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  • Design Simulation for Warehouse Temperature Control
    A pharmaceutical manufacturer needs to keep space temperatures in a warehouse between 68 F and 78 F to maximize shelf life of their products. The building?s HVAC control system was designed to issue an alert to plant operating personnel whenever temperatures in the space fall outside a +/- 3.5 F
  • Applying Inverters to Centrifugal Compressors in HVAC Chillers (.pdf)
    When applying an inverter to centrifugal compressors on HVAC chillers, there are a number of factors to consider. For some compressors, lubricating oil circulation may be driven by the rotation of the compressor shaft itself, via a gear-driven pump arrangement. If you slow the motor speed
  • Design Simulation for Warehouse Temperature Control
    A pharmaceutical manufacturer needs to keep space temperatures in a warehouse between 68 F and 78 F to maximize shelf life of their products. The building?s HVAC control system was designed to issue an alert to plant operating personnel whenever temperatures in the space fall outside a +/- 3.5 F
  • UVC: Florida Hospital Puts HVAC Maintenance Under a New Light (.pdf)
    Florida Hospital has found germicidal UVC in the AHUs reduces or eliminates coil cleaning programs, yielding on-going energy savings, a reduction in HVAC system maintenance, and the elimination of cleaning chemicals. The facility also reports IAQ and infection control benefits.
  • Optimize HVAC and Process System Efficiency by Matching Your Plant and Processes To The Right Flow Measurement Technology
    Plant engineers have many flow measurement technology options when selecting flow sensors or flow meters to optimize heating-ventilation-air-conditioning (HVAC) and process control systems. It is therefore helpful to understand in some detail, the multiple types of flow meters and flow sensor
  • UL 1995 and Plenum Ratings
    As more and more HVAC control products are installed above ceilings, in ducts, in mechanical lofts, and in other plenum areas, fire safety has become a greater. concern.
  • HVAC Dual-AC Motor Control with Active PFC Implementation Using Piccolo TM MCUs (.pdf)
    The 32-bit C2000 TM Piccolo TM microcontroller from TI provides a true single chip solution for multiple motor drives, including the front-end PFC. In this paper, implementation of controlling two motors using field oriented control (FOC), and an interleaved PFC using a single controller
  • Recording Closed-Loop Control System Cycles for HVAC Savings
    As an example of the savings data loggers can identify, CAS DataLoggers recently supplied an Accsense Electrocorder data logger to monitor a customer's thermostatically oil-fired central heating system for their office building over a period of 6 months. After collecting the data, users graphed the
  • 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
  • Mission: HVAC 2016 - Challenge Three: Improve Indoor Air Quality
    They say we spend 90 percent of our day indoors - whether in our homes, at school, at work. So, it's critical we work to control the amount of indoor pollution we come into contact with. Things like pollen, dust and dander, dirt, bacteria, viruses, mold and more can negatively impact the indoor air
  • Control panels get new ratings
    common goal the safe installation and use of equipment. So when the National Electrical Code changes, it gets their attention. One change in the NEC now under intense scrutiny is the new Article 409 covering electrical panels used for industrial controls, HVAC equipment, and industrial machinery
  • Understanding Power Needs for Industrial Control Devices
    Industrial control is a designation for the devices that interface with machinery such as welders, mixers, generators, lathes, and packaging machines. Unlike most of the information technology (IT) arena, which focuses on machine-to-human interfaces, industrial control focuses on machine-to-machine

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