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  • The Myth of Pressure Independent VAV Terminals
    and complaints stem from improperly sized VAV terminals furnished with pressure independent (P.I.) controls. This practice is a " black eye" on our industry, an industry that almost universally assumes that the pressure independent feature will atone for oversized terminals, poor duct design, and sloppy
  • Pressure Independent Control Valves
    In HVAC plants, water distribution can be accomplished at constant. or variable fl ow. Each type of distribution system has advantages and. disadvantages. Today variable fl ow systems using electronic 2-way. control valves became generally accepted as the industry standard due. to their benefi ts
  • Improving Campus Chilled Water Systems with Intelligent Control Valves: A Field Study
    This article describes a field study conducted on two university campuses in Massachusetts and Colorado during the cooling season of 2011. The purpose of this experimental study was to alleviate ?? degradation problems on both campuses through the use of intelligent pressure-independent control
  • Medical Device Link . Spotlight on Pumps and Valves
    disposables are also produced. The company is certified to ISO 9001 and follows US FDA CGMP procedures. An integrated manifold is designed to replace systems composed of multiple independent valves, tubing, screw sets, and ferrules. The device also eliminates assembly requirements as well
  • Hydraulics aids trash-to-energy conversion
    through Model 2 FRE 6 proportional flow-control valves, which let electrical signals control fluid flow independent of pressure and temperature variations. Hydraulics is known for generating large forces from compact packages. But it's also extremely rugged, often performing without fail under operating
  • Take Out The Shake
    block diagram. Using block-diagram algebra gives the relationship between the desired position The above transfer function shows that a thirdorder equation governs the system's dynamics. We can learn a lot from this equation. For example, if Kp is zero -- which means servovalve flow is independent
  • Saab 9-5 Aero sedan
    independent rear suspension carry heavier antiroll bars, stiffer springs, and harder dampers than its 9-5 siblings. The firmer chassis also sits about a half inch lower than other 9-5 models. Standard 17-in. wheels help harness the power and tame the braking. Unfortunately, our test vehicle was equipped
  • U.S. Battery and Fuel Cell Patents | January 2008 | A B T |
    for producing high-purity hydrogen, Hiroyuki Fujimura, Chi Matsumura, Takahiro Oshita, and Kanichi Ito, Ebara Corp. (JP). U.S. 7,291,410 (20071106), Orientation independent liquid fuel reservoir, Mark R. Kinkelaar, Kenneth P. Overk, Salvatore C. Panarello, Joseph W. Lovette, Roeland J. Tuinman

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