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commercial heat pump water heater

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tim smith
tim smith Member Posts: 2,774
anyone come up with a good solution for this. 140 degree water, maybe 100000 btu, with storage?

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  • hot_rod
    hot_rod Member Posts: 22,505
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    2 or 3 small residential units?
    Bob "hot rod" Rohr
    trainer for Caleffi NA
    Living the hydronic dream
  • Larry Weingarten
    Larry Weingarten Member Posts: 3,391
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    Hi, Have a look here: http://colmacwaterheat.com/ Also, have a look here: https://aceee.org/conferences/hwf/past as there have been talks on heat pump heaters for years.

    Yours, Larry
  • tim smith
    tim smith Member Posts: 2,774
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    I have looked at that but not sure about it yet. Also no real solid ones that I can think of Hot rod
  • Icarus
    Icarus Member Posts: 143
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    Sanden? Will put out ~160f water.

    https://www.sandenwaterheater.com/

    Icarus
  • tim smith
    tim smith Member Posts: 2,774
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    Icarus, I have went over the Sandens pretty well, only problem is there btu ratings. Really would like 2 - 4 or 5 ton units but alas not available, yet.
  • hot_rod
    hot_rod Member Posts: 22,505
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    seems like there could be a huge market for large sizes in areas going "fossil free"
    Bob "hot rod" Rohr
    trainer for Caleffi NA
    Living the hydronic dream
  • Larry Weingarten
    Larry Weingarten Member Posts: 3,391
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    Hi, HR is right! I was at an expo yesterday in Sacramento CA, showing off new ideas in heat pump water heaters. It was basically standing room only. At present, Colmac, Nyle and A O Smith were the three companies talking about commercially sized heaters. Also, companies are working on 120VAC heat pumps as replacements for gas fired heaters. We'll see where it goes and how fast.

    Yours, Larry
  • Icarus
    Icarus Member Posts: 143
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    tim smith said:

    Icarus, I have went over the Sandens pretty well, only problem is there btu ratings. Really would like 2 - 4 or 5 ton units but alas not available, yet.

    Sanden’s are easily plumbed in series to increase production. I am currently doing a project to use two for CH and DHW using a Taco Xblock.

    Icarus
  • jumper
    jumper Member Posts: 2,333
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    In good old days a refrigeration guy could build his own. When double wall was coded in that became more difficult. Maybe double wall is not necessary for CO2 refrigerant? Are CO2 compressors available?
  • tim smith
    tim smith Member Posts: 2,774
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    co2 compressors are not readily available in lager that 1 ton or so sizes, that is one reason why Sanden stayed at size they are as they are using automotive compressors which some factories are tooled already for.