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.roneverhart.com/HP-Pavilion-15-eg2373cl-15-6-FHD-Touch-Laptop-Intel-Core-i7-1255U-3-50-GHz-GeForce-MX550-16GB-DDR4-512GB-SSD-Windows--p8309/