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Lighting

Glass

Two types of greenhouse glass

  • horticultural float glass
  • diffuse glass.

The typical glass that is used for glass greenhouses is the horticultural float glass. It is a transparent glass with a high light admittance to ensure sufficient light in the greenhouse.

The iron contents of greenhouse glass also have impact on the overall light translucency. The so-called “low-iron” glass is more transparent than regular glass. Applying AR-coatings are permanent anti-reflection coatings that reduce the reflection levels of sunlight on the glass, which results in more light in the greenhouse.

In many cases the greenhouse glass is tempered for safety reasons. This makes the glass 4 to 7 times stronger than the default form of float glass.

The size of the glass panes with which the greenhouse is glazed are dependent of the aluminum system, the trellis-span and the post-distance.

Cooling

  • Pad & Fan Cooling
  • High Pressure Fogging

The Pad & Fan cooling method is a widely applicable cooling system due to it’s simplicity. As the name indicates, it uses a combination of wet-pads and ventilators. A set of large fans blow air out of the greenhouse, causing a suction-draught through the greenhouse. On the opposite sides of the fans, pad-walls are installed which are kept wet. The suction-movement caused by the fans, forces hot outside air to be pulled into the greenhouse through the wet pads. Water from the pads evaporates into the hot air, increasing its humidity whilst lowering the temperature.

High Pressure Fogging

Similar to the Pad and Fan system, High Pressure Fogging works on the principal of evaporative cooling. Under a high pressure, water is introduced to a nozzle with a miniscule opening. In essence, water is divided into tiny particles, creating fog. When the temperature and humidity-levels in the greenhouse allow it, these water particles are absorbed into the surrounding air before they hit the leave of the crop. Just like Pad & Fan, the humidity is increased and the greenhouse air is

Drones

Pix4Dmapper Swiss based drone mapping, automatically processes terrestrial and aerial imagery acquired by light-weight UAV or aircraft using its innovative technology based purely on image content. This software converts your images into highly precise, customizable and timely results for a wide range of GIS and CAD applications.

Dutch Commercial Companies

  • http://www.nobutec.com/ Arie Noordam and Ron van der Burg. Both men had vast experience in the greenhouse construction industry

* Linkedin Profiles for Greenhouse technologies https://www.linkedin.com/topic/greenhouse-technology

Academic

Ireland

AgTech Data

* http://www.hortimax.com/ US/global (no uk office) for greenhouse technologies

* A complete guide to startup resouces in AgTech https://agfundernews.com/guide-to-startup-resources-in-agriculture.html

US Companies

* http://openag.io/ - a consortium of agTech partners and data apis

EU

Ireland

  • “Herdwatch” Farming App helps Dairy & Beef Farmers
 
agtech.txt · Last modified: 2017/06/07 02:49 by root
 
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