http://www.che.com Chemical Engineering en-us 2013 Sat, 25 May 2013 12:02:04 EDT Changing out used heat-transfer fluid is critical to the efficiency of a heat-transfer fluid system. A well-operated heat-transfer-fluid system can enable efficient production, fewer shut-downs, less maintenance time and lower costs. In order to maintain a sound heat-transfer system, it is critical that the fluid is well cared for and, when the fluid reaches the end of its life, that it is efficiently changed out for new fluid. As fluid is used and ages, it can degrade to a point where it is no longer providing sufficient heat transfer for the process. When this occurs, the fluid must be... http://www.che.com/processing_and_handling/thermal_and_energy_mgmt/heat_transfer_media/10299.html Fri, 1 Mar 2013 0:00:00 EST 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, is that by the time there is a problem, the operating personnel that were trained on the system have moved on, been excessed or promoted. As a result, when things do go wrong, the guessing begins. And, unless there is an obvious cause like a geyser from the expansion-tank vent or a pump that sounds like it’s moving ball bearings, someone will likely blame the thermal fluid for the problem. There are several problems that seem to occur with some frequency. This article reviews a number of real examples and describes how the symptoms can be misinterpreted. The suspected fluid properties and the testing procedures necessary to determine which of the fluid properties (if any) is responsible for the problem are examined (Figure 1). Finally, recommended corrective actions are proposed.... http://www.che.com/processing_and_handling/thermal_and_energy_mgmt/heat_transfer_media/8729.html Thu, 1 Dec 2011 0:00:00 EST Thermal fluid systems that both heat and cool are collectively referred to as “single fluid systems.” This article discusses considerations specific to the design and operation of single fluid systems, although some of these considerations are more widely applicable.... http://www.che.com/processing_and_handling/thermal_and_energy_mgmt/heat_transfer_media/8781.html Thu, 1 Dec 2011 0:00:00 EST A well designed and operated heat-transfer-fluid system is a key feature of a safe, reliable and cost-effective heating design. However, problems can arise if the heat-transfer fluid becomes heavily degraded or the system is allowed to accumulate solids and other process contaminants.... http://www.che.com/processing_and_handling/thermal_and_energy_mgmt/heat_transfer_media/8303.html Mon, 1 Aug 2011 0:00:00 EDT With the addition of the ASME Code 16-mil. and 20-mil. Btu/h thermal-fluid heaters, these Btu fuel-fired horizontal heaters are now available from 2.4-mil. to 20-mil... http://www.che.com/processing_and_handling/thermal_and_energy_mgmt/heat_transfer_media/6998.html Mon, 28 Mar 2011 0:00:00 EDT Etanorm SYT is the latest generation of single-stage volute casing pumps, which were developed for applications in modern heat-transfer systems and hot-water... http://www.che.com/processing_and_handling/thermal_and_energy_mgmt/heat_transfer_media/7493.html Mon, 28 Mar 2011 0:00:00 EDT Management of process plants requires the understanding and application of the fundamental tenets of safe design, construction, and operation of each facility. In that context, many years of practical experience with systems that use very high-temperature organic heat-transfer media has led to much knowledge... http://www.che.com/processing_and_handling/thermal_and_energy_mgmt/heat_transfer_media/6197.html Wed, 1 Dec 2010 0:00:00 EST OVERVIEW Indirect heating of processes by organic thermal-liquid fluids offers highly reliable operation, and the heat transfer systems are generally treated as low-maintenance utilities. Occasionally, the heat transfer fluid can become contaminated, resulting in the formation of sludge particles, or other... http://www.che.com/processing_and_handling/thermal_and_energy_mgmt/heat_transfer_media/5888.html Sun, 1 Aug 2010 0:00:00 EDT Solutia Inc. (St. Louis, Mo.; www.therminol.com) announced today that it has supplied Therminol D12 and Therminol 66 synthetic heat transfer fluids to a new state of the art, 15,000 metric ton per year (m.t./y) solar-grade high-purity polysilicon manufacturing plant in Xinyu City, China. The facility is... http://www.che.com/processing_and_handling/thermal_and_energy_mgmt/heat_transfer_media/5329.html Wed, 2 Dec 2009 0:00:00 EST Faced with increased workloads and time and budget constraints that often restrict external training support, many chemical process operators are forced to get the most out of their heat transfer system with less help. This article offers recommendations for how to carry out proactive maintenance on heat-transfer fluids, to maximize their useful life and minimize problems associated with fluid degradation, such as excessive downtime for unplanned maintenance when the heat transfer system has become unsafe or is no longer able to carry heat in a reliable manner.... http://www.che.com/processing_and_handling/thermal_and_energy_mgmt/heat_transfer_media/5322.html Tue, 1 Dec 2009 0:00:00 EST