Measuring Cooling Capacity
A simple way to measure cooling capacity is to think in terms of how many litres of milk can be cooled by 1°, or degree-litres.
Each 1000 litres of milk requires 1.124kWh (4046kj) to reduce its temperature by 1°, hence 1.124kWh = 1000 degree-litres.
100kWh is capable of cooling 8897 litres of milk by 10°c, or 88970 degree-litres.
235kWh is capable of cooling 20900 litres of milk by 10°c, or 209000 degree-litres.
e.g. 235kWh
---------- = 209 (x1000) degree-litres.
1.124
209000 degree-litres
-------------- = 20900 litres cooled by 10°.
10°
If cooling the milk by a smaller temperature difference, then more milk can be cooled.
If cooling less milk volume, then a greater temperature reduction can be achieved.
