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jbaron
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Posts:43
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| 10/16/2009 1:08 AM |
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| Looking for some advice.
I am building a new house, part of which is old house. In the new house, much of the radiant heating will be in concrete. In the old house, th heating will be done with low temperature radiators.
So, I have a two temperature house, but not so far apart temperature wise. In fact, the cooler water "starts out warmer" at warmer temperatures because of earth-ground contact, but the slope of the cooler water reset curve is quite a bit shallower than that of the warmer water.
Assuming that, my question is this: I have two bedrooms that can be heated off of either the low temperature water (that's headed for the concrete) or the higher temperature water (that's headed for the radiators.) Remember, the higher temperature water isn't that much higher - on design day, it's a difference between 110 and 130 degrees.
So, I can either install one of the board products (Thermalboard or Warmboard) and use the lower temperature water, or staple up using Quicktrak and use the warmer temperature water. if it makes any difference, the reset curve "profile" is a better match on the warmer water.
My inclination is to use the warmer water because it's already there, and because that will more closely balance out the needs between the two water temperature requirements.
Is there any reason that I should make an effort to use the cooler temperature water and simply orphan the radiators to be by themselves on the warmer loop?
If it's any help, I've sized the radiators to work with the cooler water. This is important, as I'll be heating my house with a 5-panel solar hot water system.
Thanks in advance for any advice,
Jeff
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