Regulating Masonry Heaters Masonry Heater Association of North America Regulating Masonry Heaters MHA : “MHA is an association of builders, manufacturers and retailers of masonry heaters and masonry wood fired bake ovens whose purpose is to promote the industry, sponsor research and development, shape regulations, standards and codes, inform and educate the public, and further the expertise and professionalism of its membership.” About myself
Masonry Heaters: A Different Animal
Fireboxes Designed for Large Loads
Top Down Burn Big Wood is Better 1.5 – 2 hours Burn Time 1 or 2x per Day
Integrated Heat Exchanger and Thermal Storage
Slow Heat Release
A Unique Combination Short Burn Time High Burn Rate Slow Heat Release
To Eliminate the Causes of High Emissions Cold Starts Reloads Low loads
A Masonry Heater Equivalent: a Hydronic Heater with Storage + Radiant floor
How MHs Match Heating Requirements (considering the disconnect between burn rate and heat output) Fuel Load Firing Cycle
Why Regulate Masonry Heaters ? Good for air sheds : Real life clean burning Help improve adoption Building permits Bans Grants & Change-out programs Better appliances, better user manuals push for adoption of BSER push to better educate operators
What is MHA doing to get regulated ? Fundamental Research for the Calculator chemical composition of flue gasses heat exchange / flow direction Repeatability testing Test Method see following photo report from the Jan 2017 testing session at Mark Champion’s lab