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February 2012, Vol. 108, No. 2
In This Issue
UPDATE
Short News
New Bandage Spurs Blood Vessel Growth; Biomass-to-Chemicals Technology Receives U.S. Patent; Zeolite Boosts Aromatics Yield from Biomass; EPA Publishes the First GHG Emissions Tally; Biomimicry Goes Full Speed; Engineers Get Attached to Their Jobs; Quick-Cooking Nanomaterials Pave the Way to State-of-the-Art Refrigeration; Researchers Spin Carbon Fiber into Quantum Dots; Graphene Puts the Brakes on Overheating
HEAT TRANSFER
Selecting Baffles for Shell-and-Tube Heat Exchangers
Baffles play a crucial role in regulating shellside fluid flow and improving heat transfer between shellside and tubeside process fluids. Here’s how to choose the correct baffle to meet process requirements.
Salem Bouhairie
BACK TO BASICS
Environmental Law for Chemical Engineers
A basic understanding of environmental law is beneficial for all chemical engineers. Learn how laws are proposed, made, and implemented, and ways to avoid incurring unnecessary penalties.
Mary Ellen Ternes
FLUIDS AND SOLIDS HANDLING
Determining Torque Split for Multiple Impellers in Slurry Mixing
Yield-stress slurries, such as those used in paper, biofuel, and polymer production, can be difficult to mix. This article explains how to determine torque requirements for multiple-impeller slurry-mixing systems to optimize tank geometry and minimize power consumption.
Gregory T. Benz, P.E.