Heat exchangers shouldn't have nooks and crannys

Heating · Furnaces and Boilers · printed page 175 (PDF page 176)

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Book index entries

for Wood Furnaces Heat Exchangers Wood Furnace

Text in the illustration

hot air
cold air
air flow
heat exchangers shouldn't have sharp elbows or nooks and crannys that can collect debris and be hard to clean
heat exchanger
exhaust flow
wood furnace
cross section

Generated explanation

The illustration shows a cross section of a wood furnace with burning logs, a heat exchanger, a belt-driven blower, and supply and return air ducts. Arrows show cold air entering from above, heated air leaving through the opposite duct, and exhaust traveling to the flue connector on the right. The heat exchanger has a zigzag passage with sharp turns and pockets where debris is shown accumulating. A red prohibition symbol emphasizes that these debris-trapping, difficult-to-clean heat exchanger configurations are improper.