The ventilation system is essential for a greenhouse, not only for a light-deprived greenhouse. We also mentioned this aspect in the previous blog “How to Improve the Design of a Blackout Greenhouse". If you want to learn about this one, please click here.
In this regard, we have interviewed Mr. Feng, the design director of Chengfei Greenhouse, about these aspects, the factors affecting the design size of air vents, how to calculate them, and matters that need attention, etc. I sorted out the following key information for your reference.
Editor: What factors affect the size of a light-deprivation greenhouse vent?
Mr.Feng: Actually, there are many factors to affect the light deprivation greenhouse vent size. But the main factors have the size of the greenhouse, the climate in the region, and the type of plants being grown.
Editor: Are there any standards to calculate the light deprivation greenhouse vent size?
Mr. Feng: Of course. Greenhouse design needs to follow the corresponding standards so that the design of the greenhouse will be a reasonable structure and good stability. At this point, there are 2 ways to help you design the size of the light deprivation greenhouse vent.
1/ The total ventilation area should be at least 20% of the floor area of the greenhouse. For example, if the floor area of the greenhouse is 100 square meters, the total ventilation area should be at least 20 square meters. This can be achieved through a combination of vents, windows, and doors.
2/ Another guideline is to use a venting system that provides one air exchange per minute. Here is a formula:
The vent area= The volume of light deprivation greenhouse*60(the number of minutes in an hour)/10(the number of air exchanges per hour). For example, if the greenhouse has a volume of 200 cubic meters, the vent area should be at least 1200 square centimeters (200 x 60 / 10).
Editor: In addition to following this formula, what else should we pay attention to?
Mr. Feng: It's also important to consider the climate in the region when designing the vent openings. In hot, humid climates, larger vents may be necessary to prevent the buildup of excess heat and moisture. In cooler climates, smaller vents may be sufficient to maintain optimal growing conditions.
Totally speaking, the size of the vent opening should be determined based on the specific needs and goals of the grower. It's important to consult with experts and reference guidelines to ensure that the vent openings are appropriately sized for the light deprivation greenhouse and the plants being grown. If you have better ideas, feel free to contact us and discuss them with us.
Email: info@cfgreenhouse.com
Phone: (0086)13550100793
Post time: May-23-2023
