Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
660430 | International Journal of Heat and Mass Transfer | 2010 | 15 Pages |
Abstract
Naphthalene thermosyphons are efficient heat transfer devices that operate within 250 and 400 °C. There is a lack of literature about naphthalene thermosyphons, especially with the presence of non-condensable gases (NCG). Thermal circuit resistance models, considering or not NCG, are developed. NCG–vapor flat front hypothesis is adopted. Condensation and evaporation heat transfer coefficients are obtained from literature correlations. Thermal resistance data provided from naphthalene thermosyphon charged with argon, is obtained using especial experimental setup. Two combinations of correlations provided good comparison with data, for thermosyphons with and without NCG. These models are successfully applied for heat exchanger design.
Keywords
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Fluid Flow and Transfer Processes
Authors
Marcia Barbosa Henriques Mantelli, Wagner Barbosa Ângelo, Thomaz Borges,