Articles

281-300 of 311 < first | | | last >
  • The Synergy of Simulation, Experimentation and Technical Support Activities in a Research Consortium

    For the business of designing process heat exchangers, computational fluid dynamics (CFD) tools are still not practical for everyday use. However, in a research consortium such as HTRI, integrating advanced analysis tools like CFD with industrial-sized experimentation and then applying them to real-world technical problems provides a significant synergistic benefit to the consortium members.

    Kevin J. Farrell
    11/06/2005
  • New data support development of spiral plate heat exchanger software

    HTRI has conducted extensive testing on a spiral-spiral single-phase flow unit for a wide range of Reynolds (6.5 to 74,000) and Prandtl (3.8 to 2260) numbers. These data were used to evaluate open literature and HTRI methods.

    Fernando J. Aguirre/Christopher A. Bennett
    09/02/2005
  • Chemical makers play the power game

    Chemical manufacturers are using a range of strategies to cope with rising power costs. They are relying more on pooling and cogeneration.

    Mike Spear, editor at large
    08/25/2005
  • Drive up energy efficiency

    The constant-speed approach to AC motors made a lot of sense when energy was cheap and drives technology was in its infancy. With their latest advances, adjustable speed drives can provide one of the best energy efficiency options for a plant.

    Mike Spear, editor at large
    06/16/2005
  • Barriers to Industrial Energy Cost Control: The Competitor Within

    The Alliance to Save Energy conducts ongoing research of “the competitor within,” a.k.a. organizational barriers to energy efficiency. The barriers to energy management are rooted in the very complexity of modern organizations. Communications and incentives are the key to overcoming these barriers.

    Christopher Russell, Director, Industry Sector
    06/08/2005
  • Save a bundle solving pressure-drop problems

    Pressure drop in compressor-suction and interstage coolers often creates problems. In some cases, just a few pounds of extra pressure drop make a revamp unworkable.

    Andrew Sloley
    11/04/2004
  • Better damper control delivers big savings

    Installing an electric drive on a steam boiler damper results in lower fuel consumption. The reason? The electric drive enables boiler operation with just the right amount of excess air at lower firing rates.

    Joshua I. Anderson,&nbsp;Adolfo B. Aparicio and Scott T. Rutkoski
    11/01/2004
  • Get control of reactor temperatures

    A reader has a plug-flow reactor whose temperature is starting to cycle. The company tried to tuning both controllers but saw no improvement. Read about potential solutions to this reader's problem.

    Diane Dierking, Senior Editor
    08/05/2004
  • Energy savings are in the air

    Anywhere compressed air can be eliminated represents an opportunity to reduce system operating expenses. Often, this reduction means fewer compressors must operate to meet the plant's air requirements.

    Christopher Schmidt, Mark D'Antonio and Alan MacDougall
    08/05/2004
  • Rev up energy savings

    Electric motors in continuous or near-continuous service have high energy costs, even at the relatively low electric rates common in much of the chemical industry. Don't squander savings opportunities when considering motor replacement

    05/13/2004
  • Heat transfer fluids

    Information about heat transfer fluid (HTF) systems and the specifications for applicable fluids can be retrieved directly from the web sites of many HTF manufacturers

    Alan E. Hodel
    03/08/2004
  • Better Damper Control Nixes NOx

    Installing accurate inline oxygen analyzers and precision draft controls can optimize emissions reductions and fuel savings

    03/03/2004
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