OHA Series - Radiant Tubes and Radiant Strips Heating Systems Brochure

14The heat distribution takes place thanks to the aluminatessteel emitting tubes which because of their uniqueness ofmaterials and the coating used, guarantee a maximal radiantcapacity.OHA radiant strips allow the zone heating, concentrating the heat towards the Qoor and only where itis necessary, in order to diNerentiate the temperatures among the several areas of the sameenvironment. As a consequence there will be a low energy consumption and a high thermal comfort.This kind of heating system does not cause air and dust movements, which is physiologically present inall the industrial plants.MANGEABLE HEATOHA: The traditional heating through radiant stripsOHA radiant strips are apt to heat medium and/or large industrial,commercial and sport buildings, using either gas or diesel oil.The high eSciency of OHA radiant strip is due to the uniquenessof the combustion head (*), studied and optimized for SYSTEMAcombustion groups.The power of the Qame and the length of the combustion chambercontribute to the overall performances, as well as the suctionfan, which is able to guarantee the capacity of the combusted gasrecirculation in the radiant circuit (over 4000 square meters perhour) and to assure the correct depression in the combustionchamber.(*) It belongs to the blown air, mono-Qame and mono-nozzle burner classThe combustion chamber could be considered,as a matter of fact, the core of the mixingprocesses among gas and air.15Dim.Dimension [mm]Dim.Dimension [mm]Pipe Ø 300 mmPipe Ø 400 mmPipe Ø 300 mmPipe Ø 400 mmA 1075 N (*) 1142B 359 O 740C 200 P (*) 343D 664 Q 142E 333 430 R 637F 774 923 S 426 475G 157 67 T 162 113H 134 70 U 300 400I 398 319 V 344 352L 333 430 X 1049M 333 302 Y 1202Dimension [mm]Dim. 1 Pipe 2 Pipes 2 PipesA Ø300 Ø 300 Ø 400B - 335 460C 512 850 1020D 580 918 1088E 374 374 478Weight [kg/m] 19 28 35(*) in case of long plenum (supplied only when requested) the dimensions N andP are respectively 1802 and 1003 mm)COMBUSTION UNIT AND RADIANT STRIP DIMENSIONS(*) Virtual length= effective length of the radiant strip, increased by the lengths equal to the direction changing (6 metres for each change of direction). It is necessaryto increase the effective lengh of 6 metres for each 90° bend used, 9 metres for each 180° final bend, 3 meters for each 45° bend used and T branch.TECHNICAL CHARACTERISTICSMODEL OHA100 OHA200 OHA400VERSIONOHA100-50OHA100-100OHA200-115OHA200-150OHA200-180OHA400-200OHA400-250OHA400-300OHA400-400Thermal capacity kW(HI) 50 100 115 150 180 200 250 300 400Thermal power kW(HI) 45,5 93,0 105,2 138,0 165,6 183,0 230,0 276,0 366,0Thermal efficiency % 91,0 93,0 91,5 92,0 92,0 91,5 92,0 92,0 91,5Nominal consumption at 15°Cand 1013,25 mbarNatural gas G20 Nm3/h 5,29 10,58 12,17 15,87 19,05 21,16 26,46 31,75 42,33LPG Propane G31 kg/h 3,88 7,77 8,93 11,65 13,98 15,54 19,42 23,31 31,07Electric power 3/N/PE ~ 50Hz 400V 3/N/PE ~ 50Hz 400V 3/N/PE ~ 50Hz 400VElectric power max absorbed W 1350 3450 4450 4450 5700Gas connection (male) Inches 1” 1” 1” 1”Weight kg 90 230 240 240 260Fume pipe diameter mm 200 200 200Max length of fume exhaust pipe m 6 6 6 9Type B22 B22 B22MAXIMUM LENGTH OF THE CIRCUIT ACCORDING TO THE COMBUSTION UNITRadiant Strips mod. M 1pipe Ø 300 mmmin (*) m 50 100 115 150 180 200 250 300 400max (*) m 40 60 80 115 140 160 190 220 --Radiant Strips mod. U 2pipes Ø 300 mmmin (*) m 60 120 130 140 180 190 220 250 --max (*) m 25 35 50 60 80 90 110 130 --R. Strips mod. U 2 pipes Ø400 mmmin (*) m 35 50 70 80 110 115 130 160 --max (*) m -- -- -- -- -- -- -- 90 12016REFERENCES17