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Semi-closed greenhouse

A semi-closed greenhouse is mechanically cooled in the summer with a heat pump. This involves harvesting the sun’s heat and storing it in order to use it for heating in the winter.
Semi-closed cultivation is aimed at reducing ventilation, and from an energetic viewpoint is beneficial for (unilluminated) fruit-vegetables, tropical pot plants and cultivation where both heat and cold are needed.

How does it work?

  1. In the greenhouse, a top cooling system is installed in order to reduce the daytime temperature.

  2. The system only goes into operation at a previously-set level of insolation.

  3. In the evening, we reduce the greenhouse temperature rapidly, to the plants’ benefit.