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

Displaying 41 - 60 of 74 stories.
July 7, 2010
GEA PHE Systems (Sarstedt, Germany; www.gea-phe.com), part of the GEA Heat Exchangers Segment, received an order for a South American grassroots petroleum refinery project. The multimillion-euro order covers design and manufacturing of GEABloc welded plate heat exchangers. The new refinery will process local crude oil to supply the domestic market with high quality diesel...
http://www.che.com/processing_and_handling/thermal_and_energy_mgmt/heat_exchangers_condensers_and_coolers/GEA-PHE-Systems-receives-refinery-order-_5836.html
June 1, 2010
Like other aspects of chemical processing, cooling operations are being closely examined for ways to reduce costs and resource usage. Whether it’s cooling towers or industrial gases, experts say embracing new technologies makes it possible to get more bang for your cooling buck. Cooling technologies Currently, the fleet of cooling towers in the chemical process industries (CPI) is fairly old and a...
http://www.che.com/processing_and_handling/thermal_and_energy_mgmt/heat_exchangers_condensers_and_coolers/Process-cooling-Just-Cool-It!_5724.html
May 1, 2010
Gooch Thermal Systems Spiral plate heat exchangers are ideal for cooling slurries and viscous fluids. The performance of these units is characterized by increased turbulent heat transfer, reduced fouling, greater ease of maintenance, and more compact size compared to many competing options. In a spiral plate heat exchanger, the hot fluid enters at the center of the unit and flows from the inside outward...
http://www.che.com/processing_and_handling/thermal_and_energy_mgmt/heat_exchangers_condensers_and_coolers/Spiral-Plate-Heat-Exchangers-Sizing-Units-for-Cooling-Non-Newtonian-Slurries_5634.html
April 1, 2010
As heat exchangers age, their tube thickness decreases because of erosion, corrosion or a combination of both. Installing thin sleeves in tubes in which the tube walls have become so thin that failure is imminent is a maintenance technique useful for extending heat exchanger life. One should consider sleeving when: (1) it would be very costly to replace aged exchangers because of the installation position...
http://www.che.com/processing_and_handling/thermal_and_energy_mgmt/heat_exchangers_condensers_and_coolers/Full-Length-Sleeving-for-Process-Heat-Exchanger-Tubes_5568.html
February 1, 2010
A survey of tower failures [ 1 ] ranks kettle reboilers as the most troublesome reboiler type in the chemical process industries (CPI). Excessive pressure drop in kettle reboiler circuits is the prominent kettle malfunction, causing liquid to back up in the tower base beyond the reboiler return elevation. This high liquid level leads to premature flooding and capacity loss. In almost all the surveyed...
http://www.che.com/processing_and_handling/thermal_and_energy_mgmt/heat_exchangers_condensers_and_coolers/Kettle-Troubleshooting_5453.html
September 1, 2009
Click here for full pdf version of this article - includes all graphs, charts, tables, and author information EXPANSION TANK A well designed expansion tank: 1. Maintains a static pump-suction head 2. Compensates for temperature-related volume and pressure changes 3. Provides a means of venting moisture and low boilers 4. Prevents fluid oxidation Usually, the expansion tank is installed at the highest point...
http://www.che.com/processing_and_handling/thermal_and_energy_mgmt/heat_exchangers_condensers_and_coolers/Heat-Transfer-System-Design-II_5051.html
August 1, 2009
Cooling water systems that rely on cooling towers are a critical component at chemical process industries (CPI) facilities. However, during operation, these open recirculating systems concentrate the contaminants in the makeup...
http://www.che.com/processing_and_handling/thermal_and_energy_mgmt/heat_exchangers_condensers_and_coolers/Keeping-Cooling-Water-Clean_5005.html
May 1, 2009
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 summer. The Series boosts productivity by eliminating production variables in air ring supply, including air temperature, pressure and volume. A modulated...
http://www.che.com/processing_and_handling/thermal_and_energy_mgmt/heat_exchangers_condensers_and_coolers/Focus-on-Heat-Transfer_4763.html
May 1, 2009
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. Seawater has the advantage of having nearly a constant quality (chemical analysis), nearly a constant temperature and is available in large...
http://www.che.com/processing_and_handling/thermal_and_energy_mgmt/heat_exchangers_condensers_and_coolers/Engineering-Practice-Optimal-Cooling-Systems-For-Coastal-Plants_4770.html
February 12, 2009
The new NT 500 plate heat exchanger sets new performance standards with a volume flow of up to 4,500 m3/h. The steel frame can hold up to a thousand plates, and the largest version is 4.7-m high and 1.6-m wide. The unit is available in...
http://www.che.com/processing_and_handling/thermal_and_energy_mgmt/heat_exchangers_condensers_and_coolers/This-heat-exchanger-holds-up-to-a-thousand-plates-in-its-frame_4530.html
February 1, 2009
Global warming is of major concern today. There is increasing pressure on industry to reduce both energy usage and the associated CO2 emissions. An important and profitable action that industry can take is to recover more process energy and thus improve the efficient use of that energy. This not only reduces the cost of primary energy supply and lowers CO2 emissions, but also provides benefits in terms of...
http://www.che.com/processing_and_handling/thermal_and_energy_mgmt/heat_exchangers_condensers_and_coolers/Compact-Heat-Exchangers-Improving-Heat-Recovery_4500.html
February 1, 2009
The use of gasketed plate-and-frame heat exchangers has gained tremendous acceptance in the chemical process industries (CPI) over the past 20 years due to their high heat-transfer coefficients, compactness and low cost. However, it is important for the engineer who is selecting this type of heat exchanger to be aware of critical areas in design or selection so that possible operating or maintenance...
http://www.che.com/processing_and_handling/thermal_and_energy_mgmt/heat_exchangers_condensers_and_coolers/Plate-Heat-Exchangers-Avoiding-Common-Misconceptions_4501.html
December 1, 2008
In a fired thermal fluid heater, a thermal fluid is heated by the metal surfaces of a fired heater or fluegas heat-recovery exchanger. Generally, the heat input rate is controlled to achieve some desired bulk-fluid temperature exiting the heater. However, in being heated to the outlet setpoint, the fluid film in contact with the heating surface is always exposed to a higher temperature than the bulk fluid...
http://www.che.com/processing_and_handling/thermal_and_energy_mgmt/heat_exchangers_condensers_and_coolers/Cover-Story-Part-1-Heat-Flux-And-Film-Temperature-In-Fired-Thermal-Fluid-Heaters_4384.html
December 1, 2008
Organic-based thermal fluids provide relatively trouble-free service for significant periods of time. However, there comes a time when any fluid (either aromatic- or aliphatic-based) needs to be replaced. Since aromatic-based fluids generally cost more and are complicated to dispose of, they receive far more attention than aliphatic-based fluids when the time comes for replacement. Aliphatic-based fluids...
http://www.che.com/processing_and_handling/thermal_and_energy_mgmt/heat_exchangers_condensers_and_coolers/Cover-Story-Part-2-Heat-Transfer-Fluids-Maintaining-the-System_4385.html
December 1, 2008
ESK Ceramics GmbH & Co. KG (Kempten, www.esk.com), together with Pfaudler Werke GmbH (Schwetzingen, both Germany; www.pfaudler.de), has launched a new plate heat exchanger made of silicon carbide. ESK is producing the ceramic heat exchangers on a large scale for the first time, and Pfaudler will handle global sales of the components. Three different models are available — sealed, semi-welded and...
http://www.che.com/processing_and_handling/thermal_and_energy_mgmt/heat_exchangers_condensers_and_coolers/Chementator-Ceramic-heat-exchangers-offer-more-than-corrosion-resistance_4399.html
November 1, 2008
A very common heat exchanger in the chemical process industries (CPI) is the vertical thermosiphon reboiler (VTR; Figure 1). Due to size and fluid-flow restrictions, however, its heat transfer rate is often quite low. The subcooled region formed at the thermosiphon’s tube-bundle base usually causes reduction in the tubes’ average heat-transfer coefficient. Improvements in performance can be...
http://www.che.com/processing_and_handling/thermal_and_energy_mgmt/heat_exchangers_condensers_and_coolers/Engineering-Practice-Get-More-From-Vertical-Thermosiphon-Reboilers_4321.html
October 15, 2008
Pumps Centrifugal pumps with cast or forged steel casings are typically appropriate for systems with large flowrates Positive displacement pumps frequently can handle smaller flowrates of less than 100 gal/min Sealless pumps (canned motor or magnetic drive) avoid the installation of mechanical seals A typical centrifugal pump can be expected to deliver operational head of about: where g is gravitational...
http://www.che.com/processing_and_handling/thermal_and_energy_mgmt/heat_exchangers_condensers_and_coolers/Facts-at-Your-Fingertips-Heat-Transfer-System-Design_4238.html
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...
http://www.che.com/processing_and_handling/thermal_and_energy_mgmt/heat_exchangers_condensers_and_coolers/Facts-at-Your-Fingertips-Humidity-Control_3949.html
May 15, 2008
Carbone Lorraine (CL; Paris, France; edlinks.che.com/7372-538) 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...
http://www.che.com/processing_and_handling/thermal_and_energy_mgmt/heat_exchangers_condensers_and_coolers/Chementator-These-Heat-Exchangers-Feature-Tantalum-as-an-Alternative-to-Graphite_3880.html
May 7, 2008
Only one month after the acquisition of GEA ViEX Inc. Canada (www.geagroup.com), the company has received a significant order for GEABloc custom-designed fully welded heat...
http://www.che.com/processing_and_handling/thermal_and_energy_mgmt/heat_exchangers_condensers_and_coolers/Sinclair-to-expand-refinery-in-Tulsa-with-GEABloc_3850.html
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