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The simplest ventilation for the greenhouse

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Hello everybody. I bring to your attention the simplest ventilation for a country greenhouse.

What is needed for that
1- digital thermostat brand W1209
2- power supply unit 12 V 1000 mA
2- fan on 12 V

The digital thermostat unit itself with a sensor.

Fan On Consumption

Whole assembly

The sensor is adjusted to the desired temperature, as soon as the temperature reaches the selected temperature, the relay is activated and the fan turns on. The thermostat has a tincture of the upper and lower limits for turning off, you can configure the fan to turn on by plus 25 degrees, and turn off by plus 20 degrees - these degrees can be rebuilt within any limits. This thermostat has been working for me in the grow box for the third year already. A fan with a diameter of 20 mm is capable of pumping up to 50 cubic meters of air per hour.
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29 comments
Author 0
Reply To quote A complaint
Quote: Valery
You can’t put a greenhouse on the ISS - a lot of firewood is needed for Buleryan! ))) As long as it flies a shadow from the ground, it is necessary to drown and drown !!! .. For each such span, about four "Progress" with firewood should be needed !!! ... It's easier to bring one "Progress" with tomatoes there!

My lamps for plants shine on the ISS \ cm all my homemade \-tomatoes grow without firewood .. the yield is such that peppers from the ISS sell them for currency to Mars, Jupiter and Saturn.
+2
Reply To quote A complaint
Many do not know how to put a greenhouse

on the ISS.

You can’t put a greenhouse on the ISS - a lot of firewood is needed for Buleryan! ))) As long as it flies a shadow from the earth, it is necessary to drown and drown !!! .. For each such span, you need about four “Progress” with firewood !!! ... It's easier to bring one “Progress” with tomatoes there!
+1
Reply To quote A complaint
Quote: Coudeyar
I'll be freerrewind a small fan for 5 watts and I’ll tell you .. with measurements.

xaxa I'm so stubborn, you will get it, I will rewind it to 20 watts. We didn’t do this on the ISS.
laugh1
0
Reply To quote A complaint
Quote: Coudeyar
There are 20 mm with such parameters on the ISS I saw .... there are a lot of interesting things.

xaxa
Quote: Coudeyar
Many do not know how to put a greenhouse

on the ISS.
0
Reply To quote A complaint
Kudeyar, what does the ISS have to do with it, if you wrote about the "simplest ventilation for a greenhouse"? The ventilation is simple, but the fans are secret with the ISS?
By the way, I didn’t put you cons. People who read comments have long understood everything.
Author -2
Reply To quote A complaint
There are 20 mm with such parameters on the ISS I saw .... there are a lot of interesting things.
-1
Reply To quote A complaint
Again dive to the side: "Fan Dimension: 40 x 40 x 28 mm". Where is the diameter of 20 mm here?
Your stubbornness amazes me: instead of admitting “yes, you made a little mistake with a diameter, actually 80 mm”, you start to dodge.
Author 0
Reply To quote A complaint
http://www.titan-cd.com/en/product/TFD-T4028-Series.html

Airflow: 26.7 CFM times 1.7 you get a cubic meter
-2
Reply To quote A complaint
Kudeyarthat is, you acknowledge that such fans do not exist.
Author 0
Reply To quote A complaint
I will be freer, rewind a small fan to 5 watts and tell you .. with measurements.
0
Reply To quote A complaint
That is, you do not know what kind of fan
with a diameter of 20 mm is capable of pumping up to 50 cubic meters of air per hour.
Author 0
Reply To quote A complaint
It all depends on the power ..0.12 amperes certainly can not do this and 4.5 amperes can
0
Reply To quote A complaint
Kudeyar,
Are you going away again? Who said:
A fan with a diameter of 20 mm is capable of pumping up to 50 cubic meters of air per hour.
? So I ask you to explain what kind of fan this is.
Author 0
Reply To quote A complaint
Look at ebay and Ali express.
0
Reply To quote A complaint
Are there such people?
Author 0
Reply To quote A complaint
If the fan is 15 watts, 2 cm .. then it is exactly the same performance.
0
Reply To quote A complaint
Kudeyar, do not go away, please, from the question: what kind of fans are 2 cm in diameter with such a performance?
Author 0
Reply To quote A complaint
For each fan it is different, do not bother! If it’s not enough, install 3 of these fans, and preferably 5 ... on one wall and 5 on another.
0
Reply To quote A complaint
Anyway, after 2 cm per second, 15 liters is too much. What should be the rotation speed for such a performance?
Author 0
Reply To quote A complaint
Directly related to performance for one size. For example, in the size of 80x80x25 DC fans, there are fans with capacities from 0.7 watts to 1.7 watts. Accordingly, the air flow varies from 40 to 68 cubic meters / hour. The air flow of powerful (5.2 W) DC fans of the same size reaches 102 cubic meters / hour
Author 0
Reply To quote A complaint
At the valve CFM is usually indicated, you multiply by 1.7 and you get cubic meters per hour, and 15 liters is a bucket.
0
Reply To quote A complaint
A fan with a diameter of 20 mm is capable of pumping up to 50 cubic meters of air per hour.
15 liters per second? I do not believe. ((
Author -5
Reply To quote A complaint
I don’t know Russian well ... don’t get it.
0
Reply To quote A complaint
And the last !!! Since you are such a "cool specialist" learn to correctly express your thoughts.
"The sensor adjusts to the desired temperature., "- the sensor is not adjustable, this value is constant. The thermostat is adjusted to the desired temperature.
boss
-1
Reply To quote A complaint
negative Everything is clear with you.
Author 0
Reply To quote A complaint
Quote: To Delusam
Well, first, do not "Poke."
Secondly, I ask again: “What is the idea? How does your finished device (you personally, just connected it) differ from the iron (also the finished product).
And the third; - From what your conclusion was made, the conclusions are: "You are not a gardener, you cannot understand." "

Are you "Nicholas 2"? You have a makeshift - Accudrel with a magnet - why is it better?
-1
Reply To quote A complaint
Quote: Coudeyar
Many people do not know how to put the greenhouse on airing automatically, from which the flowers fall in the heat of the tomatoes and there is no harvest. And to grow tomato seedlings you need 60 days ... this is not an iron !!! I went and bought a new one. You are not a gardener, you do not understand.

Well, first, do not "Poke."
Secondly, I ask again: “What is the idea? How does your finished device (you personally, just connected it) differ from the iron (also the finished product).
And the third; - From what your conclusions are made conclusions "
Author +1
Reply To quote A complaint
Many people do not know how to put the greenhouse on airing automatically, from which the flowers fall in the heat of the tomatoes and there is no harvest. And to grow tomato seedlings you need 60 days ... this is not an iron !!! I went and bought a new one. You are not a gardener, you do not understand.
-1
Reply To quote A complaint
What's the idea? Everything ready and purpose is known to everyone ?!
How would it turn out: - “To iron the clothes, the iron with thermostat must be set to the right temperature and plugged in. The iron itself will heat up to the right temperature and turn off.”
dontknow

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