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Energy efficiency is not just low-hanging fruit; it is fruit on the ground. Stephen Chu, US Secretary of Energy

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  • In this Technical Update, we take a look at how air movement systems can improve the greenhouse environment and contribute to reduced energy costs, more even crops, and reduced disease risks. The update looks at fan systems and explains how apex screens can reduce unwanted natural air movement above thermal screens. Read More...
  • Because supplementary lights also produce heat, they can have a sudden impact on the temperature balance of a greenhouse when they are turned on. Get your control strategy right and the ‘waste heat’ from the lights can make a useful contribution to the heating needs of the greenhouse. Read More...
  • In our article 'Where should you position your measuring box?', we showed how relying on a measuring box placed in the traditional position at the top of a tomato crop can give non-optimised control of the greenhouse environment and lead to wasted energy. Read More...
  • This article explains some set points you can use with your climate control computer to control when your greenhouse screens open and close in relation to time of day and light level..   Starting set points for your climate control computer: (Click on table to see a larger version)           Set point 1: Absolute light limit Definition: If the light level is higher than this, the screen will open regardless of how cold it is outside. Read More...
  • The use of thermal screens has become common place on many edible crop nurseries. They've been shown to save large amount of energy, paying back their cost quickly. In 2005, HDC project PC 198 showed that a thermal screen could save 100 kWh/m2 p.a. Read More...