The 300 L (80 gallon) Stiebel SBB - 300 solar storage tank is the central component of the solar hot water system, storing potable hot water for the hydronic floor and for domestic household use.It collects solar heat by running fluid (antifreeze) from the solar collector through a heat exchanging coil at the bottom of the tank (see diagram below).
A back-up heat source (in our case, and electric boiler) provides heat through another heat exchanger coil in to top of the tank when the water gets below a set temperature. Electricity runs at 8 cents a KWh in Quebec, and it makes little sense to use anything else.
Sources:
- Radiant floor heating company: Solar Water Heating - Storage
- Stiebel-Eltron USA: SB and SBB Solar Storage Tanks
- Stiebel Eltron USA: Instalation guide
Dimensions
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