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Research Update: Guidelines for Vertical Tubeside Thermosiphon Reboiler Turndown Webinar

May 28, 2020 | 10:30 AM CDT (UTC -05:00)


Thermosiphon reboilers often pose challenges for column operations in refineries and chemical processing plants. Some challenges are related to turndown, when reboiler circulation rates or duties are lower than design conditions. The process industry uses various checklists and criteria, though most guidelines have little to no validating data backing them up. In this webinar, we discuss important criteria for identifying limits of turndown for vertical tubeside thermosiphon reboilers, present some recent turndown data collected at HTRI, and evaluate the validity of these criteria. We also share new HTRI criteria based on the data.

Registration Deadline: May 26, 2020



Facilitated by Siddharth Talapatra

Siddharth talapatra

Group Lead, Research, earned his MS and PhD in Mechanical Engineering from The Johns Hopkins University, Baltimore, Maryland, USA. During his graduate studies, he was a Research Assistant at the Laboratory for Experimental Fluid Dynamics, where he worked on projects involving turbulence, effects of surface roughness, fluid structure interaction, and oceanography using high-speed imaging, particle image velocimetry, and holography. His dissertation research focused on elucidating coherent structures in the nearwall region for a rough channel flow, and understanding the key biophysical interactions in the coastal ocean. Talapatra also holds a BS degree in Mechanical Engineering from Indian Institute for Technology, Kharagpur, India. At HTRI, his primary research responsibilities are focused on qualitative and quantitative flow visualization and laser anemometry to examine single- and two-phase flow inside pipes and heat exchangers. His research activities also include the study of shellside condensation, subcooled condensation, and thermosiphon reboiler turndown and instabilities. Talapatra is actively involved with HTRI’s training efforts, including development of new courses.