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Old 09-02-13, 12:43 PM   #5
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Originally Posted by michael View Post
Attached is a sketch of a comprehensive plan for space and water heating for both my current house and another smaller house...
It's really great that you have put this drawing up as a focal point of this discussion. I really hope other EcoRenovators follow your clarifying example. as far as I'm concerned, you have just raised the bar for all of us in a very good way.

Originally Posted by michael View Post
I am preparing to install the source field and heat pump over the next year or two. All of the shown components will also be put in the new construction although the PV solar will be somewhat smaller since it is to be a smaller house at 1200 SF.
Your drawing is an excellent idea, but some other information that will prove to be just as helpful will be:
  • Your HDD & CDD information. Knowing what the Heating and Cooling Degree Days are at your site or as close as possible. HDD & CDD can be gotten from THIS website. Since EcoRenovator draws an audience of international viewers, many of whom have superior understanding of these problems and solutions, you should run the calculations separately for Imperial units an also Metric units. It does not work to run the calcs for Imperial and the convert to metric... you need to run them separately.
  • Any microclimate information that will cause serious deviation from HDD & CDD. Are you in a specific location where the wind blows continuously? This could have a big impact on how you should best proceed.
  • Your heating load and cooling load information. You should not proceed very far in your design until you actually know what your design needs are. How can you dig a loop field if you don't know how much heat you will require? You can find a free calculator HERE that will do a very good job of giving you that information. You should also go over your home energy bills and sum them up as a total (BTU/hr and kW-h) per month, to use as a double check.
  • The results of your blower door test. You really should do this since the greatest source of heat loss is due to infiltration.
  • The current level of insulation in your home. Unless you have already installed very robust insulation, money spent on insulation will bring you more benefit than money spent on alternative energy.

Originally Posted by michael View Post
I have spent a good deal of time trying to understand how to integrate these systems to achieve as close to an energy zero house as possible.
If you're serious about zero energy, then you will have to balance out all your minuses (this means ALL your energy losses) with all your pluses (this means ALL your energy gains). So you need to know what your energy losses actually are, and also all of your energy gains, in a completely accounted for and quantified way.

Originally Posted by michael View Post
The PV array can be found on another thread titled "DIM 5500 w PV Array,"
michael, if you actually want people to help you, you should give them a link to the beginning of that thread. You should edit that link into your first post in this thread.

Originally Posted by michael View Post
...and a short video of it can be found on YouTube at "TrackingQT1."
...same thing here. If you really want people to give you useful advice, link to the video you are referring to. I'm pretty sure that less than 20% of the people who have read your initial post even bothered to seek out and watch your video.

Originally Posted by michael View Post
Conversations about our radiant heating system can be found on other threads.
"Other threads"? What other threads? Is it late at night and you are falling asleep? Wake up michael! Leave some links to those posts.

If you are serious about getting advice, you need to be serious about supplying relevant information upon which to base that advice.

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I'm not an HVAC technician. In fact, I'm barely even a hacker...
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