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Parking BTUs with Buffer Tanks (Part 2)
In this two-part interview, Moe Hirsch goes deep and wide on buffer tanks and strategies for "parking" BTUs in hydronic systems.
Systems with a high domestic hot water load can also benefit from a buffer tank. You can pipe the domestic hot water tank as its own zone and step down the rest of the structure. However, there will be some standby losses for a tradeoff greater capacity. You also cannot use the buffer tank as an air eliminator or separator; they work only for BTU parking.
Contrary to popular belief, buffer tanks do NOT prevent flue gas condensation. If the buffer tank reaches…
The skinny
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