Vertical Flower Greenhouse Saves Energy with DryGair – FloralDaily

“The gas savings with DryGair are around 50%. But there’s also 30% more tulips”

In a recent FloralDaily article, Arjan Rood, president of KaRo BV., discusses a successful dehumidification setup in a vertical tulip greenhouse in the Netherlands. The greenhouse uses DryGair to gain control over humidity in several layers of cultivation, in order to optimize production and save energy.

The following are excerpts from the original article, published in FloralDaily magazine.

Vertical Layers Increase Humidity Problems

The math is simple: more plants create more moisture. Without proper treatment, this can lead to various molds and diseases, lowering the quality and even decreasing yields.

“I can give an example of A. de Wit, with the 4 DryGair units we have running there,” Arjan says. “This is a 3×12.8 and 60m long greenhouse. They work with moving tables of 6×0.6m. When they began with 1 layer, that worked fine. Later, with 2 layers, they used a ventilation box with a heat exchanger, which can take air from outside or inside. The box would blow air with sleeves under the second layer. However, when they put in the third layer, there was a problem with humidity.”

Using DryGair to Control Humidity in Vertical Layers

Arjan continues, “So after installing the third layer, we put in 4 DryGair units with extra strong fans and made an air canal system – 800mm with sleeves. The canals let the treated air from the DryGair units reach all layers evenly. This ensures humidity is just right for all plants. We can see the tulips don’t sweat anymore.”

“However, one of the main benefits of using dehumidification is the energy savings. The grower is very satisfied with the system because they can close the windows and keep the heat inside without worrying about humidity. The gas savings are around 50%, although every year is different, of course.”