Convert Btu (IT)/hour to ton (refrigeration)

What is a Btu (IT)/hour?

The traditional British system of metrics still utilizes its own thermal unit for the evaluation of such energy value. Thus, many regions apply it instead of the calorie to describe heat, as well as in designating the capacity of heaters and refrigerators in Btu (IT)/hour. In other areas, it was replaced by joules.

This metric corresponds to the heat that makes 1-pound of water hotter for 1 degree Fahrenheit. It equals approximately 252 cal. There are also other definitions, that is why values may vary by up to 0.5%.

The most common example of its utilization is such a derivative as Btu/h. The latter is common in the specifications of equipment intended for indoor air conditioning.

If you would like to transform BTU/hour to other units, you will have to apply the following correlations:

• 1 kW approximately equals 3412 Btu/h;
• 1000 Btu/h correspond to 293 W.

What is ton (refrigeration)?

There is a special metric for the evaluation of power that is common in the USA. It is utilized mainly for the description of the workload of refrigerators and is called Ton of Refrigeration. The original definition, which was introduced in the late XIX century, stated that (TR or TOR) is the heat amount required to melt or freeze 907 kg (or one short ton) of ice during one day at zero temperature.

The (TR) appeared during the period of a transition to mechanical refrigerators from the utilization of ice. Similar processes happened to the candle- and horsepower as metrics. Both of them were replaced due to technological innovations.

As this metric is still utilized, it is taken as equal to 3.516853 kW. This modern meaning is applicable worldwide to ensure the convenience of trading and make it possible to transform units into the standard system.