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  1. #1
    Join Date
    Feb 2008
    Location
    Dubai
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    HVAC MANAGER OR BMS-WHICH IS GOOD

    In the building automation system, the HVAC system generally is the part of building management system (BMS), according to a survey earlier conducted in UAE and as per my experience, the BMS almost out of order, as well as the HVAC system such as the control of chilled water pump, FAHU operation….etc will be in out of use.
    I think the major drawback of the BMS is the required commitment at all levels throughout its operational life to maintain maximum effectiveness. Operation and maintenance cost might be higher compared to simpler management. Also there are lots of group of communication interface, there will have always some error in any electronic board. These jeopardize the smooth operation of the system. The Major energy consumer of the building, above 60%, is HVAC system. At present, I am taking some initiative for installing HVAC dedicated manager for our buildings by segregating from the BMS, and I think it will be a simpler and can be include more operational logic ….
    What you think..
    THANK YOU

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  3. #2
    Join Date
    Aug 2003
    Location
    Fort Worth, TX
    Posts
    11,841
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    Most BMS/EMS systems are vastly underutilized pertaining to energy management. Mostly used for monitoring, on/off, and troubleshooting. That last item is part of underutilization...how many building managers/operators take advantage of the built-in trending tools of their EMS platform to diagnose equipment problems or locate energy waste?

    So I see no need to reinvent the wheel; just learn to better use what's already on your desktop.
    Psychrometrics: the very foundation of HVAC. A comfort troubleshooter's best friend.

  4. #3
    Join Date
    Mar 2009
    Location
    Several Miles from Sane
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    moideen,
    I can't speak for your part of the globe but in the USA the "BMS" (or BAS, EMS, EMCS, etc.) is quite often the foundation laid by the HVAC DDC control system itself. Energy monitoring, Lighting Control and other systems get added to or integrated into the initial BMS/HVAC system.

    I my neck of the woods the percentage of overall electrical cost, and in many cases overall energy cost, of the HVAC System is considerably less than the 60% you mentioned.

    As Shophound said, most of the time the BAS/BMS is greatly underutilized. Additional Training of Operating and Management personnel could result in greatly improved HVAC system operation as well as efficencies.
    If sense were so common everyone would have it !
    Stupid should Hurt !
    If people took care of their cars like they do their HVAC Systems you'd see a lot more people walking
    !

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