andre´, welcome in the forum…this is our bread and pizza oven…needs much less wood for heating as a traditional brick oven…
it is a closed system in stainless sheet, with a space from4 or 5 cm to the stone wall…there circulates the heat
it creates no wood gas, but excellent charcoal for motor use, every bread baking about 20 liters…
in my topic about indoor cooking there is the description of a - at least - very relieable woodgas cooker…