How many tonnes of refrigeration are produced when 251,244 kJ are removed in one hour?

To determine the number of tonnes of refrigeration produced when 251,244 kJ are removed in one hour, it is essential to understand the relationship between energy removal in kilojoules and refrigeration in tonnes.

One tonne of refrigeration is defined as the amount of heat absorption required to freeze one tonne of water at 0°C in a 24-hour period. This is equivalent to 3.517 kW, and if we convert it to a kilojoule measure over an hour, one tonne of refrigeration removes approximately 12,000 kJ in one hour.

To find out how many tonnes of refrigeration correspond to 251,244 kJ removed in one hour, the calculation is as follows:

1. Conversion of kJ to tonnes:

[

\text{Tonnes of refrigeration} = \frac{\text{kJ removed}}{12,000 \text{kJ/tonne}}

]

[

\text{Tonnes of refrigeration} = \frac{251,244 \text{kJ}}{12,000 \text{kJ/tonne}}

]

[

\text{Tonnes of refrigeration} = 20.936 \text{