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Archives :: Processing & Handling :: Thermal & Energy Management

Displaying 41 - 60 of 417 stories.
April 1, 2012
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
March 1, 2012
With these two energy-use monitors, companies can gain insight into how, when and where energy is being expended throughout a production process. The PowerMonitor W 250 (photo) features a self-generating wireless...
http://www.che.com/processing_and_handling/thermal_and_energy_mgmt/Track-energy-usage-with-these-monitors_9044.html
March 1, 2012
Last month, this company launched a new version of its Stateview system for detecting leaks in district energy systems. Stateview System II (photo) boasts a ten-fold increase in wireless...
http://www.che.com/processing_and_handling/thermal_and_energy_mgmt/Detect-leaks-from-heating-pipes-with-this-system_9063.html
March 1, 2012
The Simetal EAF FAST DRI is a new electric arc furnace that is specially designed for the use of direct reduced iron (DRI). It allows a continuous melting process, as electric energy...
http://www.che.com/processing_and_handling/thermal_and_energy_mgmt/kilns_ovens_and_furnaces/New-electric-arc-furnace-for-steelmaking_9069.html
February 1, 2012
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 20, 2012
Green Biologics Ltd. (GBL; Abingdon, Oxfordshire, U.K.; www.greenbiologics.com), an industrial biotechnology company has merged with Butylfuel Inc., a U.S.-based renewable chemicals and biofuels company. The new company will operate under the Green Biologics name and will continue to be...
http://www.che.com/processing_and_handling/thermal_and_energy_mgmt/fuels/Biobutanol-manufacturers-merge_8916.html
January 11, 2012
In the long run (a few hundred years, perhaps) humans will exhaust the Earth’s current supply of fossil fuels. It is more accurate to say that before we exhaust the supply, humans will stop burning fossil fuels to produce electricity and power our vehicles because fossil fuels will have become too valuable. From a chemical engineering perspective, would it not be more appropriate to use fossil fuels...
http://www.che.com/processing_and_handling/thermal_and_energy_mgmt/fuels/Global-Energy-Future-The-300-year-Outlook_8874.html
January 1, 2012
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
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
Steam traps are designed to allow condensate, but not steam, to escape from a steam line. When they malfunction, however, numerous costly consequences can result including energy losses, insufficient heating to processes, maintenance issues and more. At its Global Users Exchange in late October...
http://www.che.com/processing_and_handling/thermal_and_energy_mgmt/boilers_and_steam_handling/Detecting-steam-trap-leaks-gets-easier_8728.html
December 1, 2011
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
December 1, 2011
Articles about thermal fluid systems often start with a variation of the statement that “thermal fluid systems typically require little ongoing maintenance for the first few years of operation” and then go on to extol the various advantages of indirect thermal-fluid process heating over competitive heating methods, such as direct heat, steam and so on. The corollary to that statement, however...
http://www.che.com/processing_and_handling/thermal_and_energy_mgmt/heat_transfer_media/Troubleshooting-Heat-Transfer-Fluid-Systems_8729.html
December 1, 2011
Thermal fluid systems that both heat and cool are often utilized in batch processes. They are also often found in continuous processes where heating is required at one point in the process and cooling (often for the purpose of heat recovery) is required in a different part of the process. Because these systems utilize the same fluid for both the heating and cooling process, they are collectively referred...
http://www.che.com/processing_and_handling/thermal_and_energy_mgmt/heat_transfer_media/Thermal-Fluid-Systems-Design-Considerations_8781.html
December 1, 2011
Kalocer high-alumina ceramic mosaics can line a variety of plant components quickly and easily. Kalocer mosaics come in a variety of sizes and shapes, including square and...
http://www.che.com/processing_and_handling/thermal_and_energy_mgmt/kilns_ovens_and_furnaces/These-ceramic-mosaics-can-line-complicated-geometries_8733.html
December 1, 2011
Modernizing the world’s power grids represents a key infrastructure goal for economic growth. Large-scale, energy-storage technologies offer the opportunity to optimize the efficiency of the next-generation power grid and extend its capabilities. Renewed attention on energy storage systems for the grid has given rise to a host of emerging technologies aimed at more effectively transmitting...
http://www.che.com/processing_and_handling/thermal_and_energy_mgmt/power_generation_and_transmission/Transporting-Energy-Through-Time_8746.html
November 1, 2011
In today’s climate of increased energy prices and tightening environmental emissions requirements, petrochemicals producers around the world are continuing to focus on optimizing energy consumption at their facilities. Over the past few years, while energy prices have been increasing, petroleum refiners and chemicals producers have made progress toward improved, overall energy performance by...
http://www.che.com/processing_and_handling/thermal_and_energy_mgmt/Energy-Benchmarking_8618.html
November 1, 2011
Pinch analysis is a systematic method to maximize energy recovery from process streams entering and exiting process equipment. Using this method, the minimum thermodynamic requirements for hot and cold utilities can be calculated for a process. This is useful to determine areas where savings can be realized and where savings are not available. It is a method that can be used during the design of a process...
http://www.che.com/processing_and_handling/thermal_and_energy_mgmt/Energy-Optimization-Using-Pinch-Analysis_8624.html
November 1, 2011
The HGA-S-CX1300 system is an innovative high-temperature steam-generation device that instantly produces high-quality superheated steam at 1 atm pressure. Maximum steam temperatures of...
http://www.che.com/processing_and_handling/thermal_and_energy_mgmt/boilers_and_steam_handling/A-superheated-stream-generator-without-pressure-vessels_8659.html
October 4, 2011
The Dow Chemical Company (Midland, Mich.; www.dow.com) and the U.S. Department of Energy's (DOE) Argonne National Laboratory (Argonne, Ill.; www.anl.gov) have signed a memorandum of understanding (MOU) for a multi-year research collaboration to jointly develop the next generation of materials for advanced battery technologies. Dow and Argonne will be collaborating on several new materials...
http://www.che.com/processing_and_handling/thermal_and_energy_mgmt/power_generation_and_transmission/Dow-and-Argonne-National-Laboratory-collaborate-on-new-battery-materials_8564.html
October 1, 2011
A well-operated steam generator can save money. In a steam-driven turbine system, water is heated in the steam generator to produce high-temperature, high-pressure steam. Steam is then expanded in a turbine to produce electricity from a generator. Turbine steam is condensed back into water in the condenser. A pump then returns the water to the steam generator. Engine thermodynamics Theoretically, the most...
http://www.che.com/processing_and_handling/thermal_and_energy_mgmt/boilers_and_steam_handling/Steam-generator-operation-and-thermodynamics_8512.html
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