Can a solar air heater be coupled to an HRV to preheat incoming fresh air?
- Save
- Like
- Comment(1)
- Share
Can a solar thermal air system be coupled to an HRV for heating incoming fresh air?
We set in a new 2 pc modular bungalow on our lot in 2009, it is 28' x 42'. It and has an existing Fantech HRV system to provide fresh air and minimize heat loss of the exhausting air to prevent moisture issues causing mold. The home also had tubing installed in basement concrete floor for future infloor heating (no system on the tubes yet). Existing heat is electric baseboard and a wood stove centrally located in basement. Electric hot water system (NOT a rented utility-owned tank).
我想知道将HVR系统与太阳能加热空气系统耦合的可能性和可行性,该系统将为HVR的新风一侧收集热量,并在“传热”箱后的系统内部空气流动收集热量。
I also would like to install a solar water thermal system in to supply heat for the basement in-floor system and also pre-heat the domestic hot water tank to reduce required electricity consumption. I have a lead on where I can acquire a steel rack enclosed - crated heavy plastic storage tank "pallet" design that could be very helpful as a "heat storage battery". I think I would set it inside a well insulated outdoor containment box. It would have heat transfer coils inside.
我们住在西蒙兹新布伦瑞克,靠近哈特兰(相对于太阳能收集潜力)。
Am I crazy? Brian
We haven't seen any great results when trying to marrysolar air heatersto anHRV. To achieve a similar result ofpre-heating airbefore it enters theHRVI would instead propose a ‘ground loop’ system which is a solution sometimes applied to help achievePassive House certification. It is a matter of laying a tube around the perimeter of the home (below frost-depth, or below the slab or below the skirt insulation), so that incoming air takes advantage of ambient ground temperature.
There are some concerns with it to ensure safe air quality, here is a previously asked abouthow to install a ground loop with an HRVthat discusses those issues. And, assuming it is done correctly -
I think you would notice better results with this technique as it not only warms incoming air in the winter, but also helps cool incoming air in the summer. The benefits of a ground loop would be 24/7, 356 days a year, while the benefits of a solar panel would be limited to sunny winter days. So you may actually see more returns from a ground loop; and it would be cheaper and easier install, and there would be no maintenance costs.
As for your solar water heater ‘heat storage battery’, you already have that – the concrete floor. Assuming you have at least 3 or 4 inches of concrete in your floor, it will most likely absorb as much solar-generated heat as you could possibly throw at it during a sunny winter day, so I would personally skip the step of including a separate thermal battery and feed the heat directly into the floor. Here are a few pages that may offer you some ideas and inspiration.