Appendix 2 - Refrigerant Piping Tables; (Inch/Pound) - Daikin R-22 Refrigerant Piping Design Manual

Appendix 2 – Refrigerant Piping Tables (English Units)
Table 4: Copper Tube Data
Wall
Diameter
Nominal
Type
Diameter
(inches)
K 0.049
1/2
L 0.035
K 0.049
5/8
L 0.040
K 0.049
3/4
L 0.042
K 0.065
7/8
L 0.045
K 0.065
1-1/8
L 0.050
K 0.065
1-3/8
L 0.055
K 0.072
1-5/8
L 0.060
K 0.083
2-1/8
L 0.070
K 0.095
2-5/8
L 0.080
K 0.109
3-1/8
L 0.090
K 0.120
3-5/8
L 0.100
K 0.134
4-1/8
L 0.110
K 0.160
5-1/8
L 0.125
K 0.192
6-1/8
L 0.140
K 0.271
8-1/8
L 0.200
ASHRAE Handbook HVAC Systems And Equipment, Chapter 41, 2004.
© American Society of Heating, Refrigerating and Air-Conditioning Engineers, Inc., www.ashrae.org.
AG 31-011 • REFRIGERANT PIPING DESIGN
Diameter Surface Area
Outside D, Inside D Outside
(in .) (in .) (ft²/ft)
0.500 0.402 0.131
0.500 0.430 0.131
0.625 0.527 0.164
0.625 0.545 0.164
0.750 0.652 0.196
0.750 0.666 0.196
0.875 0.745 0.229
0.875 0.785 0.229
1.125 0.995 0.295
1.125 1.025 0.295
1.375 1.245 0.360
1.375 1.265 0.360
1.625 1.481 0.425
1.625 1.505 0.425
2.125 1.959 0.556
2.125 1.985 0.556
2.625 2.435 0.687
2.625 2.465 0.687
3.125 2.907 0.818
3.125 2.945 0.818
3.625 3.385 0.949
3.625 3.425 0.949
4.125 3.857 1.080
4.125 3.905 1.080
5.125 4.805 1.342
5.125 4.875 1.342
6.125 5.741 1.603
6.125 5.845 1.603
8.125 7.583 2.127
8.125 7.725 2.127
Cross Section
Inside (ft²/ Metal Area Flow Area
ft) (in²) (in²)
0.105 0.069 0.127
0.113 0.051 0.145
0.138 0.089 0.218
0.143 0.074 0.233
0.171 0.108 0.334
0.174 0.093 0.348
0.195 0.165 0.436
0.206 0.117 0.484
0.260 0.216 0.778
0.268 0.169 0.825
0.326 0.268 1.217
0.331 0.228 1.257
0.388 0.351 1.723
0.394 0.295 1.779
0.513 0.532 3.014
0.520 0.452 3.095
0.637 0.775 4.657
0.637 0.640 4.772
0.761 1.033 6.637
0.771 0.858 6.812
0.886 1.321 8.999
0.897 1.107 9.213
1.010 1.680 11.684
1.022 1.387 11.977
1.258 2.496 18.133
1.276 1.963 18.665
1.503 3.579 25.886
1.530 2.632 26.832
1.985 6.687 45.162
2.022 4.979 46.869
40
Working Pressure
Weight
ASTM B88 to 250°F
Annealed Drawn
Tube (lb/ft)
(PSIG) (PSIG)
0.269 894 1676
0.198 638 1197
0.344 715 1341
0.285 584 1094
0.418 596 1117
0.362 511 958
0.641 677 1270
0.455 469 879
0.839 527 988
0.654 405 760
1.037 431 808
0.884 365 684
1.361 404 758
1.143 337 631
2.063 356 668
1.751 300 573
2.926 330 619
2.479 278 521
4.002 318 596
3.325 263 492
5.120 302 566
4.291 252 472
6.510 296 555
5.377 243 456
9.674 285 534
7.609 222 417
13.867 286 536
10.200 208 391
25.911 304 570
19.295 224 421
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