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Basic heat exchangers

Basic heat exchangersк

Basic heat exchangers

Application

Basic heat exchangers are designed as completing units for central air conditioners with air capacity from 10,000 to 25,000 m3/h. 
Heat carrier is hot (superheated) water according to GOST 20955-75 at temperature not more than 180ºC and pressure not more than 1.2 MPa.

Implement in moderate climate regions, allocation category 3 according to GOST 15150-69.

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Models of coils

  • General purpose coil of carbon steel
  • Corrosion proof coil (K) of stainless steel 
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Reliability targets

  • average life time not less than 9 years
  • full design service time nit less than11000 hours
  • full no-failure operating time not less than 3000 hours
  • average restoration time not more than 12 hours 

Design

Heat exchangers are multipass accordingly internal het carrier. So they can be four-, six- or eight passes depending on piped grid size.  After movement is achieved by baffle plates.

Heaters must not be installed on units with external vibration with quadratic mean more than 2mm/sec. In winter start should with heat increase not more than 30ºС per hour. Heaters can be welded or jointed through flanges to heat supply system.

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