Mobile Navigation

Heat Transfer

Member Exclusive

Making SunCatchers instead of cars

Stirling Energy Systems (SES; Phoenix, Ariz.; www.stirlingenergy.com) and Tessera Solar (Houston; www.tesserasolar.com) recently unveiled four, newly designed solar-power collection dishes at Sandia National Laboratories’ National Solar Thermal Test Facility (Albuquerque, N.M.). The refined design of SunCatchers will be used in…

Focus on Boilers & Steam Handling

These new resins are an alternative to metal boiler components In wall-hung condensing boilers for residential use, high-performance Noryl, Ultem and Cycoloy resins can replace traditional metals such as copper and brass used in boiler components, including condenser housings and…

Member Exclusive

The Shotgun Approach: Removal of Fouling Deposits on Heat Transfer Surfaces in Coal-Fired Process Heaters & Boilers

The heat transfer sufaces of coal-fired process heaters and boilers often undergo severe fouling. If left intact, such deposits, consisting of slag from mineral matter contained in the coal, can reduce heat-transfer-surface availability, reduce thermal efficiency and cause corrosion. If…

Member Exclusive

Add CaC2 to improve the efficiency of steelmaking furnaces

An innovation that improves the steelmaking efficiency of an electric arc furnace (EAF) by adding calcium carbide to the process has been developed by NuFlux, LLC (Warren, Ohio), a producer of steelmaking fluxes, and Carbide Industries LLC (Louisville, Ky.; www.carbidellc.com),…

Member Exclusive

A one-step process for extracting oil from algae…

Algae offer a ubiquitous, renewable source of oil for fuels and various chemical products ( CE, September 2008, pp. 22–25), but the extraction of oil from the algae cells is an energy-intensive process that involves dewatering and drying the biomass,…

Member Exclusive

Progress in underground coal gasification

The world’s first demonstration plant combining underground coal gasification and gas-to-liquids (GTL) technologies in the same facility was officially opened on April 22 in Chinchilla, 350 km northwest of Brisbane, Queensland, Australia. The plant is operated by Linc Energy Ltd…

Member Exclusive

A direct coal-liquefaction process goes commercial…

The world’s first commercial plant to produce liquid fuels by direct coal liquefaction is now being started up in Majata, Inner Mongolia, by Shenhua Group (Beijing). Designed to produce 25,000 bbl/d of syncrude from 4,300 metric tons per day (m.t./d)…

Petroleum Refiners Face Uncertain Future

Petroleum refiners throughout the world are faced with increasing uncertainty regarding future refining margins, crude prices and project costs. These factors, along with falling demand for refined products, a global recession, and tighter credit markets, are forcing global refiners to…

Focus on Heat Transfer

New line of blown film coolers are designed for warm climates The BFC Series of Blown Film Air Coolers offer an increase in blown film productivity, especially in warmer climates or other environments where ambient air temperature rises during the…

Member Exclusive

Engineering Practice: Optimal Cooling Systems For Coastal Plants

Because temperature control is important in any process, a water-cooling system is a common component in chemical processing plants. For facilities located near coastal areas, the tendency is toward the use of seawater instead of river water for cooling purposes.…