Understanding the greenhouse environment
The protected greenhouse environment The greenhouse environment is designed to allow plants to perform close to their genetic optimum so that the grower achieves maximum...
Tag Archives: Cooling
Calculating pad and fan requirements
The effectiveness of a pad and fan system will not only depend on the design, but also on the wet bulb temperature outside the greenhouse....
Lime – a cheap way to reduce greenhouse temperatures
Cooling a greenhouse can be just as expensive as heating, well almost. There are some very practical methods that you can use to save money. One...
Insect screens in greenhouses – effective biological control
Insect screens or thermal screens are designed to reduce heat in summer and increase temperatures during the night, but also to reduce the number of insects entering the...
Thermal screens greenhouse cooling – are they effective
Heat is always a problem in greenhouses during summer months and even during winter in some areas. Extreme high temperatures cause stress in plants and...
Evaporative pads – maintenance in commercial hydroponics
The installation of new evaporative pads is expensive. The material should last at least two years if not more. With good regular maintenance, evaporative pads...
Cooling a greenhouse with evaporative pad-and-fan
Pad-and-fan systems, also called evaporative pad-and-fan systems, is the most common method of cooling a greenhouse in warm weather regions. Although not optimal, it is better...
Cooling a greenhouse with fogging nozzles
Many growers have tried reducing temperatures (cooling) with fogging nozzles. The concept of spraying the air with microscopic water droplets which absorb the heat in the...
