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Heat Transfer

Facts at your Fingertips: Heat-Transfer-System Maintenance During Slow Periods

Periods of reduced heat-transfer-fluid (HTF) system operation offer opportunities for mechanical integrity engineers to perform necessary maintenance. Here are suggestions for using the downtime for maintenance tasks. Safety These activities support ongoing safety of the HTF unit. Leak repairs. Repair…

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Low-Cost Techniques for NOx Reduction

An understanding of the available NOx-reduction strategies will help engineers to select the best technique to improve the performance of their combustion processes Pollution due to oxides of nitrogen — frequently abbreviated as NOx — is regulated with varying degrees…

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Turning Up the Heat on Valve Train Safety

Despite their nearly universal use in industrial combustion processes, valve trains are not widely understood. Here are some guidelines to help ensure their safe and effective operation Does your manufacturing facility have a smoke stack? If it does, it also…

Steam Quality Considerations

Steam often provides the majority of heat, but its quality is not always carefully managed. Here are some tips on how to improve and maintain steam quality Plant operations focus on production activity, maintaining tight control on process algorithms, feedstocks…

Gas Fermentation Leads Honored Achievements

The winning technology for the 2019 Kirkpatrick Chemical Engineering Achievement Award, along with the other finalist technologies, demonstrate how innovative engineering can tackle climate change and other challenges. All six technologies are described here The six finalist technologies for the…

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ASTM Standards For Heat Transfer Fluids

This practical overview of ASTM standards can serve as a roadmap when selecting and evaluating heat transfer fluids Heat-transfer-fluid systems are often used for process heating to 500°F or higher. To accomplish heating above 500°F, steam pressure must be above…

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Heat Exchangers: Designing for Super-critical Fluid Service

Working with supercritical fluids poses challenges when designing heat exchangers. Some practical tips and precautions are presented here Industrial applications involving fluids at high pressure — pressure above the critical pressure of a particular fluid — are increasing in number.…

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Nano-coated salts for energy storage

A new energy-storage process has begun operations at a large-scale pilot plant in Berlin, Germany. At the combined heat and power (CHP) facility of Swedish energy company Vattenfall, SaltX Technology AB (Hägersten, Sweden; www.saltxtechnology.com) constructed one 0.5-MW/10-MWh energy-storage unit using…

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Facts at your Fingertips: Convection versus Conduction Drying in Industry

Adjustment and control of moisture levels in solid materials is a critical aspect in the manufacture of many chemical products. Drying can be defined as the vaporization and removal of water or other liquids from a solution, suspension, or other…

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Facts at your Fingertips: Temperature Measurement with RTDs

Temperature measurement is critical in many types of process equipment, including reactors, distillation columns, furnaces, heat exchangers, evaporators, boilers and more. Among the most widely used instruments for measuring temperatures in chemical process industries (CPI) operations are resistance temperature detectors…