Water cooling
LOOK-THINK-ACT
What causes this deposit?
Front coil Back coil
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If condensation forms on cooling tubes, dust and down will also accumulate on the wet surface (especially when air velocity is high). This will considerably reduce the cooling capacity. Over time, a hard layer will form on the tubes.
Ventilation based on the RH or CO2 does not remove sufficient heat from the incubator, so additional cooling is required. This is usually done in the incubator by a water cooling system. Cold water flows in copper pipes into the incubator and is heated by the heat produced by the embryos (and ventilator motor). The amount of water flowing through the copper tubes and the temperature difference between the water entering and exiting the incubator determines the cooling capacity. The cooling capacity can be adapted by installing more copper tubes, or by using larger tubes to allow a higher flow rate of water per minute. There are various other cooling methods in addition to the coil system shown here.
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To prevent condensation on cooling tubes, it is better to use water with a higher temperature: when incoming water is warmer than 27°C (81°F), no condensation will form on the tubes. To achieve a sufficient cooling capacity, larger tubes can be used to allow a higher flow rate of water.
With climate conditions in the incubator of 37°C (99°F) and 55% RH, condensation can form quickly on the cooling tubes. This can cause problems, particularly in the hatcher.
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Two cooling coils are installed, one behind the other and two next to each other. The water flows in the opposite direction through each coil. This avoids a lower cooling effect on one side of the incubator caused by water that has already slightly heated. Ha tc he ry S i gnal s
