<abstract xmlns="http://www.w3.org/1999/xhtml"><p> The paper presents the results of calculations performed using the authors′ model to predict the heat transfer coefficient during flow boiling for two refrigerants R134a and R1234yf. The experimental data from various past studies have been collected and the calculations have been conducted for the full range of quality variation and a wide range of mass velocity. The aim of the study was to test the sensitivity of the in-house flow boiling and flow condensation model. The importance of taking into account the surface tension as the parameter exhibiting its importance in case of the flow in minichannels, as well as the influence of the reduced pressure were analysed. The obtained numerical results show good consistency with those recorded in the experiments.</p></abstract>

The paper presents the results of calculations performed using the authors′ model to predict the heat transfer coefficient during flow boiling for two refrigerants R134a and R1234yf. The experimental data from various past studies have been collected and the calculations have been conducted for the full range of quality variation and a wide range of mass velocity. The aim of the study was to test the sensitivity of the in-house flow boiling and flow condensation model. The importance of taking into account the surface tension as the parameter exhibiting its importance in case of the flow in minichannels, as well as the influence of the reduced pressure were analysed. The obtained numerical results show good consistency with those recorded in the experiments.

Calculation Method for Flow Boiling and Flow Condensation of R134a and R1234yf in Conventional and Small Diameter Channels

Polish Maritime Research

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

The paper presents the results of calculations performed using the authors′ model to predict the heat transfer coefficient during flow boiling for two...

Calculation Method for Flow Boiling and Flow Condensation of R134a and R1234yf in Conventional and Small Diameter Channels

Article Category: Special Issue Title: Coastal, Offshore and Ocean Engineering

Pubblicato online: 23 mag 2017

Pagine: 141 - 148

DOI: https://doi.org/10.1515/pomr-2017-0032

Parole chiave
heat transfer coefficient, flow boiling, conventional channels, minichannels

© 2017

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Calculation Method for Flow Boiling and Flow Condensation of R134a and R1234yf in Conventional and Small Diameter Channels

Article Category: Special Issue Title: Coastal, Offshore and Ocean Engineering

Pubblicato online: 23 mag 2017

Pagine: 141 - 148

DOI: https://doi.org/10.1515/pomr-2017-0032

Parole chiaveheat transfer coefficient, flow boiling, conventional channels, minichannels

© 2017

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Parole chiave
heat transfer coefficient, flow boiling, conventional channels, minichannels