MG Thermal Consulting

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About MG Thermal Consulting

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    http://www.mgthermalconsultingco.com
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    mikegronski@gmail.com

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    Atlanta, GA
  • Interests
    Refrigeration and process cooling industry.
    Gardening.
    Civil War History.

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  1. Hi Mike,

     

    re: 

    Great timing, I'm looking at a project that utilizes a 75kW chiller and would love to see some heat recovery option on this. Is this something you can look at?

    Cheers,

     

    George. 

  2. Jedd, We are a ways off before we can price out units, but right now you can count on the unit being about twice the HP as a conventional chiller- so if you were using 20 HP now, a 40 HP will be needed as a heat recovery chiller making 140 to 150F water. The new refrigerant will change that, making much hotter water. The system will need the hot and cold banks and other auxiliaries perhaps. Does this help?
  3. Really, the availability of the new refrigerants make the difference plus the compressor manufacturers have to test the refrigerants and so on until it comes available to the manufacturers and consumers. Also, it takes time for the manufacturers to determine a line of products and sales engineers and consultants time to put an overview and strategy to market. Fortunately for me, the manufacturer is already on the design end for a large convention center retrofit to eliminate steam heat nut needs 180F hot water to do that, which won't be done until next year. For distilleries, the chiller is actually a heat recovery chiller targeting the exiting hot water- so you get cold water that has to be used or saved in a cold bank or else hot water is not made. I hope that this becomes the future for distilleries as well giving owners a comprehensive plan for energy saving.
  4. In the next year or so, 190F water will be available on heat recovery chillers on the larger StillChill chillers I offer. There are new refrigerants being offered specifically for this design, which for those needing hot water, this would be a new efficiency that can be designed and budgeted. I went to a meeting that a design was being planned for a commercial building planning for hot water heat using a chiller, and this was part of the discussion (I was there to talk to them about variable speed drive on compressors used on chillers). You almost double the size of the chiller, but the conversion back to "free" heat makes it worth the $$$. Mike Gronski, MG Thermal
  5. Welcome Jason! I'll be glad to help your need for cooling system budgeting, consulting or purchase. I'll be up your way in a couple weeks to pick up our new German shepherd puppy. Mike Gronski
  6. That's exactly right, ground temp is about 55F and you can run a chiller at 45F as well.
  7. Depends on the temp of the leaving condenser water and whether it;s connected to an open reservoir- in which case its treated and not usable directly and has to go through a htx suitable for potable water, so you lose a few degrees on the water temp. I have set up a larger chiller with a discharge refrigerant tap so that you connect it to a heat exchanger that way. The best way is to capture heat from the mash cooling. You can even put an in-line exchanger to the boiler feed line to heat up the city water to the boiler. Lots of things, but so little time.
  8. I have "wintercoolers" that make a cold glycol loop in the winter along with a small heat exchanger, you can make the water cold all winter, Works great for Northern climates where you can get 30F weather for the winter, eliminates using up juice in the winter for the chiller.
  9. Even when the cooling water is cold enough for still operation, it may be lacking for mash cooling. With 200 Gal mash run, with a 2-3 HP chiller and reservoir, you can reject heat from the mash, and reuse the hot water (you make up water in your reservoir) if you use non-ferrous pumps and other wetted surfaces.
  10. Heat pumps (air cooled) generally do not work so well for processes due to peak loading (your on the right track with a poly reservoir- see my photo of an integrated system, 40 HP with 2500 Gal tank. Your set up depends on if the well runs dry. You should put a strainer before you pump the water into the condenser. For mash cooling, it may be a little tough- you may be ok, but it may extend cooling times in the summer. I have sold some booster chillers just for their mash cooling. Email me if you need more.
  11. I have a couple clients looking at chill filtration- is it one that has it's own refrigeration or to a separate glycol chiller?
  12. If you need any chilling for the mash, drop me a line. We can set up a dual temp setting chiller for down to 35F water for mash cooling and 50F for still runs.
  13. Hey, Kannuk. Getting ready to ship a chiller over to Buffalo *I used to live just South of Bflo. So you getting ready for the "leafs" stab at the cup? Good luck and if you need a chiller, I do business with a chiller Co. in Toronto as well- probably easier for you. To Hudson B- I also handle a line of dry (chiller by air- radiator type) chillers. I supplied one to a Duluth distiller, that way he doesn't use city water in the winter.
  14. Generally. you need a separate room for boiler- alcohol fumes can cause an explosion.
  15. sent email, apparently you can't receive messages here. that must be annoying.