The fields with the red border are required.
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      Cyclones calculation                
      Important note: This methodology is only useful for a first  and rough estimation      
                       
      Date:              
      Company/Plant:      
      Installation/Mill      
      Data to given:                
      Ventilation (flow rate): m3/h            
      Temperature of gas: °C (valid from 0°C to 320°C)        
      Altitude: m above the sea level          
      Estimated dust concentration: gr/m3
     
       
      Solid (dust) density: kg/m3    
      Expected pressure drop: mmH2O    
      Other restrictions:       
      Typical feed of the cyclone: Dimension in µ (*) Residue cumulated in  % (*)            
        (*) All the field must be completed      
        (*) Ascending sieves        
                   
                   
                   
                   
                   
                   
                   
                   
                       
      Preliminary calculations:        
     
     
      Pa mmHg  
                 
      Air viscosity (*): kg/m.h = kg/m.sec = cP (centipoise)  
                       
       (*) According to the following tables:                
     
     
       
     
         
      Air density: kg/m3      
                 
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      Methodology:                
      1. Cyclone configuration:                
      Type and Model:
           
      Cyclone diameter D            
      Height of tangential inlet a            
      Width of tangential inlet b            
      Immersion length of outlet tube S            
      Diameter of air outlet tube De            
      Length of cylindrical section h            
      Length of conical section z            
      Cyclone length H            
      Diameter of material outlet B            
      2. Speed inlet: m/sec (usually between 15 and 30 m/sec)      
      3. Cyclones number: (1st estimation)          
      Ventilation for 1 cyclone: m3/h = m3/sec        
      4. Cyclone diameter (D): m  
     
       
      Diameter rounded: D m    
      5. Other dimensions a m          
        b m          
        S m          
        De m          
        h m          
        z m          
        H m          
        B m          
      6. Pressure drop calculation:                
      Number of turns (Nh): (*)    
     
     
      (*) with K = 16          
      Pressure drop (Δp): Pa = mmH2O  
                 
      7. Check diameter and pressure drop:                
      Is the diameter correct?:
    (*)            
      (*) in function of other restrictions                
      Is the pressure correct?=              
      8. New calculation (*):                
      (*) If something is not correct                
      Number of cyclones:              
      Ventilation for 1 cyclone: m3/h = m3/sec        
      New cyclone diameter (D): m             
      Diameter rounded: D m          
      Other dimensions of a m          
      the cyclone: b m          
        S m          
        De m          
        h m          
        z m          
        H m          
        B m          
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      9. Efficiencies calculation:    
     
         
      Calculation of Ne:        
      Calculation of D50: µm      
                 
          100      
      Efficiencies with the formula below: Dimension in µ Residue cumulated in % Average size µ Ƞi Residue partial in % Ƞi X mi    
     
     
    %  
      %  
      %  
        %  
        %  
        %  
        %  
        %  
        %  
        %  
                      
      Efficiency of the cyclone: %
     
             
                     
      Correction for concentration?: (if concentration > 2 gr/m3)        
      Efficiency corrected: %            
      10. Recalculation:                
      If the efficiency is lower than the one desired, recalculate increasing the inlet velocity        
                       
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