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  1. #14
    Join Date
    Jul 2011
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    16

    Daikin EWYD-BZ scroll inverter heat pump chiller

    I found scroll inverter heat pump chiller Daikin EWYD-BZ, but can not find SEER info. Can anybody help?

  2. #15
    Join Date
    Aug 2009
    Location
    Prattville, Alabama
    Posts
    2,084
    Why is a "research scientist" doing his research by polling strangers on an open internet forum? No offense intended, Citon. I just can't shake this feeling of being....played.

  3. #16
    Join Date
    Jul 2011
    Posts
    16
    I got involved in energy saving of local buildings, and found it very difficult to get comprehensive information about best industrial chillers through dillers. Can you recommend better source of knowledge?

  4. #17
    Join Date
    Jul 2009
    Posts
    14
    Quote Originally Posted by jayguy View Post
    the 'optimal' chiller is......no chiller.

    heat pump chillers are getting popular now. you really need to consult a local factory office for ideas about your specific application.

    I would agree on contacting your local rep/office.

    We just installed two 170 ton scroll heat pump chillers (York - YCWL) that are fed from a geothermal field. Each chiller has five scroll compressors each and are working great.

    Beware - heat pump machines are totally different animals.

  5. #18
    Join Date
    Aug 2009
    Location
    Prattville, Alabama
    Posts
    2,084
    Citon, This site is a good source of knowledge. It is also a source of opinions. Good luck. I would start with jayguy's (and mkn8632) suggestion. Your local rep can probably set you up with a visit to another customer with an application similar to yours. As to "best industrial chiller", you're liable to only find who does the best job of marketing their particular set of numbers (that is, from the OEM's). BTW, what is "dillers"?

  6. #19
    Join Date
    Dec 2008
    Location
    Dixiana, AL
    Posts
    2,611
    Quote Originally Posted by Nuclrchiller View Post
    ..BTW, what is "dillers"?
    Those are cold water pickle coolers. Not very popular in the U.S., but catching on quickly in developing European nations.

    (Sorry, I couldn't help myself.......)

  7. #20
    hey how much heat do u need in the winter and do u have any electrical load #s for the building?

    bc tecogen makes a few products that would work but u would need more then one piece of equipment


    Heavy Duty

  8. #21
    Join Date
    Jan 2008
    Location
    windy city
    Posts
    4,437
    Quote Originally Posted by Citon View Post
    I found scroll inverter heat pump chiller Daikin EWYD-BZ, but can not find SEER info. Can anybody help?
    disposable junk
    \m/
    original member of the racoon brotherhood

  9. #22
    Join Date
    Aug 2006
    Location
    Mixing oil and fire with a big spoon.
    Posts
    4,398
    put a drive in it...put a drive in it...put a drive in it...put a drive in it...put a drive in it...put a drive in it...

    that's all i hear any more. drives are not the answer to everything. drives have their place, however, drives cost more up front, cost more to replace than a standard starter and they DO consume more energy above 95% (typically) than a standard starter.

    again, drives have their place and i like most of them, however, more and more drives are being used today in place of proper engineering.

    a properly engineered AND THOUGHT OUT chiller/boiler plant without drives is much easier to control and is much more energy efficient than a piece of garbage where drives are thown on to everything to make up for poor engineering.
    When the rich wage war, it's the poor who die - Linken Park

  10. #23
    Join Date
    Jul 2011
    Posts
    16
    Quote Originally Posted by heavyduty2010 View Post
    hey how much heat do u need in the winter and do u have any electrical load #s for the building?
    bc tecogen makes a few products that would work but u would need more then one piece of equipment
    Heavy Duty
    I need about 400 ton of cooling in summer and about the same amount of heating in winter.

  11. #24
    Join Date
    Jul 2011
    Posts
    16

    variable speed versus constant one

    Quote Originally Posted by jayguy View Post
    ... a properly engineered AND THOUGHT OUT chiller/boiler plant without drives is much easier to control and is much more energy efficient than a piece of garbage where drives are thown on to everything to make up for poor engineering.
    Let me give you an example: variable speed Turbocor water cooled chiller has IPLV of 8 - 9 kW/kW. Carrier variable speed screw chiller 23XRV EVERGREEN® and centrifugal 19XR EVERGREEN® come close to this.

    Do you know any "properly designed" constant speed machine of similar efficiency?

  12. #25
    Join Date
    Aug 2009
    Location
    Prattville, Alabama
    Posts
    2,084
    The quote from jayguy is correct. The numbers from Citon (8-9 kW/kW) are confusing. Is that a typo? Regardless, this is comparing apples to oranges,or, plant efficiency to one component's (chiller) efficiency.

  13. #26
    Join Date
    Jul 2011
    Posts
    16
    Quote Originally Posted by Nuclrchiller View Post
    The quote from jayguy is correct. The numbers from Citon (8-9 kW/kW) are confusing. Is that a typo? Regardless, this is comparing apples to oranges,or, plant efficiency to one component's (chiller) efficiency.
    I wanted to compare chillers with chillers. IPLV of 8-9 (in kW of cold per kW of power) is rather realistic. Just look at the technical data of those chillers.

    If you like to talk about plants, look at this review article, which shows 30 - 50% economy comparing to constant speed plant

    "All-Variable Speed Centrifugal Chiller Plants: Can We Make Our Plants More Efficient?", by MT Hartman, The Automator, Automated Buildings March, 2002

    http://www.automatedbuildings.com/ne...rtmn/hrtmn.htm
    Last edited by Citon; 07-08-2011 at 09:49 AM. Reason: type typo

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