also significantly improves the micromixing effect. When the disc distance is lower than 0.80 mm, an extremely low inter disc distance deteriorates the micromixing. The effect of premixing on the micromixing performance of low viscosity streams is more significant than that of the spinning disc itself. However, for high viscosity streams, the micromixing performance strongly depends on the spinning disc. The flow patterns in the designed SDR were further studied. Three flow patterns, including film flow, film− filament transitional flow, and filament flow, were observed in SDR with a stator disc. High rotational speed, large disc spacing, and low volumetric flow rate are conducive to the formation of filament flow rather than film flow. Predicative dimensionless criteria for flow patterns were established. The results provide meaningful information for further intensifying the micromixing performance of SDR.

show abstract