http://www.che.com Chemical Engineering en-us 2010 Wed, 17 Mar 2010 17:51:05 EDT Steam tracer lines are designed to maintain the fluid in a primary pipe at a designated uniform temperature. In most cases, these tracer lines are used outdoors, which makes ambient weather... http://www.che.com/processing_and_handling/liquid_gas_and_air_handling/steam_traps/5489.html Mon, 1 Mar 2010 0:00:00 EST This article describes an algorithm that end users can use to develop a program on a personal computer to assess the technical and economic feasibility of installing a variable frequency drive (VFD) on centrifugal pumps. This simple algorithm serves a variety of useful functions.... http://www.che.com/processing_and_handling/liquid_gas_and_air_handling/pumps/5445.html Mon, 1 Feb 2010 0:00:00 EST Find design files quickly with this search software, a centrifugal pump available in many size combinations, more exhibited products...... http://www.che.com/processing_and_handling/liquid_gas_and_air_handling/pumps/5451.html Mon, 1 Feb 2010 0:00:00 EST Results of 12-mo immersion tests in biodiesel and bioethanol of a range of elastomer polymers typically used in fuel-handling equipment show that the seals are prone to significant swelling... http://www.che.com/processing_and_handling/liquid_gas_and_air_handling/seals_gaskets_and_packing_materials/5439.html Mon, 1 Feb 2010 0:00:00 EST For valves operating in hazardous environments, certification testing is critical to ensure the reliability and safety of the equipment. But this testing process has historically required facilities to shut down and sacrifice valuable production hours to check each valve. Built-in self-test (BIST) capabilities in smart, electronic valve actuators were developed in response to these testing challenges. This article examines how BIST simplifies valve testing and reduces the cost, while increasing the level of confidence in valve and actuator safety.... http://www.che.com/processing_and_handling/liquid_gas_and_air_handling/valves/5459.html Mon, 1 Feb 2010 0:00:00 EST Uniformly blend batches with this inline mixer; Quicklyu change mount configurations with this modular system; and more... http://www.che.com/processing_and_handling/liquid_gas_and_air_handling/mixing/5443.html Mon, 1 Feb 2010 0:00:00 EST Pipe sizing calculations include certain values that are time dependent, such as costs. While some costs rise, others decrease over time. It is the designers task to ensure that the total cost is minimized. For fluid flow calculations,heuristic criteria are often used, which is the main reason why these values must be updated from time to time. In this article, recommended velocities are updated for several materials of construction, and other velocities for new materials are calculated, using the Generaux Equation [1],... http://www.che.com/processing_and_handling/liquid_gas_and_air_handling/piping_and_tubing/5402.html Fri, 1 Jan 2010 0:00:00 EST Kaeser Compressors Vacuum systems in the Com-pak Plus blower series (photo) are positive displacement, tri-lobe blower packages that provide consistent, reliable vacuum. They feature... http://www.che.com/processing_and_handling/liquid_gas_and_air_handling/fans_and_blowers/5346.html Fri, 4 Dec 2009 0:00:00 EST Parker Hannifin Tex-Flex fluorinated ethylene propylene (FEP) corrugated tubing (photo) can turn sharp corners without kinking. The manufacturer asserts that the tubing can handle bend diameters... http://www.che.com/processing_and_handling/liquid_gas_and_air_handling/piping_and_tubing/5332.html Fri, 4 Dec 2009 0:00:00 EST The skirts on the new CE Series pipe caps are designed to stretch over the pipe edges while retaining their shape and tight fit... http://www.che.com/processing_and_handling/liquid_gas_and_air_handling/piping_and_tubing/5347.html Fri, 4 Dec 2009 0:00:00 EST