Q&A

Selecting the number of radiator sections is a rather meticulous task and requires some knowledge of heat engineering. First, it is necessary to determine the heat losses of the room, taking into account the outdoor air temperature according to building codes, the indoor temperature, heat transfer coefficients of the external structures, types of structures (walls, windows, insulation, etc.) … Once the heat loss values are obtained, you can proceed to select the number of radiator sections. Detailed information on selecting sections can be found in the “Recommendations for the use of radiators manufactured by LLC “PRES”.

Flat 1, Flat 2, and Ribbed radiators of the corresponding center-to-center distances practically do not differ in heat output. Generally, the main factor in choosing a radiator type is the design. However, there are differences. Each radiator transfers heat by convection and radiation. Flat 1 and Flat 2 radiators have a more pronounced convective component of heat transfer. The warm air flow from Flat 1 radiators is directed vertically upward, creating a sort of thermal curtain under the window (these radiators are inefficient when installed in niches or directly under the windowsill). The Flat 2 type has a “deflector” design, directing most of the warm air into the room. Ribbed radiators have a more pronounced radiant component of heat transfer, which reduces internal air circulation, thus raising less dust. Additionally, Ribbed radiators are the only ones on the Ukrainian market without hidden surfaces where dust can accumulate. For these reasons, Ribbed radiators are considered “hygienic” heating devices and are recommended for installation in medical facilities.