It was shown that under the comparable conditions the average heat emission coefficient from a surface of rotating single disc facility is higher by 10-15 %, compare with conditions of transverse blow-off of a single cylinder. Established that single disc outside diameter variation by 35 % from 220 mm (OD 220) to 296 mm (OD 296) will lead to increase of the average heat emission from their surface into environment only by 5-7 %, and increase of the shaft rotation frequency from 200 rot/min to 1200 rot/min results in the increase of the coefficient by 2,8-3 times.