Wayne's Brain™ - AC Analyzer version 1.2.16
Enter and adjust the parameters in the blue boxes. Click the "Analyze" button and scroll down for the results.

  Outdoor Air °F           Refrigerant / System SEER       Indoor Return Air °F   ID Supply Air °F          
              DB WB         DB    
       
   
   
    high pressure source ┌─────┐ Vapor Line °F    
╔ ═∏═ ═ ╡            │ Suction Line °F   ╔ ════∏═ ══════════════ ╗  
╚ ═════════════ ╗ │            ╞ ═══
═══
 ═╗║   ╔ ═════════════ ╝  
╔ ══Condenser══ ╝ │             │ ┌║║─┐     ╚ ══Evaporator══ ╗  
╚ ══ ══ ╗ │             │ │║   ║  │     ╔ ══ ══ ╝  
  ╔ ════ ════ ╝ │             │ │╚═╝  │     ╚ ════ ════ ╗  
  ╚ ══ -14~500psig ══ ╗ ┌──▬──┐ └──────┘      ╔ ══ -14~500psig ══ ╝  
Accumulator   (for TXV use)  
  ╔ ═════════════ ╝ Compressor ╚ ═════════════ ╗
  ║     Liquid Line °F     ___   ║
      ╚ ═══════════════∏═ ═════════════════════════ ═| |═  or  ═◙═ ═══ ╝
       
   
 
 
 
Superheat OD dry bulb, and ID wet bulb temperatures are needed to determine the Target SH  
Subcooling Normal fixed orifice subcooling for 9 or 10 seer is 3 - 30°  
Evaporator Saturation Temperature Normal evaporator saturation temperature is 30 - 40° below return air dry bulb  
Condenser Saturation Temperature Normal condenser saturation temperature for 9 or 10 seer is 20 - 30° over ambient  
Compression Ratio Normal compression ratio for 9 or 10 seer is 1.6 to 4.9  
Evaporator Temperature Difference ID dry and wet bulb temperatures are needed to determine the Target ETD  
   
 
 
 
 
     
 
 
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
Legend:       Adjustable Parameters                                    
∏   Pressure access port       Too low      Normal Too high  
TXV   Thermal eXpansion Valve           if less than   if within if greater than  
ESH   Evaporator Super Heat       TXV superheat       -      
CSH   Compressor Super Heat       subcooling       - 30     35    
EST   Evaporator Saturation Temperature           9 or 10 seer    
CST   Condenser Saturation Temperature     Fixed Orifice  subcooling       - 30     35    
DST   Discharge Saturation Temperature          
LLST   Liquid Line Saturation Temperature     Evaporator below return air       -      
ETD   Evaporator air Temperature Difference                                                    
SH   Superheat         Condenser saturation temperature over ambient            
EBR   Evaporator Below Return air temperature   13 SEER and up         -        
COA   Condenser Over outdoor Air temperature   11 and 12 SEER         -        
DA   Discharge Air       9 and 10 SEER         -        
CR   Compression Ratio       8 SEER or less         -        
OA   Outdoor Air                                                      
SH   Superheat         Compression ratio                                  
SC   Subcooling       13 SEER and up         -        
SA   Supply Air       11 and 12 SEER         -        
RA   Return Air         9 and 10 SEER         -        
        8 SEER or less         -        
           
        Tolerance for target superheat temperature              
      Tolerance for evaporator air temperature difference      
          Tolerance for manufactures TXV subcooling              
      Maximum suction line temperature above vapor line      
      Maximum temperature entering compressor            
      Estimated percentage of condenser pressure drop %