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Recommendations for the determination of capillary tube size
Table considers condensing temperature Tc = 45 °C and heat exchanger in capillary..
Increase length 2% per each K of increase of condensing temperature..
TABLE FOR REFRIGERANT R600a (LBP)
Capillary tube length (m)
QASH M Capillary tube internal diameter (mm) & Evaporating temperature (°C)
0,60,70,80,91
kcal/hkg/h-30-23,3-30-23,3-30-23,3-30-23,3-30-23,3
550,693,133,28        
600,752,642,77        
650,812,262,36        
700,871,952,05        
750,931,711,79        
801,001,511,58        
851,061,341,403,033,18      
901,121,201,252,712,84      
951,181,081,132,432,55      
1001,25  2,202,31      
1051,31  2,002,09      
1101,37  1,821,91      
1151,43  1,671,75      
1201,49  1,541,613,143,28    
1301,62  1,311,372,672,80    
1401,74   1,192,312,42    
1501,87    2,012,11    
1601,99    1,771,853,333,49  
1702,12    1,571,642,953,10  
1802,24    1,401,472,642,77  
1902,37    1,261,322,372,49  
2002,49    1,141,192,142,25  
2102,62    1,031,081,952,043,393,56
2202,74      1,771,863,093,25
2302,87      1,631,712,822,97
2402,99      1,491,572,592,73
2503,11      1,381,452,392,51
QASH is the cooling capacity under ASHRAE (LBP) condition corresponding to the indicated mass flow rate M (liquid subcooled down to 32 °C, return gas superheated up to 32 °C)..
The relationship between length and diameter is, approximately: (L / L0) = (D / D0)5,4..
 
 
 
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