ton of refrigeration (IT) | 1 TR | 2 TR | 3 TR | 4 TR | 5 TR | 6 TR | 7 TR | 8 TR | 9 TR | 10 TR | 11 TR | 12 TR | 13 TR | 14 TR | 15 TR | 16 TR | 17 TR | 18 TR | 19 TR | 20 TR | 21 TR | 22 TR | 23 TR | 24 TR | 25 TR | 26 TR | 27 TR | 28 TR | 29 TR | 30 TR | 31 TR | 32 TR | 33 TR | 34 TR | 35 TR | 36 TR | 37 TR | 38 TR | 39 TR | 40 TR | 41 TR | 42 TR | 43 TR | 44 TR | 45 TR | 46 TR | 47 TR | 48 TR | 49 TR | 50 TR | 51 TR | 52 TR | 53 TR | 54 TR | 55 TR | 56 TR | 57 TR | 58 TR | 59 TR | 60 TR | 61 TR | 62 TR | 63 TR | 64 TR | 65 TR | 66 TR | 67 TR | 68 TR | 69 TR | 70 TR | 71 TR | 72 TR | 73 TR | 74 TR | 75 TR | 76 TR | 77 TR | 78 TR | 79 TR | 80 TR | 81 TR | 82 TR | 83 TR | 84 TR | 85 TR | 86 TR | 87 TR | 88 TR | 89 TR | 90 TR | 91 TR | 92 TR | 93 TR | 94 TR | 95 TR | 96 TR | 97 TR | 98 TR | 99 TR | 100 TR |
microwatt | 3 516 853 000 µW | 7 033 706 000 µW | 10 550 559 000 µW | 14 067 412 000 µW | 17 584 265 000 µW | 21 101 118 000 µW | 24 617 971 000 µW | 28 134 824 000 µW | 31 651 677 000 µW | 35 168 530 000 µW | 38 685 383 000 µW | 42 202 236 000 µW | 45 719 089 000 µW | 49 235 942 000 µW | 52 752 795 000 µW | 56 269 648 000 µW | 59 786 501 000 µW | 63 303 354 000 µW | 66 820 207 000 µW | 70 337 060 000 µW | 73 853 913 000 µW | 77 370 766 000 µW | 80 887 619 000 µW | 84 404 472 000 µW | 87 921 325 000 µW | 91 438 178 000 µW | 94 955 031 000 µW | 98 471 884 000 µW | 101 988 737 000 µW | 105 505 590 000 µW | 109 022 443 000 µW | 112 539 296 000 µW | 116 056 149 000 µW | 119 573 002 000 µW | 123 089 855 000 µW | 126 606 708 000 µW | 130 123 561 000 µW | 133 640 414 000 µW | 137 157 267 000 µW | 140 674 120 000 µW | 144 190 973 000 µW | 147 707 826 000 µW | 151 224 679 000 µW | 154 741 532 000 µW | 158 258 385 000 µW | 161 775 238 000 µW | 165 292 091 000 µW | 168 808 944 000 µW | 172 325 797 000 µW | 175 842 650 000 µW | 179 359 503 000 µW | 182 876 356 000 µW | 186 393 209 000 µW | 189 910 062 000 µW | 193 426 915 000 µW | 196 943 768 000 µW | 200 460 621 000 µW | 203 977 474 000 µW | 207 494 327 000 µW | 211 011 180 000 µW | 214 528 033 000 µW | 218 044 886 000 µW | 221 561 739 000 µW | 225 078 592 000 µW | 228 595 445 000 µW | 232 112 298 000 µW | 235 629 151 000 µW | 239 146 004 000 µW | 242 662 857 000 µW | 246 179 710 000 µW | 249 696 563 000 µW | 253 213 416 000 µW | 256 730 269 000 µW | 260 247 122 000 µW | 263 763 975 000 µW | 267 280 828 000 µW | 270 797 681 000 µW | 274 314 534 000 µW | 277 831 387 000 µW | 281 348 240 000 µW | 284 865 093 000 µW | 288 381 946 000 µW | 291 898 799 000 µW | 295 415 652 000 µW | 298 932 505 000 µW | 302 449 358 000 µW | 305 966 211 000 µW | 309 483 064 000 µW | 312 999 917 000 µW | 316 516 770 000 µW | 320 033 623 000 µW | 323 550 476 000 µW | 327 067 329 000 µW | 330 584 182 000 µW | 334 101 035 000 µW | 337 617 888 000 µW | 341 134 741 000 µW | 344 651 594 000 µW | 348 168 447 000 µW | 351 685 300 000 µW |
A ton of refrigeration (TR), also called a refrigeration ton (RT), is a unit of power used in some countries (especially in North America) to describe the heat-extraction capacity of refrigeration and air conditioning equipment.
Name of unit | Symbol | Definition | Relation to SI units | Unit System |
---|---|---|---|---|
ton of refrigeration (IT) | TR | ≡ 2000 lb × iceIT / 24 h: iceIT = 144 °F × 2326 J/kg·°F | ≈ 3.516853×103 W | Imperial/US |
tons of refrigeration (IT) | microwatts | tons of refrigeration (IT) | microwatts |
---|---|---|---|
1 | ≈ 3516853000 | 6 | ≈ 21101118000 |
2 | ≈ 7033706000 | 7 | ≈ 24617971000 |
3 | ≈ 10550559000 | 8 | ≈ 28134824000 |
4 | ≈ 14067412000 | 9 | ≈ 31651677000 |
5 | ≈ 17584265000 | 10 | ≈ 35168530000 |
The microwatt (µW) is equal to one millionth (10−6) of a watt. Important powers that are measured in microwatts are typically stated in medical instrumentation systems such as the EEG and the ECG, in a wide variety of scientific and engineering instruments and also in reference to radio and radar receivers. Compact solar cells for devices such as calculators and watches are typically measured in microwatts.
Name of unit | Symbol | Definition | Relation to SI units | Unit System |
---|---|---|---|---|
microwatt | µW | = 10-6 W | = 10-6 W | Metric system SI |
microwatts | tons of refrigeration (IT) | microwatts | tons of refrigeration (IT) |
---|---|---|---|
1 | ≈ 2.8434512332475E-10 | 6 | ≈ 1.7060707399485E-9 |
2 | ≈ 5.6869024664949E-10 | 7 | ≈ 1.9904158632732E-9 |
3 | ≈ 8.5303536997424E-10 | 8 | ≈ 2.274760986598E-9 |
4 | ≈ 1.137380493299E-9 | 9 | ≈ 2.5591061099227E-9 |
5 | ≈ 1.4217256166237E-9 | 10 | ≈ 2.8434512332475E-9 |
tons of refrigeration (IT) | microwatts |
---|---|
1 | ≈ 3 516 853 000 |
2.8434512332475 × 10-10 | ≈ 1 |
Symbol | Definition |
---|---|
≡ | exactly equal |
≈ | approximately equal to |
= | equal to |
digits | indicates that digits repeat infinitely (e.g. 8.294 369 corresponds to 8.294 369 369 369 369 …) |