Dear community members,
I have read the annotation for the article "The Technologies of Biomass and Coal Co-Combustion in Pulverized-Coal Furnaces" located Wood products (http://pelleta.com.ua) and the idea of installing both wood pellet heating and coal heating systems in a house.

Do yo know any examples when such an experience was successful?

Check the actual cost of fuel. Wood pellets are not cheap for the BTU content.
Then you have to buy a special stove/burner.
Then you can have insurance problems for your house since it is considered a wood stove.
The units have to be install to there listing with UL or CSA.

Too much of a pain in the A$$ for me.