Your greenhouse is designed to grab solar radiation and create the environment for the most productive growth of your plants. But even the most modern greenhouses need to cope with temperature rises in the middle of the day due to the greenhouse effect and summer’s sizzling rays. And that’s where heat gain removal or avoidance comes in.
Maintaining the right temperature in the greenhouse is obviously important. High temperatures can cause reduced stem strength, reduced flower mass, reduced leaf quantity and deformed shapes, delayed flowering, flower bud abortion and reduced growth rate. Limiting too-high temperatures in greenhouses is accomplished with natural ventilation and mechanical ventilation where heated air is exchanged with outside air. With enough air exchange, the greenhouse temperature can approach the outside temperature.