Kaff Rees (Changzhou) High-tech Co., Ltd.
Kaff Rees (Changzhou) High-tech Co., Ltd.
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In recent years, due to the increasing demand for liquefied natural gas (LNG) and liquefied petroleum gas (LPG), ultra-low temperature industry has also developed significantly. With this development, there has been a huge market for pipe supports and hangers made of non-metallic materials (compressed hardwood and high-density polyurethane foam).
HDPIR and GRE have designed and developed fixed or suspended low-temperature supports and hangers with different thermal and mechanical properties.
Performance Comparison
| Basic data | GRE | HD PIR | ||||||||
|
Temperature(°C) |
Pipe OD(do) |
Cold insulation thickness
|
Diameter of cold insulation (dn) |
Dn/do |
R |
q |
T2 |
R |
q |
T2 |
| -190.0 | 26.9 | 50 | 126.9 | 4.717 | 0.15 | -1378.63 | 1.76 | 0.71 | -294.09 | 14.54 |
| -190.0 | 33.7 | 50 | 133.7 | 3.967 | 0.17 | -1232.16 | 0.75 | 0.79 | -263.95 | 14.30 |
| -190.0 | 42.4 | 50 | 142.4 | 3.358 | 0.19 | -1107.76 | -0.32 | 0.87 | -238.35 | 14.06 |
| -190.0 | 48.3 | 50 | 148.3 | 3.070 | 0.20 | -1046.78 | -0.94 | 0.92 | -225.81 | 13.91 |
| -190.0 | 60.3 | 50 | 160.3 | 2.658 | 0.22 | -956.68 | -1.99 | 1.00 | -207.27 | 13.67 |
| -190.0 | 76.1 | 50 | 176.1 | 2.314 | 0.24 | -878.25 | -3.08 | 1.09 | -191.15 | 13.41 |
| -190.0 | 88.9 | 50 | 188.9 | 2.125 | 0.25 | -833.69 | -3.80 | 1.14 | -182.00 | 13.24 |
| -190.0 | 101.6 | 50 | 201.6 | 1.984 | 0.26 | -799.79 | -4.39 | 1.19 | -175.03 | 13.10 |
| -190.0 | 114.3 | 50 | 214.3 | 1.875 | 0.27 | -772.92 | -4.90 | 1.23 | -169.52 | 12.98 |
| -190.0 | 139.7 | 50 | 239.7 | 1.716 | 0.28 | -732.94 | -5.73 | 1.29 | -161.31 | 12.78 |
| -190.0 | 168.3 | 50 | 268.3 | 1.594 | 0.30 | -701.58 | -6.45 | 1.34 | -154.88 | 12.60 |
| -190.0 | 193.7 | 50 | 293.7 | 1.516 | 0.31 | -681.08 | -6.95 | 1.38 | -150.68 | 12.48 |
| -190.0 | 219.1 | 50 | 319.1 | 1.456 | 0.31 | -665.10 | -7.37 | 1.41 | -147.40 | 12.38 |
| -190.0 | 244.5 | 50 | 344.5 | 1.409 | 0.32 | -652.29 | -7.72 | 1.44 | -144.78 | 12.29 |
| -190.0 | 273.0 | 50 | 373 | 1.366 | 0.32 | -640.63 | -8.05 | 1.46 | -142.39 | 12.21 |
| -190.0 | 323.9 | 50 | 423.9 | 1.309 | 0.33 | -624.72 | -8.52 | 1.49 | -139.14 | 12.09 |
| -190.0 | 355.6 | 50 | 455.6 | 1.281 | 0.34 | -617.03 | -8.76 | 1.51 | -137.56 | 12.04 |
| -190.0 | 406.4 | 50 | 506.4 | 1.246 | 0.34 | -607.13 | -9.07 | 1.53 | -135.54 | 11.96 |
| -190.0 | 457.0 | 50 | 557 | 1.219 | 0.35 | -599.39 | -9.32 | 1.55 | -133.95 | 11.89 |
| -190.0 | 508.0 | 50 | 608 | 1.197 | 0.35 | -593.10 | -9.53 | 1.57 | -132.67 | 11.84 |
| -190.0 | 610.0 | 50 | 710 | 1.164 | 0.36 | -583.61 | -9.86 | 1.59 | -130.73 | 11.76 |
| -190.0 | 762.0 | 50 | 862 | 1.131 | 0.36 | -574.09 | -10.19 | 1.62 | -128.78 | 11.68 |
| -190.0 | 914.0 | 50 | 1014 | 1.109 | 0.37 | -567.68 | -10.43 | 1.63 | -127.47 | 11.62 |
| -190.0 | 1016.0 | 50 | 1116 | 1.098 | 0.37 | -564.44 | -10.55 | 1.64 | -126.81 | 11.59 |
On a purely thermal basis, HDPIR is much better than GRE at at keeping pipes cool.