#plessey

The manufacturer of photographic film that shares the name of the town was founded in 1879 and moved to a larger factory in Basildon in 1976 Plessey had started out in Marylebone in London after the First World War as mechanical engineers exploiting the talents of a German born engineer, William Oscar Heyne. The first products were jigs and tools. In 1919 the company moved to Holloway with…

Kingston was possibly the most important market town in Surrey. Like so many places, its history was built on the wool trade. In the fifteenth and sixteenth centuries it supplied London first with Surrey Whitewear pottery and then with Redwear. As London grew, Kingston supplied many of its needs using the Thames as the vital transport link. Turnpikes were built, but the Thames reigned supreme…

Swindon would become one of the great 19th century railway towns, but at the end of the 18th century it was a place largely passed by. The canals changed this as the ambitious link between the Thames and the Avon was debated. What became the Kennet and Avon canal was the southern link through the Vale of Pewsey. A northern route branched north near Melksham and made its way between Calne and…

BBC 100 – How it Happened

If you were one of the many radio hams who had taken advantage of the supply of surplus radio parts following the ending the war, you would have enjoyed the broadcasts by the Marconi Company from Chelmsford. In1922, you would have received the first broadcasts from the British Broadcasting Company. This had been formed by leading electrical manufacturers: Marconi, GEC, BTH, Metropolitan Vickers,…

New Post has been published on http://leddaily.com/led-lighting-news/lettuce-grower-choose-plessey-led-greenhouse/

Belgian Lettuce-Grower Chooses Plessey Hyperion LED for 2 Ha Greenhouse Expansion

Plessey, a British developer of award-winning LED technologies and manufacturer of solid-state lighting products, announces that Desmet, a major Belgian lettuce-grower, will install Plessey’s new, high-power Hyperion LED top-light in 20,000 m² as part of a greenhouse extension project that will boost total cultivation area to 49,000 m².

Johan Desmet and Mirjan Vandoorne began their year-round hydroponic lettuce-growing business in Izegem, Belgium in 2004. In 2015, the couple installed 2,610 LED lights from another manufacturer in an area of 14,000 m², boosting light levels beyond what could be achieved with traditional high-pressure sodium (SON-T) lamps, thereby helping maximise crop production.

This year, the additional 20,000 m² expansion of LED lighting will only require a total of 1,680 Plessey’s Hyperion grow lights to provide the same light level. Desmet and Vandoorne’s aim is to get the largest yield and the highest-quality lettuces from every square metre of growing space. To do this, they have invested heavily in automated production, a Combined Heat and Power (CHP) system and LED lighting. LEDs give off much less heat than SON-T lamps and are around 40% more energy efficient, allowing an increased light level of 80 micromoles per m² that results in a denser, more compact crop, with better colouration.

On his selection of Plessey’s new Hyperion LED grow light, Desmet commented: “I wanted to be able to install fewer fixtures to minimise the amount of shading and get the greatest commercial return on my investment.”