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

Displaying 1 - 20 of 68 stories.
May 1, 2013
Specifying Shell-and-Tube Heat Exchangers
Shell-and-tube heat exchangers are one of the most important and commonly used process equipment items in the chemical process industries (CPI). If you are working on a project during either the basic or the detailed engineering phase, there is a good chance that you will need to specify one or more shell-and-tube exchangers — and perhaps many of them. While the actual design will likely be done...
http://www.che.com/processing_and_handling/thermal_and_energy_mgmt/heat_exchangers_condensers_and_coolers/Specifying-Shell-and-Tube-Heat-Exchangers_10477.html
March 1, 2013
Freeze food faster with this new impingement freezer
The HVF-Freezer (high-velocity freezer) is said to be an improved freezer concept based on existing impingement-freezer technology. The new HVF uses high-velocity air jets to quickly reduce the outer layer...
http://www.che.com/processing_and_handling/thermal_and_energy_mgmt/heat_exchangers_condensers_and_coolers/Freeze-food-faster-with-this-new-impingement-freezer_10275.html
October 1, 2012
Separate components from gases with this desublimator
The Pluto mini-desublimator is used to separate substances in applications such as for tank breathing, thereby reducing emissions to the environment, for recovering raw materials or for protection of downstream vacuum generators. Gas comes in contact...
http://www.che.com/processing_and_handling/thermal_and_energy_mgmt/heat_exchangers_condensers_and_coolers/Separate-components-from-gases-with-this-desublimator_9813.html
October 1, 2012
Use this heater for instant hot water
The RediHeat instantaneous water heater can produce hot water instrantly within ±4F of the set temperature under widely varying demands. Designed with a unique feed-forward...
http://www.che.com/processing_and_handling/thermal_and_energy_mgmt/heat_exchangers_condensers_and_coolers/Use-this-heater-for-instant-hot-water_9821.html
September 1, 2012
Cooling Water Outlet Temperature: Evaluating The Best Maximum Value
Corrections: From the October 2012 Letters page: This original article, which appeared in the print edition of Chemical Engineering (September 2012), had two errors: Equation (19) should read D = log (TH)-0.4, and Table 2 was missing decimal points in all numbers on both the x- and y-axes. The corrections are shown here. Recirculating cooling-water systems are essential parts of many facilities throughout...
http://www.che.com/processing_and_handling/thermal_and_energy_mgmt/heat_exchangers_condensers_and_coolers/Cooling-Water-Outlet-Temperature-Evaluating-The-Best-Maximum-Value_9683.html
May 1, 2012
These chillers are portable
The Iceman SM Series is a line of high-efficiency chillers available in capacities from 5 to 15 hp. Iceman chillers utilize Copeland Scroll Digital compressors, which are...
http://www.che.com/processing_and_handling/thermal_and_energy_mgmt/heat_exchangers_condensers_and_coolers/These-chillers-are-portable_9283.html
May 1, 2012
This fluidized bath has a built-in dust extraction system
The FFB-8 is a precision fluidized bath with exceptional stability and uniformity for temperature sensor calibration and heat-treatment processes. It offers a built-in dust extraction and collection system, as well as a wide operating range (122–1,292°F) and PID (proportional integral...
http://www.che.com/processing_and_handling/thermal_and_energy_mgmt/heat_exchangers_condensers_and_coolers/This-fluidized-bath-has-a-built-in-dust-extraction-system_9293.html
April 1, 2012
Thermal Integration Of Reboilers
The approaches currently used by process integration specialists to assess the opportunities for the integration of reboilers are frequently erroneous and lead to proposals that have to be rejected at the detailed engineering stages or worse, to commissioned reboilers that do not perform properly. This article examines the integration of both vertical and horizontal thermosiphon reboilers, and covers the...
http://www.che.com/processing_and_handling/thermal_and_energy_mgmt/heat_exchangers_condensers_and_coolers/Thermal-Integration-Of-Reboilers_9180.html
February 1, 2012
Effective Thermal Design Of Cooling Towers
Various misconceptions arise when it comes to the thermal design of cooling towers. Sometimes related parameters, such as range, approach, effectiveness, liquid-to-gas ratio ( L/G), wet-bulb temperature, cooling water temperature, relative humidity, number of transfer units (NTU) and other terms create a confusion for the designer in effectively sizing, selecting and evaluating a particular cooling tower...
http://www.che.com/processing_and_handling/thermal_and_energy_mgmt/heat_exchangers_condensers_and_coolers/Effective-Thermal-Design-Of-Cooling-Towers_8949.html
January 1, 2012
Designing Shell & Tube Heat Exchangers: Avoid Vibration From The Start
Mechanical integrity is an essential consideration in heat exchanger design. The most common threat to this integrity is tube bundle vibration. So, the computer programs used for heat exchanger design incorporate procedures that assess this threat. However, such analysis is generally undertaken after exchanger geometry has been identified. The result can be that geometry that is optimal in terms of thermal...
http://www.che.com/processing_and_handling/thermal_and_energy_mgmt/heat_exchangers_condensers_and_coolers/Designing-Shell-and-Tube-Heat-Exchangers-Avoid-Vibration-From-The-Start_8834.html
January 1, 2012
Designing Shell and Tube Heat Exchangers: Consider Two-Phase Flow
In the chemical process industries (CPI) it is relatively common to use a homogeneous two-phase flow model to predict the pressure drop through the shell-side of horizontal heat exchangers that handle two-phase mixtures. Recent experimental studies reported by HTFS [1, 2], however, have shown that this approach leads to overprediction of pressure drop and to overprediction of thermal performance. As a...
http://www.che.com/processing_and_handling/thermal_and_energy_mgmt/heat_exchangers_condensers_and_coolers/Designing-Shell-and-Tube-Heat-Exchangers-Consider-Two-Phase-Flow_8839.html
December 1, 2011
Heat-exchanger 'fusion'
Last month at the Brau Beviale 2011 Exhibition (November 9–11; Nuremberg, Germany), Alfa Laval AB (Lund, Sweden; www.alfalaval.com) launched a new plate heat exchanger, which combines the energy efficiency, accessibility and modularity of plate technology with the viscous and particulate-handling capabilities of tubular technology. The so-called FusionLine features a...
http://www.che.com/processing_and_handling/thermal_and_energy_mgmt/heat_exchangers_condensers_and_coolers/Heat-exchanger-fusion_8742.html
October 1, 2011
A window into kettle reboiler secrets
Thermosiphon reboilers are the new standard in petroleum refineries and chemical plants. Nevertheless, approximately 50% of the world’s reboilers are kettles. In the realm of heat transfer, kettle reboilers have not been understood well. Last month, at ChemInnovations, however, Pete Parker, FRI’s president and my supervisor, cracked the knowledge barrier with insight from nothing other than...
http://www.che.com/processing_and_handling/thermal_and_energy_mgmt/heat_exchangers_condensers_and_coolers/A-window-into-kettle-reboiler-secrets_8501.html
October 1, 2011
A new approach to maintaining tubular heat exchangers
At the 2nd Annual ChemInnovations Conference and Expo (Houston; September 13–15), Hemi-O Technologies LLC (Corpus Christi, Tex.; dixonengineering@gmail.com) introduced its patent-pending technology that enables external access to individual tubes in a heat exchanger while the exchanger is in service and operating at full capacity. The so-called Hemi-O (heat exchanger maintenance and inspection...
http://www.che.com/processing_and_handling/thermal_and_energy_mgmt/heat_exchangers_condensers_and_coolers/A-new-approach-to-maintaining-tubular-heat-exchangers_8513.html
August 1, 2011
Eliminate downtime with a skid-mounted pair of PHEs
The GEASkid version of the NT Series is a plate heat exchanger (PHE) module with permanent standby function, comprising two completely independent PHEs designed to eliminate machine downtimes caused by maintenance. The GEASkid was developed...
http://www.che.com/processing_and_handling/thermal_and_energy_mgmt/heat_exchangers_condensers_and_coolers/Eliminate-downtime-with-a-skid-mounted-pair-of-PHEs_8332.html
July 1, 2011
Heat Exchangers for Hot Acids: Material Selection
To make the modern materials we use every day, such as plastics, metals, electronics, pharmaceuticals, fuels and so on, strong acids are used to convert the earth’s raw materials into modern materials. In fact, so many tons of acid are used (200 million metric tones of sulfuric acid annually worldwide) that the gross domestic product (GDP) of most industrial nations are directly correlated to...
http://www.che.com/processing_and_handling/thermal_and_energy_mgmt/heat_exchangers_condensers_and_coolers/Heat-Exchangers-for-Hot-Acids-Material-Selection_8160.html
June 1, 2011
Compact, High-efficiency Heat Exchangers: Understanding Fouling
The topic of fouling in heat exchangers has been of increasing interest in recent years, since it is so closely linked to the cost of building and running a chemical plant. It has been reported that fouling costs are about 0.25% of the gross national product (GNP) of highly industrialized countries, which, based on current estimates of GNP for the U.S. of $15 trillion, makes the staggering cost of fouling...
http://www.che.com/processing_and_handling/thermal_and_energy_mgmt/heat_exchangers_condensers_and_coolers/Compact-High-efficiency-Heat-Exchangers-Understanding-Fouling_8087.html
May 1, 2011
Reduce energy consumption with adiabatic cooling
GEA Air Treatment CAIRplus air-handling units for airflow from 3,000 to 23,000 m3/h are now available with adiabatic cooling. These models cool extracted air up to the saturation point. The cold produced by...
http://www.che.com/processing_and_handling/thermal_and_energy_mgmt/heat_exchangers_condensers_and_coolers/Reduce-energy-consumption-with-adiabatic-cooling_7973.html
April 27, 2011
Plate heat exchangers with thinner frames
GEA PHE Systems The new EcoFlex CDH heat-exchanger frame range features frame plates that have been considerably reduced in thickness. The cross section reduction in the clamping bolts has been compensated for by a greater...
http://www.che.com/processing_and_handling/thermal_and_energy_mgmt/heat_exchangers_condensers_and_coolers/Plate-heat-exchangers-with-thinner-frames_7955.html
April 1, 2011
Flexible Heat Exchanger Networks
The ever important aim of energy efficiency in the chemical process industries (CPI) is brought closer to its target by the practice of energy recovery in heat exchanger networks (HENs). When heat exchangers are designed to work together to exchange heat between hot and cold streams, the required utilities are effectively reduced. The HEN designer usually applies the assumptions of fixed operating...
http://www.che.com/processing_and_handling/thermal_and_energy_mgmt/heat_exchangers_condensers_and_coolers/Flexible-Heat-Exchanger-Networks_7747.html
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