Smoothen temperature changes in the morning

When the sun hits the tunnel in the morning, the temperature rises very quickly. Fruits, which are full of water, warm up much slower than the air. This difference creates condensation on the fruit.

The condensation droplets take time to evaporate. Diseases such as gray mold then have the opportunity to grow on them.

The result is fruit with small black spots that rot very quickly in storage. Shelf life is reduced to a couple of days, instead of 2-3 weeks for healthy fruit.

The solution:

To smooth temperature changes, roll-ups need to adjust quickly. You need a system that is reactive and opens the roll-ups following the temperature changes. You cannot simply open them completely at sunrise, because this will create a cold shock.

Look at these graphs. Both blue lines represent one roll-up. To keep the right temperature, the first roll-up opened in 16 stages. The second roll-up gradually contributed until 10:15 am.

Now look at the temperature graph. See how the system managed to maintain the temperature within the target range.

This is how night to day transition must be done to avoid condensation on fruits, and produce marketable harvest.