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 |
picowatt | 3.516853 × 1015 pW | 7.033706 × 1015 pW | 1.0550559 × 1016 pW | 1.4067412 × 1016 pW | 1.7584265 × 1016 pW | 2.1101118 × 1016 pW | 2.4617971 × 1016 pW | 2.8134824 × 1016 pW | 3.1651677 × 1016 pW | 3.516853 × 1016 pW | 3.8685383 × 1016 pW | 4.2202236 × 1016 pW | 4.5719089 × 1016 pW | 4.9235942 × 1016 pW | 5.2752795 × 1016 pW | 5.6269648 × 1016 pW | 5.9786501 × 1016 pW | 6.3303354 × 1016 pW | 6.6820207 × 1016 pW | 7.033706 × 1016 pW | 7.3853913 × 1016 pW | 7.7370766 × 1016 pW | 8.0887619 × 1016 pW | 8.4404472 × 1016 pW | 8.7921325 × 1016 pW | 9.1438178 × 1016 pW | 9.4955031 × 1016 pW | 9.8471884 × 1016 pW | 1.01988737 × 1017 pW | 1.0550559 × 1017 pW | 1.09022443 × 1017 pW | 1.12539296 × 1017 pW | 1.16056149 × 1017 pW | 1.19573002 × 1017 pW | 1.23089855 × 1017 pW | 1.26606708 × 1017 pW | 1.30123561 × 1017 pW | 1.33640414 × 1017 pW | 1.37157267 × 1017 pW | 1.4067412 × 1017 pW | 1.44190973 × 1017 pW | 1.47707826 × 1017 pW | 1.51224679 × 1017 pW | 1.54741532 × 1017 pW | 1.58258385 × 1017 pW | 1.61775238 × 1017 pW | 1.65292091 × 1017 pW | 1.68808944 × 1017 pW | 1.72325797 × 1017 pW | 1.7584265 × 1017 pW | 1.79359503 × 1017 pW | 1.82876356 × 1017 pW | 1.86393209 × 1017 pW | 1.89910062 × 1017 pW | 1.93426915 × 1017 pW | 1.96943768 × 1017 pW | 2.00460621 × 1017 pW | 2.03977474 × 1017 pW | 2.07494327 × 1017 pW | 2.1101118 × 1017 pW | 2.14528033 × 1017 pW | 2.18044886 × 1017 pW | 2.21561739 × 1017 pW | 2.25078592 × 1017 pW | 2.28595445 × 1017 pW | 2.32112298 × 1017 pW | 2.35629151 × 1017 pW | 2.39146004 × 1017 pW | 2.42662857 × 1017 pW | 2.4617971 × 1017 pW | 2.49696563 × 1017 pW | 2.53213416 × 1017 pW | 2.56730269 × 1017 pW | 2.60247122 × 1017 pW | 2.63763975 × 1017 pW | 2.67280828 × 1017 pW | 2.70797681 × 1017 pW | 2.74314534 × 1017 pW | 2.77831387 × 1017 pW | 2.8134824 × 1017 pW | 2.84865093 × 1017 pW | 2.88381946 × 1017 pW | 2.91898799 × 1017 pW | 2.95415652 × 1017 pW | 2.98932505 × 1017 pW | 3.02449358 × 1017 pW | 3.05966211 × 1017 pW | 3.09483064 × 1017 pW | 3.12999917 × 1017 pW | 3.1651677 × 1017 pW | 3.20033623 × 1017 pW | 3.23550476 × 1017 pW | 3.27067329 × 1017 pW | 3.30584182 × 1017 pW | 3.34101035 × 1017 pW | 3.37617888 × 1017 pW | 3.41134741 × 1017 pW | 3.44651594 × 1017 pW | 3.48168447 × 1017 pW | 3.516853 × 1017 pW |
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) | picowatts | tons of refrigeration (IT) | picowatts |
---|---|---|---|
1 | ≈ 3.516853E+15 | 6 | ≈ 2.1101118E+16 |
2 | ≈ 7.033706E+15 | 7 | ≈ 2.4617971E+16 |
3 | ≈ 1.0550559E+16 | 8 | ≈ 2.8134824E+16 |
4 | ≈ 1.4067412E+16 | 9 | ≈ 3.1651677E+16 |
5 | ≈ 1.7584265E+16 | 10 | ≈ 3.516853E+16 |
The picowatt (pW), not to be confused with the much larger petawatt (PW), is equal to one trillionth (10−12) of a watt. Technologically important powers that are measured in picowatts are typically used in reference to radio and radar receivers, acoustics and in the science of radio astronomy.
Name of unit | Symbol | Definition | Relation to SI units | Unit System |
---|---|---|---|---|
picowatt | pW | = 10-12 W | = 10-12 W | Metric system SI |
picowatts | tons of refrigeration (IT) | picowatts | tons of refrigeration (IT) |
---|---|---|---|
1 | ≈ 2.8434512332475E-16 | 6 | ≈ 1.7060707399485E-15 |
2 | ≈ 5.6869024664949E-16 | 7 | ≈ 1.9904158632732E-15 |
3 | ≈ 8.5303536997424E-16 | 8 | ≈ 2.274760986598E-15 |
4 | ≈ 1.137380493299E-15 | 9 | ≈ 2.5591061099227E-15 |
5 | ≈ 1.4217256166237E-15 | 10 | ≈ 2.8434512332475E-15 |
tons of refrigeration (IT) | picowatts |
---|---|
1 | ≈ 3.516853 × 1015 |
2.8434512332475 × 10-16 | ≈ 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 …) |