Good day all. I will appreciate it if anyone understand how the average film coefficients for heat exchangers tube side and shell side coefficients are estimated from the local heat transfer coefficients data in aspen EDR. The calculation details in Aspen EDR provides the interval analysis table which contains the local heat fluxes, local film coefficients, void fraction, vapour fraction, bulk temperature, skin temperature, etc. From the aspen edr help files, it is mentioned that the tube side or shell side film coefficient is the average value of the film coefficients. I've tried arithmetic and geometric mean but none seem to give me the value reported in EDR result summary. I have also adapted the method outlined in HTRI to the EDR data and this also did give a good prediction. any helpful tips or suggestions will be appreciated.
Red Flag Submitted
Thank you for helping keep Eng-Tips Forums free from inappropriate posts. The Eng-Tips staff will check this out and take appropriate action.
Reply To This Thread
Posting in the Eng-Tips forums is a member-only feature.
Learn methods and guidelines for using stereolithography (SLA) 3D printed molds in the injection molding process to lower costs and lead time. Discover how this hybrid manufacturing process enables on-demand mold fabrication to quickly produce small batches of thermoplastic parts. Download Now
Examine how the principles of DfAM upend many of the long-standing rules around manufacturability - allowing engineers and designers to place a partâ€™s function at the center of their design considerations. Download Now
Metal 3D printing has rapidly emerged as a key technology in modern design and manufacturing, so itâ€™s critical educational institutions include it in their curricula to avoid leaving students at a disadvantage as they enter the workforce. Download Now
This ebook covers tips for creating and managing workflows, security best practices and protection of intellectual property, Cloud vs. on-premise software solutions, CAD file management, compliance, and more. Download Now