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Air Movement & Humidity
Introduction Continuing the theme of humidity control, this article goes into the detail on the value of air movement with respect to greenhouse humidity. For more information on dehumidification and plant empowerment, see our recent articles on Greenhouse Dehumidification and Plant Empowerment & Dehumidification. Thermodynamics As outlined in our previous articles, plant activity requires water…
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Plant Empowerment & Dehumidification
In a previous article, we discussed the terms related to humidity, as well as the benefits of active dehumidifiers compared with raising pipe temperatures and opening vents. This article will instead focus on the principles of Growing by Plant Empowerment (GPE) and the benefits of optimising humidity control. Plant Empowerment “Optimisation of plant growth and…
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Greenhouse dehumidification
With rising costs of energy and pressure from retailers to reduce carbon emissions, controlled environment horticulture (CEH) has been moving towards even higher efficiency production in glasshouse models. This often comes in the form of ‘closed’ or ‘semi-closed’ designs. These systems minimise air infiltration and attempt to maintain an indoor environment to maximise the effectiveness…
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Exploring energy innovation in the Netherlands
Via the GrowSave project, NFU Energy organised a 3-day Study Tour to the Netherlands in March for UK greenhouse growers. Our focus, of course, was energy – using it more efficiently, sustainably, cost-effectively and learning about new technology and innovation. The Dutch are among the top commercial horticulturalist in the world, with a particular talent…
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Energy Efficiency in Glasshouses – workshop presentations
Our most recent workshop was focused on the practical measures and actions growers and site staff can make to improve efficiencies in glasshouses to reduce energy use and cut costs. Please find the topics covered below and download copies of the presentations which were delivered by NFU Energy, Ebtech and Bridge Greenhouses: To keep up…
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How to identify high risk of condensation and possible solutions
A look at greenhouse temperature, calculated plant temperature and dew point temperature and the reasons for high condensation risk.
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How to use plant temperature
The aim is to make sure that the plant temperature is never lower than the dew-point of the air. You can take direct measurements from the plant or use a computer model to predict the temperature.
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How to avoid condensation in the greenhouse
Find out how identify and manage the risk of condensation whatever your greenhouse crop.
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How to stop unnecessary venting in the greenhouse
Practical actions to minimise ventilation whilst maintaining the humidity conditions you want.
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What is the cost of humidity control?
A controlled study of two humidity control strategies and their costs to show the effect of each strategy in the greenhouse.
