Daikin R-22 - Page 47

www.DaikinApplied.com 47 AG 31-011 • REFRIGERANT PIPING DESIGN
Table 13: R-410A Minimum Capacity For Suction Riser (Tons)
Saturated
Suction
Temp
Suction
Gas
Temp
Pipe O.D. (inches)
(°F) (°F)
1/2 5/8 3/4 7/8 1-1/8 1-3/8 1-5/8 2-1/8 2-5/8 3-1/8 3-5/8 4-1/8
Area (in
2
)
0.146 0.233 0.348 0.484 0.83 1.26 1.78 3.094 4.770 6.812 9.213 11.97
0 10 0.167 0.317 0.542 0.833 1.67 2.92 4.58 9.58 17.17 26.67 40.00 55.83
20 30 0.192 0.363 0.667 0.958 1.96 3.42 5.33 11.08 19.58 30.83 45.83 64.17
40 50 0.213 0.400 0.683 1.067 2.17 3.75 6.00 12.42 21.67 35.00 51.67 71.67
Refrigeration capacity in tons is based on 90°F liquid temperature and superheat as indicated by the listed temperature. Multiply
table capacities by the following factors for other liquid line temperatures. (Table data based on line size pressure drop formula
shown on page 2.17 of ASHRAE Handbook Refrigeration 2006.)
Liquid Temperature (°F)
80 90 100 110 120 130 140
1.05 1.00 0.94 0.90 0.83 0.77 0.72
Table 14: R-407C Minimum Capacity for Suction Riser (Tons)
Saturated
Suction
Temp
Suction
Gas
Temp
Pipe O.D. (inches)
(°F) (°F)
1/2 5/8 3/4 7/8 1-1/8 1-3/8 1-5/8 2-1/8 2-5/8 3-1/8 3-5/8 4-1/8
Area (in
2
)
0.146 0.233 0.348 0.484 0.83 1.26 1.78 3.094 4.770 6.812 9.213 11.97
0 10 0.127 0.242 0.413 0.642 1.31 2.29 3.58 7.42 13.08 20.83 30.83 43.33
20 30 0.150 0.283 0.483 0.758 1.54 2.67 4.25 8.75 15.42 24.58 36.67 50.83
40 50 0.171 0.325 0.550 0.867 1.75 3.08 4.83 10.00 17.50 27.83 41.67 58.33
Refrigeration capacity in tons is based on 90°F liquid temperature and superheat as indicated by the listed temperature. Multiply
table capacities by the following factors for other liquid line temperatures. (Table data based on line size pressure drop formula
shown on page 2.17 of ASHRAE Handbook Refrigeration 2006.)
Liquid Temperature (°F)
80 90 100 110 120 130 140
1.05 1.00 0.95 0.90 0.85 0.80 0.74