Premium
Convective condensation in a stator–rotor–stator spinning disc reactor
Author(s) -
de Beer Michiel M.,
Keurentjes Jos T. F.,
Schouten Jaap C.,
van der Schaaf John
Publication year - 2016
Publication title -
aiche journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.958
H-Index - 167
eISSN - 1547-5905
pISSN - 0001-1541
DOI - 10.1002/aic.15275
Subject(s) - condensation , heat transfer , rotor (electric) , heat transfer coefficient , stator , heat exchanger , mechanics , rotational speed , thermodynamics , chemistry , materials science , mechanical engineering , engineering , physics
Centrifugal intensification of condensation heat transfer in the rotor–stator cavities of a stator–rotor–stator spinning disc reactor (srs‐SDR) is studied, as a function of rotational velocity ω, volumetric throughflow rateϕ v , and average temperature driving force Δ T . For the current range of ω, heat transfer from the vapor bubbles to the condensate liquid is limiting, due to a relatively low gas–liquid interfacial area a GL . For ω > 84 rad s −1 , a strong increase of a GL , results in increasing the reactor‐average condensation heat transfer coefficient h c from 1600 to 5600 W m −2 K −1 , for condensation of pure dichloromethane vapor. Condensation heat transfer in the srs‐SDR is enhanced by rotation, independent of the vapor velocity. The intensified condensation comes at the cost of relatively high energy dissipation rates, indicating condensation in the srs‐SDR is more suited as a means to supply heat (e.g. in an intensified reactor‐heat exchanger), rather than for bulk cooling purposes. © 2016 American Institute of Chemical Engineers AIChE J , 62: 3784–3796, 2016