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Air heating units model АО2

Air heating units model АО2к

Air heating units model АО2

Application of air-heating unit model АО 2

hese units are applied to heat air in a farm, industrial and civil facilities.

Floor mounted unit. Heat carrier is hot water or high pressure hot water or dry saturated steam within temperature 180°С and pressure 1,2 MPa. Heat carrier must be according item 4 of DDD 34.20.501-95.15-Е “standard code operating rules of power plants and electric networks”. Air should be free of adhesive substances and fibrous materials as per GOST 12.1.005-88. 

The unit should be used in macroclimatic regions with moderate and cold climate (UHL) and allocation category 3 according to GOST 15150. Heat carrier temperature is not more than 180°C and pressure is not more than 1.2 MPa.

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Design of air-heating unit model АО 2

Unit consists of heating coil KCк (КПСк), axial fan BO 12-300 and ribbed water heating coils located in steel casing. Louvre shutters are designed to change airflow.

Units АО2-20, АО2-25, АО2-50 are mounted on common welded frame. Unit АО 2-50 is equipped with two heating coils KCк 3-12.

The water coils are equipped with internally threaded pipes on the casing side for connection and supply of heat medium. Connection to heat supply system can be both welding and flange.

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Thermotechnical characteristics

  Thermotechnical characteristics shown in the table are for the following mode:  

  Entering air temperature, °C   
  +15   
  Entering water temperature, °C  
  150   
  Water pressure, MPa, less than    1,2   
  Steam pressure, МPа    0,1  
  Mass flux of air kg/(sm³·sec)  3,6  



  Specification    АО2-3    АО2-4    АО2-5    АО2-6,3    АО2-10    АО2-15  
  Air capacity, m3/h     2000    4000    5000    6300    10000    15000  
  Heat capacity kW   21,5    50,7    65    76,7    130    200  
  Air speed at outlet, m/sec   4,4  
  Motor power kW    0,18    0,18    0,75    0,55    0,75    1,1  
  Heat exchange surface, m²  8,7    13,3    16,5    22,5    35    42,5  
  Impeller rotation, r/min      1500    1500    1500    1500    1500    1500  
  Impeller ВО 12-300 №  3,15    4    5    4    6,3    6,3  
  Weight, kg    40    60    85    82    95    145  
  Length, L, mm   520    520    565    600    650    650  
  Height, Н, mm    510    640    845    640    835    1090  
  Dimension, Н1, mm    420    500    710    500    700    955  
  Dimension, H2, mm   354    430    645    430    584    840  
  Width, mm    550    652    780    775    900    1025  
  Port area, Ду, mm    32    32    32    32    50    50  



    Specification    АО2-20    АО2-25    АО2-50  
   Air capacity, m3/h    20000    25000    60000  
  Heat capacity kW    225,7    337,8    900  
  Air speed at outlet, m/sec    4,4  
  Motor power kW    0,75    3,0    7,5  
  Heat exchange surface, m²  54,1    95,8    250  
  Impeller rotation, r/min    1000    1500    750  
  Axial fan ВО 12-300 №  8    8    12,5  
  Weight, kg    230    360    860  
  Length, L, mm    800    800  
  Height, Н, mm    1345    1345    1685  
  Dimension, Н1, mm    1200    1200    1500  
  Dimension, H2, mm    1085    1085    1392  
  Width, mm    1025    1275    1775  
  Port area, Ду, mm     50    50    50  
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