Convert Ton of Refrigeration to Calories per Hour
Convert Ton of Refrigeration (RT) to Calories per Hour (cal/h) instantly and accurately.
Conversion Formula
cal/h = RT × 3023949.133
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.
About Calories per Hour
One calorie per hour (cal/h) equals exactly 0.001163 W - the rate of transferring one thermochemical calorie (4.1868 J) per hour. A resting adult generates ~70-80 W ≈ 60,000-70,000 cal/h of heat. The unit appears in European and Asian HVAC standards for small-appliance heat loads and in laboratory calorimetry reporting metabolic activity of small organisms. Calorimetric enzyme assays also express catalytic heat in cal/h per unit enzyme. 1 cal/h = 0.001163 W.
Quick Reference Table
| Ton of Refrigeration (RT) | Calories per Hour (cal/h) |
|---|---|
| 1 RT | 3023950 cal/h |
| 2 RT | 6047900 cal/h |
| 5 RT | 15119700 cal/h |
| 10 RT | 30239500 cal/h |
| 25 RT | 75598700 cal/h |
| 50 RT | 151197000 cal/h |
| 100 RT | 302395000 cal/h |