Page 3 of 5 FirstFirst 12345 LastLast
Results 27 to 39 of 53
  1. #27
    Join Date
    Jun 2013
    Location
    NORTHERN
    Posts
    991
    Excedrin has caffeined many before yuz.

    so does Gueranah (sp?) addn to all that chocolate I grab from the unsweetened bakers can, of wich I throw in pancakes and coffee !

    top off your pills with some good absorbing calcium, it pulls the synapses into what will help, too.
    ... however, much work still needs to be done.
    CLOSED LOOP newer ratings are listed, but in numerical EER's Closed- is posted below OPEN LOOP EER's:

    http://www.energystar.gov/productfin...r=0&lastpage=1

  2. #28
    Join Date
    Mar 2003
    Posts
    7,326
    Sarge, the valve is optional on the new smardt machines, and yes still using kiltech, but that may be subject to change. The newer version of the software is heads and tails over the older stuff( last year). We did some machines last year and found the program to have one really odd quirk that took several revisions ot get to go away. the new program in the last five machines has been VERY good.

    They don't feel they need that valve for all applications, and honestly, I agree. most applications are fine with a drop in capacity to ramp down and back up when bringing on another pump.

  3. #29
    Join Date
    Mar 2011
    Location
    North Carolina Piedmont Area
    Posts
    452
    Quote Originally Posted by KnewYork View Post
    Tin foil hats, anyone?
    I just put mine on. This one is special and has been made with an extended dome for greater attenuation and frequency reflection. It is possible that the radio frequency which he is on caused the radiation to pass over my head due to the fact that he is on a very high frequency.

    If he continues with this tone of conversation its likely that we will need some form of assistance for translation or maybe he will come back to earth.

    It would be much easier if he would just say what language he speaks and just maybe I could use my translator.
    But I am still learning and looking for a new mentor.
    _______________________
    In a strict sense troubleshooting is not part of the repair..........understand the symptoms and you will find a solution.

  4. #30
    Join Date
    Nov 2005
    Posts
    1,350
    Quote Originally Posted by sargent york View Post
    Allstar08. Is Smardt still using Kiltech controllers? We have one new 700 ton Smardt under contract and it has Kiltech Controller but no HGBP or LBV? As I said both brands are cutting edge, I have had a look at the new McQuay machines but not some of the other Turbocor compressor chillers out there. What kind of controllers are some of the other makers using?
    Yes, still Kiltech in the Smardts. You will have to let me know the details on the chiller. I thought that the HGBV was a must for staging in multiple compressors, however I have never worked on a 700 ton water cooled Smardt. The last McQuay I saw was using Carell with the Turbocors.
    I STARTED WITH NOTHING, AND I STILL HAVE MOST OF IT!

  5. #31
    Join Date
    Jun 2013
    Location
    NORTHERN
    Posts
    991
    Quote Originally Posted by ttenorio View Post
    We are looking at a 180ton ...water cooled .
    Yes you may arrive at "chilling" with flat out single-minded chillers; but on the first page to clarify:

    If you have any oportunity to use a pond of over 8 ft deep
    and CLOSED plastic piped coils; or you have any damp soil of sufficient temperature variation to cool your process, then

    Earth - Coupled hybrid chiller designs similar to what I installled in 1996 for PentAir/Structural Fiber...
    Did net out ~ 30 net cooling usable tons PER 1 HORSEPOWER
    at
    94 EW temps.
    Same has been done for servers inlieu of Liepert things, etc..

    IF the soils are moist enough and all is applicable: upto 90% savings over conventional
    and
    dry-cooler hybrids added reduce the ground loop at times and a very small mechanical-refrigeration chiller can be incorporated.

    Dr S Kavanaugh has articles all over the net on geothermal hybrid by the Source magazine articles, too.

    Hydro-Temp builders for trane and carrier different systems and erv's to 200 tons as well, has some to 75 tons that can be multi stacked but patented 1981 HW reclaim like others now sell (finally)
    and even double-priority on-demand instant HW recovery systems potable and non- for HIGHMASS radiant to other building zones...
    ... however, much work still needs to be done.
    CLOSED LOOP newer ratings are listed, but in numerical EER's Closed- is posted below OPEN LOOP EER's:

    http://www.energystar.gov/productfin...r=0&lastpage=1

  6. #32
    Join Date
    Mar 2003
    Posts
    7,326
    Quote Originally Posted by allstar08 View Post
    Yes, still Kiltech in the Smardts. You will have to let me know the details on the chiller. I thought that the HGBV was a must for staging in multiple compressors, however I have never worked on a 700 ton water cooled Smardt. The last McQuay I saw was using Carell with the Turbocors.
    I have sold several water cooled smardt machines without hgbv and multiple compressors. its optional on water cooled, but I suspect its mandatory on air cooled, but we have only one of those. i will be quoting a second soon and will ask.

  7. #33
    Join Date
    Sep 2011
    Location
    Northwest Louisiana
    Posts
    290
    Any of you ever meet Dave Johnson with Multistack? He done their start ups and troubleshooting conversions. Anyway he is now on our team. Email me if you need to contact Dave regarding turbocor related issues.
    A LITTLE BIT OF STUPID GOES A LONG WAY!

  8. #34
    Join Date
    Nov 2005
    Location
    California
    Posts
    24
    We have 2 Mcquay WMC chillers, I guess I should say Daikin now. From what a friend who has been with McQuay for 30 years says the name Mcquay will be completely removed from them. We also have 2 Smardt chillers, water cooled. I flew back to take there service class 2 years ago, which was pretty good. My older Smardt uses a kiltech Gen 1 controller and the newer chiller has the Gen 4 with the SX cpu. I have had several issues with the 2 year old chiller and am continuing work with Kiltech to try and solve software issues. Two factory kiltech technicians flew out yesterday to continue to try to work on my problems. If anybody's interested ask and I can get into that. Then I have one multi stack flooded evap on campus. I have had good luck so far with this one. It's about 2 years old and have contacted tech support twice with great success. I do like the PLC Flexsys controller on this chiller. I have actually had great support from all three manufactures.

  9. #35
    Join Date
    Apr 2008
    Location
    Lexington South Carolina
    Posts
    17
    I was charged 3 years ago with advising what kind of equipment to purchase at the University of South Carolina School of Medicine to change out our 1970's Trane centrifugals.

    I had only one month to crash research and say to my bosses: I like this. I don't like that. (My immediate boss was with the National Guard serving in Afghanistan)

    I saw competing brands in South Carolina and North Carolina, and Turbocors in Sumter, SC and Charlotte, NC. I couldn't tour the McQuay Turbocors at Paris Island because of security rules. The two different Multistacks I saw in Charlotte were OK. One installation had to add extra pre water filter strainers because they were receiving dirty water which was clogging up strainers quickly. That solved their problem.

    Nobody was cussing any of the brands. No one said "this stuff is crap". The Multistacks I saw used plate heat exchangers. I personally felt uncomfortable going with that because servicing them could have been very difficult in the future.

    I eventually chose to recommend conventional tube in barrel construction and felt better with that choice. (I'm the one that has to work on it) Without "knocking" Multistack" or McQuay, I felt that Smardt had had a long head start on the control software, written by the designer.

    I do not believe in fighting "The Creator".

    Why go with companies who were just learning what they could do with Turbocor ?

    We have had two sets of module or electronic failures on different Turbocor compressors in 30 months, repaired by Cayce Mechanical out of Sumter, SC. The factory also replaced all our modules 12 months ago with newer versions that are also more resistant to interference artifacts that come from nearby VFDs. In other words the new control modules are better filtered.

    I have twin units x3 and x3 for 6 compressors total and @ 1,000 tons capacity maxed out.

    The only thing I am noticing right now is when running unloaded in Dec - Jan on one compressor, we get periods where it seems refrigerant flow slows or stops traveling through the cooling block. The temp may go from a nominal 111F to 156F which triggers brown alarm and bothers me because electronics likes to remain eternally cool.

    When I have time I will contact the factory and talk to them about it.

  10. #36
    Join Date
    Jan 2011
    Posts
    1,223
    You might want to raise your condenser water temperature a little to help get a greater delta P between the evaporator and condenser. That should help with the refrigerant lift to cool the electronics.

  11. #37
    Join Date
    Apr 2008
    Location
    Lexington South Carolina
    Posts
    17

    Living and learning with Smardt Turbocor

    Quote Originally Posted by KnewYork View Post
    You might want to raise your condenser water temperature a little to help get a greater delta P between the evaporator and condenser. That should help with the refrigerant lift to cool the electronics.
    OK, I'll start by raising it 5 degrees

  12. #38
    Join Date
    Sep 2011
    Location
    Northwest Louisiana
    Posts
    290
    Despite what literature says we are finding 75 is minimum.

  13. #39
    Join Date
    Apr 2008
    Location
    Lexington South Carolina
    Posts
    17
    Quote Originally Posted by sargent york View Post
    Despite what literature says we are finding 75 is minimum.
    ======
    Noted, However, remember that all centrifugal manufacturers have brought out newer designs based on different operating physics, enabled partly by using particular new low pressure refrigerant(s).

    When you look at the performance/energy usage charts the amazing thing is that we are no longer "locked into" using a default incoming temperature of say 80 degrees by Johnson Controls, (or name your controls company) programming BECAUSE the total design is so different.

    Now, back to the charts I was talking about. ALL brands now can take advantage of cooler incoming water. This is why they are so exceptionally efficient Oct - April. You do not want to lose that. That is a LOT of power to save your employer or facility or whatever. One of my old 1970's Trane units idled with minimum winter load drawing 160 amps at 460 volts with massive sized conductors and contactors. it was a horribly inefficient machine.

    Using cool incoming water from my cooling tower, my Smardt centrifugal loads are anyware from 12 - 38 amps during winter months. If the day creeps up to 68F, so does amperage. I am taking a clue from the last two posters and I am going to experiment with slightly warmer water, monitoring the result daily. I will adjust for stability.

    The factory says that you can use 12 degrees over setpoint. So my rule of thumb will probably be go up from there.

    I would not arbitrarily use say, 75F degrees simply because that is way the old machine was set up. Older machine / new machine, newer design, = 100% different.

Page 3 of 5 FirstFirst 12345 LastLast

Tags for this Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
Comfortech Show Promo Image

Related Forums

Plumbing Talks | Contractor Magazine
Forums | Electrical Construction & Maintenance (EC&M) Magazine
Comfortech365 Virtual Event