1. Welcome Hearth.com Guests and Visitors - Please enjoy our forums!
    Hearth.com GOLD Sponsors who help bring the site content to you:
    Hearthstone Soapstone and Cast-Iron stoves( Wood, Gas or Pellet Stoves and Inserts)

Heat Storage, 1 large or many small tanks

Post in 'The Boiler Room - Wood Boilers and Furnaces' started by Blofeld69, Oct 4, 2013.

  1. Blofeld69

    Blofeld69 New Member

    Joined:
    Oct 1, 2013
    Messages:
    36
    Loc:
    Budapest, Hungary
    Hello
    Hard to get a large tank where I am, I am wondering the advantages/disadvantages of having a large tank over having more smaller tanks connected together but same volume of water?
    Many thanks

    Helpful Sponsor Ads!





  2. ewdudley

    ewdudley Minister of Fire

    Joined:
    Nov 17, 2009
    Messages:
    1,942
    Loc:
    Cayuga County NY
    I went with three 250 gallon propane tanks.

    They're short and skinny, so all three standing on end with insulation take up 4.5 ft wide x 9 ft long x 9 ft high, which makes a decent amount of storage, with a small, long and narrow footprint. With the room width available it worked out nicely, but of course most every situation will have its own optimum layout.

    Disadvantages include more fittings, more complicated piping, and more complicated rigging and millwright work to get them situated. Also it takes a fair amount more insulation (per gallon) to do a good job of insulating simply because the storage is less compact with multiple tanks.
    Last edited: Oct 4, 2013
    hobbyheater likes this.
  3. stee6043

    stee6043 Minister of Fire

    Joined:
    Aug 22, 2008
    Messages:
    2,443
    Loc:
    West Michigan
    As EW mentioned above the plumbing expense can really add up on when adding more and more tanks. Shut offs and the like are not cheap!
    ewdudley likes this.
  4. arngnick

    arngnick Member

    Joined:
    Feb 15, 2013
    Messages:
    245
    Loc:
    Mansfield, PA
    One tank if you can find one that you can move into the space you have for it. One tank will give better stratification but many small tanks will work well if set-up correctly.
  5. Blofeld69

    Blofeld69 New Member

    Joined:
    Oct 1, 2013
    Messages:
    36
    Loc:
    Budapest, Hungary
    I found a tank, about 5000 litre which is 1320 us gallons, what do you guys think? about 1000 us dollars. I thought this would be good as when not using it in the summer I could use it as a hot tub, tile it and deck the sides :)

    Attached Files:

  6. kopeck

    kopeck Minister of Fire

    Joined:
    Mar 24, 2011
    Messages:
    536
    Loc:
    Maine

    Is it Stainless steel? If it isn't you are going to have to line it some how. That being said it shouldn't be a huge deal to put a PVC liner in it but then you have to insulate it as well so you will have some money tied up...

    K
  7. Blofeld69

    Blofeld69 New Member

    Joined:
    Oct 1, 2013
    Messages:
    36
    Loc:
    Budapest, Hungary
    its been painted, its not enough?
  8. kopeck

    kopeck Minister of Fire

    Joined:
    Mar 24, 2011
    Messages:
    536
    Loc:
    Maine
    I don't know of any paint that can take being submerged in 200 degree water for any amount of time. I guess you could drain and touch up every year or two...

    You will also have to use some sort of heat exchanger.

    K
  9. Blofeld69

    Blofeld69 New Member

    Joined:
    Oct 1, 2013
    Messages:
    36
    Loc:
    Budapest, Hungary
    or I found this one a lot cheaper. It was originally used for heating oil, the seller says its been cleaned and is rust free...would this work?

    Attached Files:

  10. hobbyheater

    hobbyheater Minister of Fire

    Joined:
    Nov 14, 2011
    Messages:
    1,015
  11. Blofeld69

    Blofeld69 New Member

    Joined:
    Oct 1, 2013
    Messages:
    36
    Loc:
    Budapest, Hungary
    I am in Europe and on a budget. This tank is 180 bucks
  12. hobbyheater

    hobbyheater Minister of Fire

    Joined:
    Nov 14, 2011
    Messages:
    1,015

    I have the plans for building your own soft tank , the plans are about 12 pages long so it will take 2 posts .
    If you want I will post them !
  13. Blofeld69

    Blofeld69 New Member

    Joined:
    Oct 1, 2013
    Messages:
    36
    Loc:
    Budapest, Hungary
    yes please!
  14. maple1

    maple1 Minister of Fire

    Joined:
    Sep 15, 2011
    Messages:
    5,172
    Loc:
    Nova Scotia
    Will this be for a pressurized or non-pressurized application?

    Big difference in the tank you'll need - and I don't think you've mentioned yet.

    (Either way stay away from oil tanks...)
  15. hobbyheater

    hobbyheater Minister of Fire

    Joined:
    Nov 14, 2011
    Messages:
    1,015
    pg 41.jpg
    pg 42.jpg

    pg 43.jpg
    pg 44.jpg

    pg 45.jpg pg 45.jpg

    Attached Files:

  16. Blofeld69

    Blofeld69 New Member

    Joined:
    Oct 1, 2013
    Messages:
    36
    Loc:
    Budapest, Hungary
    thanks. it will be non-pressurized
  17. hobbyheater

    hobbyheater Minister of Fire

    Joined:
    Nov 14, 2011
    Messages:
    1,015
    It has been recommended that pressure treated lumber be used,and stainless steel fasteners .
    Also today there are much better liners than EPDM , and I'm sure the company that I linked above would put you onto them.

    pg 46.jpg

    pg 47.jpg

    pg 48.jpg

    pg 49.jpg

    pg 50.jpg

    pg 51.jpg
  18. kopeck

    kopeck Minister of Fire

    Joined:
    Mar 24, 2011
    Messages:
    536
    Loc:
    Maine
    Build your own tank/frame and then get the liner from Tom, that would keep the shipping down.

    What are you going to be using for exchangers?

    K
  19. Blofeld69

    Blofeld69 New Member

    Joined:
    Oct 1, 2013
    Messages:
    36
    Loc:
    Budapest, Hungary
    What do you guys think of a rubber tank? This is german made and 4600 litres so 1215 us gallons

    Attached Files:

  20. peakbagger

    peakbagger Minister of Fire

    Joined:
    Jul 11, 2008
    Messages:
    1,997
    Loc:
    Northern NH
    Most "rubber" tanks are synthetic and few are rated for high temperature. From personal experience even tanks rated for high temperature occasionally fail. There is a lot to be said for a welded PVC liner rated for the appropriate temperature. Unfortunately it may be hard to get in Europe as PVC is generally not recycleable.

Share This Page