Belgian grower installs Plessey LED lighting

Flemish horticulturalist TomatoMasters is to install Plessey-made grow lights in a 54,560m² (5.4Ha) greenhouse development.

Hyperion 1750 luminaires are being installed, rated at 1,750μmole/s, equivalent to a 1kW SON-T lamp.

“All Hyperion grow lights come in a range of standard and tailor made spectrums, with a host of features and benefits designed to give a higher commercial return to growers,” said Plessey, which also makes the 1,000μmole/s Hyperion 1000, delivering light equivalent to a 600W SON-T.

TomatoMasters, run by the Vlaemynck family, is in negotiation with a supermarket which will require an increase in capacity of 6Ha, which is why the firm installing the extra 5.4Ha greenhouse at the Deinze site, lit with Plessey LEDs to satisfy this year-round demand.

According to TomatoMaster head grower Tom Vlaemynck: “We were made aware of Plessey by our consultants at Delphy and have worked with them on the lighting strategy for the project from the start. We were impressed by the long-life features of the Hyperion system and the simple, efficient design of the lights. This is a big investment for our business and we wanted a technologically advanced partner that would provide a long-term lighting solution.”

The greenhouse, being built by Havecon, will use diffused glass, 100% LED light and 100% rainwater from existing basins where 8,000m² is available per Ha.
Symbiotically, existing on-site co-generation supplies a local fish farm with heat and power in exchange for nutrient rich fish water.

Regarding the 1750 LED top lighting, Plessey said: “Each Hyperion LED is equivalent to a 1,000W SON-T lamp in terms of light output but with a spectrum more efficiently tuned to activate photosynthesis in tomato plants. The high output of Hyperion LEDs means far fewer units are required than other LED systems to provide the 200+ μmole/s/m² required and because they are installed on the trellis, the shading is very low.”

Due to higher light production efficiency, heat output is lower than existing luminaires, meaning more heat from other sources is needed in cold weather.

“The low radiant heat of the Hyperion allows for a more flexible lighting strategy when temperatures in the greenhouse are high and heating pipes installed in the top level of the greenhouse will be used to replace the radiant heat normally provided by HPS lighting,” said Plessey.

Plessey will be at GreenTech in Amsterdam this week. Hall 12 stand 109.

06/12/2018 - Steve Bush/Electronics Weekly

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