Convert Nanowatts to Ton of Refrigeration
Convert Nanowatts (nW) to Ton of Refrigeration (RT) instantly and accurately.
Conversion Formula
RT = nW × 2.843451361e-13
About Nanowatts
A nanowatt (nW) is 10⁻⁹ W - the power scale of ultra-low-power embedded systems. Cardiac pacemakers deliver sensing pulses at nanowatt levels to preserve 7-10 year battery life. RFID tags harvest ~10-200 nW from reader fields. Solar cells in wristwatches and calculators operate on ambient indoor light yielding tens of nanowatts. A standard AA cell (13,500 J) discharged at 1 nW would last over 400 years. Neuromorphic chips target 10-100 nW per neuron-equivalent circuit. 1 nW = 10⁻⁹ W.
About Ton of Refrigeration
One ton of refrigeration (RT) = 12,000 BTU/h ≈ 3,517 W - the cooling rate to freeze 1 short ton (2,000 lb) of water in 24 hours. This follows from water's latent heat: 144 BTU/lb × 2,000 lb ÷ 24 h = 12,000 BTU/h. US residential AC is 1.5-5 tons; a large commercial building 500-2,000 tons; a hyperscale data centre 50,000-100,000 tons. The RT is deeply embedded in North American HVAC catalogs, load calculation software, and contractor pricing. 1 RT = 3,516.85 W.
Quick Reference Table
| Nanowatts (nW) | Ton of Refrigeration (RT) |
|---|---|
| 1 nW | 2.843 × 10-13 RT |
| 2 nW | 5.687 × 10-13 RT |
| 5 nW | 1.422 × 10-12 RT |
| 10 nW | 2.843 × 10-12 RT |
| 25 nW | 7.109 × 10-12 RT |
| 50 nW | 1.422 × 10-11 RT |
| 100 nW | 2.843 × 10-11 RT |