One thermal efficiency of profiled panel radiators- (A) and double-row (B)

For the most common, of a double-row radiator, the nominal heat output is reduced by more than 35%, as shown in the picture. The basic elements are profiled steel sheets, welded yes, to create horizontal and vertical channels, through which the heating water flows.

Diagrams of the construction of flat radiators. Marks: 1-4 – smooth surfaces,a – front wall, b – rear wall of the radiator

The table compares the nominal heat outputs of this type of flat heaters.

Nominal heat output of some steel plate radiators

Steel flat radiators have different dimensions. Their height varies from 200 into 900 Mm, and length from 400 to about 4000 Mm. Their small depth (5-20 Cm) allows free interior design. The heat output of these radiators reaches 18000 In. They are produced by welding embossed and cut to the appropriate dimensions of steel sheets.

A variation of flat radiators are solutions with ribbing. They are produced in version C (side-powered) and version V. There are single-person heaters, two- and three-plate without ribbing (types 10, 20 i 30), single-plate with ribs (types 11,21 i 31). They are characterized by low water capacity and light weight. The advantages of flat heaters are: low weight, water capacity and building depth, easy to clean, aesthetics, good cooperation with closed-type installations and low price in relation to thermal power. These heaters, similar to section heaters, are gradually being replaced by convector heaters.