Archives :: Processing & Handling :: Thermal & Energy Management :: Heat Exchangers, Condensers & Coolers

Displaying 61 - 77 of 77 stories.
June 15, 2008
Applications Dehumidification by cooling or dessication has a variety of applications, including: Preventing moisture regain. Nearly all materials have some affinity for moisture based on surface characteristics and the amount of surface exposed to humid air. Moisture regain occurs when moist particles stick together. Preventing condensation. Air holds water vapor in proportion to its temperature. Cold...
May 15, 2008
Carbone Lorraine (CL; Paris, France; is launching a new welded-plate heat exchanger, dubbed Heatex, which features plates made of tantalum CL-Clad. The patented CL-Clad technology involves the brazing of steel onto "reactive" metals, such as tantalum, titanium and zirconium, in order to fabricate columns, reactors and (now) heat exchangers used in corrosive service. Such...
May 7, 2008
Only one month after the acquisition of GEA ViEX Inc. Canada (, the company has received a significant order for GEABloc custom-designed fully welded heat...
April 23, 2008
GEA Group AG (Bochum, Germany; has further strengthened its Process Equipment division through the acquisition of the Dutch company Bloksma (Almere, Netherlands). Bloksma manufactures intercoolers for marine engines, oil coolers for industrial applications, double-pipe coolers for various industrial processes, and a special cooler for marine engines, so-called box coolers, which are...
April 14, 2008
Batch reactor systems are used extensively in the pharmaceutical and fine chemical industries for the manufacture of small-volume, high-value products, in either dedicated or multipurpose production facilities. Stable and reproducible operating conditions are of great importance in order to achieve the batch times, optimum yields and product purity required to satisfy commercial requirements and the...
March 21, 2008
GEA PHE Systems, Inc. (York, Pa.; a leading international supplier of plate heat exchangers (PHE), has acquired the assets of Canadian PHE specialist ViEX, based in Newmarket near Toronto. Hence, GEA continues their successful growth path and now offers the most extensive range of brazed, gasketed and fully welded PHE. ViEX emerged from Nixon Plate Coils Ltd., founded in 1954 in Toronto...
March 15, 2008
The batch reactor is the workhorse of the fine chemical and pharmaceutical industries. Within it, many different unit operations are performed such as chemical reactions, bioreactions, crystallization, distillation and dissolution. Despite their significance to the industry, batch reactors have been controlled by the same underlying method for the past 50 years. This article discusses a relatively...
March 15, 2008
Tube plugging is probably the most frequently used maintenance and repair technique for the tube side of an exchanger. This article provides information on how to locate the positions of tube failures and discusses why it is important to know such information. It describes how to find out where the tubes failed and explains how to analyze what caused failures, seen from the tube side. Descriptions of...
February 15, 2008
Hydrocarbon leaks can disrupt recirculated cooling-water systems. Here’s an outline of effects and remedies Water is often the fluid of choice for cooling systems in the chemical process industries (CPI). Recirculated cooling-water systems are used to control the temperature of process fluids, which is necessary for process control and to achieve target product yields and specifications. Hydrocarbon...
December 15, 2007
As the price of electricity, natural gas and other fossil fuels continues to climb, chemical processors are more closely examining high-temperature operations and heat-transfer systems to see if more efficiency can be had. In many cases it can, and, as a result, heat-transfer projects are not only justifiable, but downright attractive. "Traditionally we used to see chemical processors looking at their...
August 1, 2007
Researchers from the fluid-dynamics laboratories at CSIRO Manufacturing and Materials Technology (Melbourne, Australia; have developed a new heat-exchange technology, called RAMeX, which performs heat exchange and mixing of highly viscous fluids without stirrers, impellers, baffles and plates. Like the Rotated Arc Mixer (RAM; CE, February 2001, p. 17) from which it evolved, the...
March 1, 2007
    The use of shell-and-tube heat exchangers is widespread in the chemical process industries (CPI). In applications where contact between shell- and tube-side fluids is not tolerable, it is important for the engineer to understand some of the design details that ensure leak tightness. In his work, the author has found a great deal of literature that addresses the strength and tightness of tube...
August 1, 2006
    Heat transfer takes place in every plant in the chemical process industries (CPI), and in a significant proportion of individual equipment items. And of the many varieties of heat exchanger, shell-and-tube versions must surely be the most traditional. Doyle & Roth Mfg. Co. Inc. (New York) has been serving the process industries since 1932, and supplies a full range of shell-and-tube...
June 1, 2006
Alfa Laval AB (Lund, Sweden; has developed a new reactor system, called Alfa Laval Plate Reactors (trademarked as ART), which combines the high-heat-transfer capabilities of plate heat exchangers with the efficient mixing and reaction control typical of microreactors into a single unit. Because of the high heat and mass transfer achieved in the system, the working inventory of...
May 1, 2006
Continuously measure chlorine in water The Model TCL (photo, upper left) is a complete system for the measurement of total chlorine in water. Comprised of a sample conditioning system, an analyzer and a sensor, this system provides continuous measurement and was designed to minimize maintenance requirements and operating costs. The sample conditioning system continuously injects a solution of acetic acid...
February 1, 2006
Last month, Aspen Technology, Inc. (Cambridge, Mass.; launched its new generation of applications for the design, rating and simulation of heat exchangers: Aspen Tasc+, for shell-and-tube heat...
January 1, 2006
    Immersion heaters are used in a wide variety of applications in the chemical process industries (CPI). Knowing which heater to specify for a particular application and how to maintain it can make a manufacturing process more cost-efficient. This article describes the types of immersion heaters available, explains how to select them and provides guidance on installing and using the heaters. As...
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