The information and calculation spreadsheets listed below are provided by Mr. Konstantinos Paspalas, scientific expert at the Department of Mechanical Engineering of the Aristotle University of Thessaloniki, Greece. These spreadsheets were developed with regard to the provisions of the EN 13384-1 standard and can be used for dimensioning and designing chimneyw fired by LPG, Natural Gas, Diesel oil, and Wood fuel. For more information please contact directly Konstantinos Paspalas at [email protected] or Dr. Apostolos K. Michopoulos at [email protected].