Info on how to calculate chiller capacity

LittleBurger · September 19, 2011

Got this off from this link.

http://aquascape-aquarium.blogspot.com/2011/04/how-to-calculate-water-chillers.html

The following is a general calculation method to choose the aquarium chillers (heat factor of the lights and pump ignored before). Please note earlier, to cool water 1°C increments of 1 liter in 1 hour needed 4 Btu (British thermal units).

For example, 1000 liters aquarium - initially water temperature is 30 ° C, and the desired temperature is 25 ° C. So it takes 1000 liters x 4 Btu x (30 - 25 ° C) = 20,000 Btu.

If we use ½ HP chiller capacity (about 5000 Btu), the water chillers will run for 20.000/5.000 Btu = 4 hours. Furthermore, after the temperature reaches 25 ° C, the chiller will stop (not working) and start again at a temperature of 26 ° C (+1 ° C). After that, the time needed to lower the temperature into 25 ° C return is 1 hour.

If we use an aquarium chiller with a larger capacity, eg, 1 HP (about 9,000 Btu), then the time needed of the 1 HP chillers to work is a half of the working hours of ½ HP chillers

Conversely, if we use water chillers for aquarium with capacity less than ½ HP, then the time required for chiller to work become longer. This is what causes the chiller rapidly damaged due to lack of resources or working continuously without stopping.

flyer · October 28, 2011

Got this off from this link.

http://aquascape-aquarium.blogspot.com/2011/04/how-to-calculate-water-chillers.html

The following is a general calculation method to choose the aquarium chillers (heat factor of the lights and pump ignored before). Please note earlier, to cool water 1°C increments of 1 liter in 1 hour needed 4 Btu (British thermal units).

For example, 1000 liters aquarium - initially water temperature is 30 ° C, and the desired temperature is 25 ° C. So it takes 1000 liters x 4 Btu x (30 - 25 ° C) = 20,000 Btu.

If we use ½ HP chiller capacity (about 5000 Btu), the water chillers will run for 20.000/5.000 Btu = 4 hours. Furthermore, after the temperature reaches 25 ° C, the chiller will stop (not working) and start again at a temperature of 26 ° C (+1 ° C). After that, the time needed to lower the temperature into 25 ° C return is 1 hour.

If we use an aquarium chiller with a larger capacity, eg, 1 HP (about 9,000 Btu), then the time needed of the 1 HP chillers to work is a half of the working hours of ½ HP chillers

Conversely, if we use water chillers for aquarium with capacity less than ½ HP, then the time required for chiller to work become longer. This is what causes the chiller rapidly damaged due to lack of resources or working continuously without stopping.