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 |
petawatt | 3.516853 × 10-12 PW | 7.033706 × 10-12 PW | 1.0550559 × 10-11 PW | 1.4067412 × 10-11 PW | 1.7584265 × 10-11 PW | 2.1101118 × 10-11 PW | 2.4617971 × 10-11 PW | 2.8134824 × 10-11 PW | 3.1651677 × 10-11 PW | 3.516853 × 10-11 PW | 3.8685383 × 10-11 PW | 4.2202236 × 10-11 PW | 4.5719089 × 10-11 PW | 4.9235942 × 10-11 PW | 5.2752795 × 10-11 PW | 5.6269648 × 10-11 PW | 5.9786501 × 10-11 PW | 6.3303354 × 10-11 PW | 6.6820207 × 10-11 PW | 7.033706 × 10-11 PW | 7.3853913 × 10-11 PW | 7.7370766 × 10-11 PW | 8.0887619 × 10-11 PW | 8.4404472 × 10-11 PW | 8.7921325 × 10-11 PW | 9.1438178 × 10-11 PW | 9.4955031 × 10-11 PW | 9.8471884 × 10-11 PW | 1.01988737 × 10-10 PW | 1.0550559 × 10-10 PW | 1.09022443 × 10-10 PW | 1.12539296 × 10-10 PW | 1.16056149 × 10-10 PW | 1.19573002 × 10-10 PW | 1.23089855 × 10-10 PW | 1.26606708 × 10-10 PW | 1.30123561 × 10-10 PW | 1.33640414 × 10-10 PW | 1.37157267 × 10-10 PW | 1.4067412 × 10-10 PW | 1.44190973 × 10-10 PW | 1.47707826 × 10-10 PW | 1.51224679 × 10-10 PW | 1.54741532 × 10-10 PW | 1.58258385 × 10-10 PW | 1.61775238 × 10-10 PW | 1.65292091 × 10-10 PW | 1.68808944 × 10-10 PW | 1.72325797 × 10-10 PW | 1.7584265 × 10-10 PW | 1.79359503 × 10-10 PW | 1.82876356 × 10-10 PW | 1.86393209 × 10-10 PW | 1.89910062 × 10-10 PW | 1.93426915 × 10-10 PW | 1.96943768 × 10-10 PW | 2.00460621 × 10-10 PW | 2.03977474 × 10-10 PW | 2.07494327 × 10-10 PW | 2.1101118 × 10-10 PW | 2.14528033 × 10-10 PW | 2.18044886 × 10-10 PW | 2.21561739 × 10-10 PW | 2.25078592 × 10-10 PW | 2.28595445 × 10-10 PW | 2.32112298 × 10-10 PW | 2.35629151 × 10-10 PW | 2.39146004 × 10-10 PW | 2.42662857 × 10-10 PW | 2.4617971 × 10-10 PW | 2.49696563 × 10-10 PW | 2.53213416 × 10-10 PW | 2.56730269 × 10-10 PW | 2.60247122 × 10-10 PW | 2.63763975 × 10-10 PW | 2.67280828 × 10-10 PW | 2.70797681 × 10-10 PW | 2.74314534 × 10-10 PW | 2.77831387 × 10-10 PW | 2.8134824 × 10-10 PW | 2.84865093 × 10-10 PW | 2.88381946 × 10-10 PW | 2.91898799 × 10-10 PW | 2.95415652 × 10-10 PW | 2.98932505 × 10-10 PW | 3.02449358 × 10-10 PW | 3.05966211 × 10-10 PW | 3.09483064 × 10-10 PW | 3.12999917 × 10-10 PW | 3.1651677 × 10-10 PW | 3.20033623 × 10-10 PW | 3.23550476 × 10-10 PW | 3.27067329 × 10-10 PW | 3.30584182 × 10-10 PW | 3.34101035 × 10-10 PW | 3.37617888 × 10-10 PW | 3.41134741 × 10-10 PW | 3.44651594 × 10-10 PW | 3.48168447 × 10-10 PW | 3.516853 × 10-10 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) | petawatts | tons of refrigeration (IT) | petawatts |
---|---|---|---|
1 | ≈ 3.516853E-12 | 6 | ≈ 2.1101118E-11 |
2 | ≈ 7.033706E-12 | 7 | ≈ 2.4617971E-11 |
3 | ≈ 1.0550559E-11 | 8 | ≈ 2.8134824E-11 |
4 | ≈ 1.4067412E-11 | 9 | ≈ 3.1651677E-11 |
5 | ≈ 1.7584265E-11 | 10 | ≈ 3.516853E-11 |
The petawatt (PW) is equal to one quadrillion (1015) watts and can be produced by the current generation of lasers for time-scales on the order of picoseconds (10−12 s). One such laser is the Lawrence Livermore's Nova laser, which achieved a power output of 1.25 PW (1.25×1015 W) by a process called chirped pulse amplification. The duration of the pulse was roughly 0.5 ps (5×10−13 s), giving a total energy of 600 J.
Name of unit | Symbol | Definition | Relation to SI units | Unit System |
---|---|---|---|---|
petawatt | PW | = 1015 W | = 1015 W | Metric system SI |
petawatts | tons of refrigeration (IT) | petawatts | tons of refrigeration (IT) |
---|---|---|---|
1 | ≈ 284345123324.75 | 6 | ≈ 1706070739948.5 |
2 | ≈ 568690246649.49 | 7 | ≈ 1990415863273.2 |
3 | ≈ 853035369974.24 | 8 | ≈ 2274760986598 |
4 | ≈ 1137380493299 | 9 | ≈ 2559106109922.7 |
5 | ≈ 1421725616623.7 | 10 | ≈ 2843451233247.5 |
tons of refrigeration (IT) | petawatts |
---|---|
1 | ≈ 3.516853 × 10-12 |
284,345,123,324.75 | ≈ 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 …) |