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  1. Replies
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    “I've actually seen air to air systems with...

    “I've actually seen air to air systems with higher EER's (close to 20) at part load than some of the water to water GSHP's!”

    The question is at what temperatures…

    “And making matters "worse"...
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    767

    I could only take the 1st 2-min. Sounds like...

    I could only take the 1st 2-min. Sounds like leftist crap to me!
    '1% of the population own 40% of the money...people starving... blood on American money. Sounds like the only 'solution' is...
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    1,572

    Sounds like something is definitely wrong with...

    Sounds like something is definitely wrong with the design and/or installation! Are the ground loops connected in parallel, 1-loop per ton, reverse return with properly designed header or is it a...
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    You probably require about 150 ~ 200 vertical...

    You probably require about 150 ~ 200 vertical feet per ton of borehole. Since you already have zoning, use the existing GSHP for an appropriately sized zone and install additional GSHPs to properly...
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    Standing Column

    Standing Column is hardly a viable option for a residential installation. You did not to mention DX.

    SR
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    The preferred solution is either Liquid-to-Water...

    The preferred solution is either Liquid-to-Water or DX-to-Water Geothermal Heat Pump(s) with Hydronic fan coils. This solution will satisfy both heating & cooling - without the need to install forced...
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    639

    Neither will anything else…it’s all relative… ...

    Neither will anything else…it’s all relative…

    SR
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    My 2¢

    I’m just saying that’s what a kW of heating would cost. Crunch the numbers any way that suits you.

    Regarding "¢", I can tell you how to do it if you’re on a Mac. If you’re on a PC, I’m not sure…...
  9. Replies
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    639

    So, if you install a geothermal unit with a COP...

    So, if you install a geothermal unit with a COP of ~4, your heating will cost you ~1.5¢/Kw of heat. Nat. gaz won’t cool your house.

    SR
  10. Replies
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    Very well done - I liked it! Bravo! SR

    Very well done - I liked it!

    Bravo!

    SR
  11. Replies
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    Having had experience installing Nordic DX...

    Having had experience installing Nordic DX systems, both DX-To-Air and DX-To-Water, I can tell you that they are excellent and VERY reliable machines. As an owner of a Nordic DX HP in my own home I...
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    http://www.nordicghp.com/mg/ Then click on...

    http://www.nordicghp.com/mg/

    Then click on 'Manuals' or 'Products', then 'DX'.

    Best DX machines I ever seen...

    SR
  13. Thread: Oldest Geo

    by fsq4cw
    Replies
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    4,014

    1989 Geo

    VERY FUNNY!!! LOL
  14. Replies
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    There should not be any negative ramifications of...

    There should not be any negative ramifications of letting your HP sit idle all summer. However, having BOTH a desuperheater AND an ‘extra’ full capacity hot water loop running threw your DHW buffer...
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    2,934

    I’m going to go out on a limb here and say your...

    I’m going to go out on a limb here and say your HP is either a DX-55 or a DXS-55. You’re probably producing about 10-Igph/hr of hot water.

    I don’t think it’s worth running a GSHP for the sole...
  16. Why should that make a big difference with a...

    Why should that make a big difference with a closed loop ground loop heat exchanger?

    SR
  17. The first things you have to know definitively...

    The first things you have to know definitively are, flow rate in gallons per minute, entering water temperature (EWT) and leaving water temperature (LWT). These are the first steps to determine...
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    My advice would be to hire a professional...

    My advice would be to hire a professional engineering firm with a geothermal specialty.


    As mentioned previously, an in-situ test borehole must be drilled (with results good for that depth...
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    I would suggest taking the Canadian GeoExchange...

    I would suggest taking the Canadian GeoExchange Coalition - Installers' Course. Or purchase a copy of CAN/CSA C-448-2 'Design and Installation of Earth Energy Systems'.
    Should you decide to take the...
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    I don’t think this forum is the appropriate place...

    I don’t think this forum is the appropriate place to discuss consulting fees. Consulting could involve all the items you mentioned and more. One thing it would not involve and that would be the...
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    Training is the issue. Fewer than 25% of the...

    Training is the issue. Fewer than 25% of the people working in the geothermal industry have had any formal training in this area. This is why your costs have ballooned by 30% - so where’s your...
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    Hi John, HC = Heating Capacity (Total Output)...

    Hi John,

    HC = Heating Capacity (Total Output) in BTUs, CFM (Cubic Feet Per Minute, fan capacity), LAT (Leaving Air Temperature at the supply plenum), EAT (Entering Air Temperature at the return...
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    Thank-you for not taking terrible offence to my...

    Thank-you for not taking terrible offence to my comments.

    I think you may have to wait till later in the season to access efficiency. You will have some idea as to how well you’re doing by...
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    This is just my own personal opinion, however,...

    This is just my own personal opinion, however, your ground loops could/should be designed differently if efficiency is what you desire – and geothermal is all about efficiency!

    First of all,...
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    Just a couple more questions. Is your flow rate...

    Just a couple more questions. Is your flow rate right for the size of your system, concentration and type of antifreeze you're using? Has your system been properly flushed and purged since this...
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