DC in the Greenhouse
DC in the horticulture
The greenhouse market is widely using HID lighting fixtures to illuminate the crops. When using supplemental lighting based on AC, a lot of energy is wasted in the conversion of AC into DC in each lighting fixture. This energy loss is converted into heat waste in each fixture. If the entire greenhouse would use DC, these losses would be reduced. By centralizing conversion of AC to DC in the greenhouse, instead of local conversion in each of the lighting fixtures, a lot of energy would be saved.
DC and SON-T
Block diagram of the HID lamp connected directly to DC:
The block diagram below makes clear that central distribution panels belong to the past and are to be replaced by a local connection to a DC bus where communication and energy go together.
Direct Current Ltd also sponsors this project Gelijkspanning Komt in de Kas (DC in the Greenhouse). Direct Current Ltd gives technical support for the development of the DC infrastructure and the development of DC lighting fixtures in the greenhouse.
The following organizations displayed in the image on the right side are also sponsors of this project. For more information, please visit the website of DC Foundation at www.gelijkspanning.org. In the Hague College, we have initiated a program in cooperation with the DC Foundation in order to motivate students to work with DC and to teach the subject of DC.
Direct Current Ltd is developing for the greenhouse market a DC version of the currently used HID ballast.
In addition, a new standard is being developed for the DC infrastructure with the following starting points:
The following companies are sponsors and partners in making DC in horticulture possible: