Tons of refrigeration: A ton of refrigeration (RT) is a unit of power used to describe the heat-extraction capacity of air conditioning and refrigeration equipment. One ton of refrigeration is equal to the rate of heat transfer needed to freeze 1 ton (2000 pounds) of water at 0°C in 24 hours, equivalent to 12,000 BTU per hour or approximately 3.517 kilowatts.
Horsepower: Horsepower (HP) is a unit of measurement of power, originally defined as 550 foot-pounds per second. It is commonly used to measure the power output of engines. For example, the engine of a car might be rated at 300 horsepower. There are different standards for horsepower, including mechanical horsepower, metric horsepower, and electrical horsepower.
| Tons of refrigeration | Horsepower |
|---|---|
| -3 | -14.1486000000 |
| -2 | -9.4324000000 |
| -1 | -4.7162000000 |
| 0 | 0.0000000000 |
| 1 | 4.7162000000 |
| 3 | 14.1486000000 |
| 4 | 18.8648000000 |
| 5 | 23.5810000000 |
| 6 | 28.2972000000 |
| 7 | 33.0134000000 |