The paper describes the results of studies of the design model for a two-column radiator of central heating in tripleobjetive optimization conditions. The optimization problem is reduced to finding the minimum of a scales function in a 8-dimensional space bounded by 7. 8 or 9 inequality constraints. It is investigated the permissible region. https://www.diegojavierfares.com/flash-find-Bushranger-Awning-2-5m-W-x-2-0m-L-2-Year-No-Fuss-Warranty-AW2000-best-save/