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Heat Transfer

Bulk Solids: Operating Direct-Contact Heat Exchangers

Bulk solids are frequently used as reactants, catalysts or products in chemical process industries (CPI) operations. Often, they must be heated or cooled so that they can be handled safely or processed at a desired temperature. Traditionally, heat transfer to…

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Burner Inspection and Maintenance

Burners are mechanical devices that are utilized for mixing proper quantities of fuel and air, and also for maintaining a stable flame inside fired equipment. Burners are critical components that must be periodically maintained to ensure the reliability of fired…

Safe Sampling of Heat-Transfer Fluids

Collecting representative samples of heat-transfer fluid for routine quality checks falls short of the goal if safety or the environment is compromised. While users should consider their systems’ unique design features in consultation with their safety and health experts, incorporating…

Advanced Control Methods for Combustion

Fuel combustion in engines, power plants, boilers, furnaces and other equipment provides energy for transportation, heating, electricity and goods manufacturing. Optimizing efficiency while lowering pollutant emissions is the main goal of industrial combustion, and reaching those goals, coupled with climate-change…

Heat or cool fibrous sludge with this tube-in-tube heat exchanger

This new tube-in-tube heat exchanger is designed for heating and cooling sludge that contains fibers and particles, making this equipment ideal for use with most kinds of wastewater sludge. The heat exchanger consists of a single tube mounted inside an…

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Unlocking the Secrets of Plate-and-Frame Heat Exchangers

Plate-and-frame heat exchangers, or plate heat exchangers (PHEs), are a type of compact heat exchanger. PHEs have been widely used in the food industries, mainly because they easily meet health and sanitation requirements due to their simple disassembly for cleaning.…

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A new tantalum line of heat exchangers for corrosive service

Last month, Alfa Laval AB (Lund, Sweden; www.alfalaval.com) introduced a new range of tantalum heat exchangers that offer the corrosion resistance of a solid-tantalum heat exchanger, but at a much lower investment cost. The heat exchangers are made of stainless…

A portable low-pressure steam generator with high throughput

The Steam-Flo SF-50 steam generator provides a portable source for low-pressure steam. The SF-50 features a 50 horsepower boiler unit and is capable of producing up to 1,725 lb/h (782 kg/h) of saturated steam vapor, operating at 15 psi. Available…

Pressurized Piping: Sampling Steam and Water

Corrosion and deposition in boilers, steam turbines and many types of process equipment are among the most expensive causes of outages in utility and industrial steam plants. Deposits and scale buildup on heat-transfer surfaces reduce efficiency, and when allowed to…

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Optimization of a Steam Network

Petroleum refineries generate power from a number of sources, including cogeneration plants and steam networks. Generally, steam networks use turbines to improve operational reliability, specifically as drivers for rotating equipment. Due to increasing energy costs, it is essential to maximize…