Cooling Towers, Part 2: Operating, Monitoring and Maintaining
Loraine Huchler
Process plants often use evaporative cooling towers to reject heat to the atmosphere.This article explains the basics of cooling tower operation.
Equipment
Reliability for Safety Instrumented Systems
J. Patrick Williams
This article offers a detailed reliability-based methodology for determining the safety integrity level of instrumented systems by providing overpressure protection where arrangements of multiple pressure-relief valves are impractical to implement.
Improving Reverse Osmosis Performance
Loraine Huchler
Follow these guidelines for monitoring, evaluating, and troubleshooting RO units to ensure reliable and efficient system operation.
Choose the Right Chemical-Resistant Glove
Julie Copeland
Many gloves offer protection from chemicals. This article will help you understand what type of glove can provide the best protection for your application.
Using Automation to Produce Quality Pharmaceuticals
Joseph S. Alford, P.E.
Automation can pay large dividends in the form of reduced process cycle times, lower operational costs, and more-consistent processes for manufacturing high-quality pharmaceutical products.
Converting a Commercial Distillation Column into a Research Tower
Ralph Weiland
Operating a column under actual distillation conditions is important for obtaining commercially valid hydraulic data. This article describes how a column was modified to operate in either a production or a research mode to collect hydraulic and mass...
Selecting Baffles for Shell-and-Tube Heat Exchangers
Salem Bouhairie
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.
Applying the Paradigm Case Method for Flowmeter Selection
Jesse Yoder
This effective approach to flowmeter selection involves a step-by-step method that begins by matching the application with the flowmeter(s). Then, a series of criteria are applied to narrow the selection.
Diagnosing Maldistribution in Towers
Simon X. Xu
Gamma CAT-scan technology makes possible the collection of much more vital online process information than conventional diagnostic techniques.
Harness Electricity to Operate Valves
Justin Ledger
Actuators automate valves by converting an input signal into motion. This article explains the basics of electric actuator design and explores the different types of electric actuators.
Principles and Practices of Chemical Reactor Design and Operations
Improve your ability to design unconventional reactor configurations – even when equations for them are not available – by adopting a new outlook and approach. Join chemical reactor technology expert Uzi Mann and gain knowledge and tools you can apply to the design of any reactor configuration with any number of reactions with any stoichiometry having any form of rate expression.
Assess the Performance of Positive-Displacement Pumps
AIChE's Equipment Testing Procedures Committee
Here's how to evaluate rotary pumps— gear, lobe, vane and multiple-screw designs— regardless of whether the material being handled is a Newtonian or non-Newtonian fluid.
Prepare Your Cooling System Before Startup
Paul R. Puckorius
Pre-startup actions such as initial water treatment and equipment coatings in cooling tower water systems can increase system life expectancy and efficiency, and reduce corrosion and fouling.
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