“Even if the outdoor climate conditions change, we can ensure that the light levels in the greenhouse are consistent by quickly turning the LEDs on or off.†Rick van der Burg, Delphy Improvement Centre Cultivation Manager background The Delphy Improvement Centre in Bleiswijk is a modern conservatory facility. The global innovative cultivation concepts and technical equipment are developed, tested and displayed here. “We are always looking for new methods of planting and studying how to apply new methods to all types of crops,†says cultivation manager Rickvan der Burg. In a 1,000 square meter, diffuse-reflective glass greenhouse, a three-year study supported by multiple projects has just ended. The overall goal of the study is to plant the perfect rose in an energy-saving manner, and to test cultivars. It is 'Red Naomi'. The study was conducted under the management of the 'Kas als Energiebron' project at Wageningen University and Research Center. In October 2015, the greenhouse used an OPAC heat exchanger to absorb hot air above the curtain. This approach improves the microclimate in the greenhouse and thus increases yield. Until April 2016, the greenhouse has been illuminated with conventional high-pressure sodium lamps to achieve light levels of 200 μmol/m2/s. The original lighting system was then replaced with the Philips GreenPower LED top light module, which provides 205 μmol/m2/s illumination. challenge Dutch rose growers must comply with stricter light pollution regulations. Artificial light must be isolated from the outside world during most of the fill time. High pressure sodium lamps produce heat more than LEDs. If the temperature reaches 22-23 ° C under the curtain, it will affect the quality of the rose. LEDs have low heat dissipation and can solve this problem. Yield and quality increase to some extent as the light level rises. Rose growers therefore want to enhance lighting, and high-pressure sodium lamps have limitations due to heat production. Growers value LED testing and hope to gain more knowledge and information and apply it to their greenhouses. solution 100% LED lighting is a new study initiated by the Rose Cultivation Cooperative Association and belongs to the 'Kas als Energiebron' project. This project was supported by Philips Plant Lighting, LTOGlaskracht and the Ministry of Economic Affairs. Philips plant lighting design provides a 100% LED fill light solution to ensure that the light is at the same level as the original high pressure sodium lamp. In this experiment, energy conservation is one of the important goals. LED lighting can be turned on separately in two parts, making it possible to provide only 50% of the illumination. One of the advantages of LEDs is that they can be turned on and off quickly, keeping the daytime light levels constant, even if the natural light changes outside. This means that there is no fluctuation in the level of light degradation. The light formula provided is a combination of DR/B and DR/W. When there are no other light sources, white light allows crop managers to correctly determine the status of crops and flowers. Philips GreenPower LED top light module Advantage The first result of the study showed that the combination of LED and OPAC heat exchangers achieved a very good and stable climate. From July to September, roses produced under 100% LED lighting are better than roses grown under high pressure sodium lamps. The reduction of the light in September and the high temperature during the day did not reduce the quality of the rose. On the contrary, the harvested rose was even better. Rick believes: “With LED lighting, the ideal light level can be achieved in some days with insufficient sunshine and high temperatures. We can further study and use this device more intelligently.†LEDs turn on and off faster than high pressure sodium lamps Faster. Immediately after opening, it provides the light intensity required by the plant, responds more quickly to changes in outdoor conditions, and makes plants grow stronger. “From the shape of the flower buds, the red color of the plants can fully reflect this. The leaves are thicker and firmer,†says Rick. From July to September, the 100% Philips GreenPower LED top light module, combined with the cooling system application, produces high quality, uniform shoots. Winter rose quality is the focus of the next trial. The current study lasted for a year. The information obtained from this test will be applied by relevant departments to reduce the threshold for applying LED lighting in practice. Growers Delphy Improvement Centre industry Facility gardening crop Red Naomi Brand Rose location Bleiswijk, The Netherlands solution Philips GreenPower LED Top Light Module Philips partner Certhon effect Even in unstable outdoor conditions and hot weather, the greenhouse microclimate can be better controlled. In the case of long-term closure of the curtain, the fill light does not drastically increase the greenhouse temperature. At the end of the summer, the quality and output of rose production have been improved. Shenzhen Xcool Vapor Technology Co.,Ltd , http://www.xcoolvapor.com
