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[Q] How to stay at desire CO2 level without CO2 indicator

I

Iammygod

New member
It's getting cold here. There is a label at the back of my gas heater that uses NG saying 3600 Kcal/hr. I checked my gas station and found 8600 Kcal/m3 when my specific NG(must of it is methane, CH4) is burning. burning 1 mol NG produce 1 mol CO2

CH4 + 2O2 = CO2 + 2H2O

3600 (Kcal/hr) / 8600 (Kcal/m3) = 0.419 m3/hr CH4
0.419 m3/hr CH4 = 0.419 m3/hr CO2

1 m3 equals 1000 lit
Every mol of all ideal gases occupy 22.5 lit/mol at STP
CO2 mass is 44 gr/mol
Air mass is 29 gr/mol

0.419 (m3/hr) × 1000 (m3/hr) = 419 lit/hr CO2
419 (lit/hr) / 22.5 (lit/mol) = 18.62 mol/hr CO2
18.62 (mol/hr) × 44 (gr/mol) = 819.2 gr/hr CO2

My room dim are 3×3×4.5 meter equals 40.5 m3 or 40500 lit.

40500 lit / 22.5 (lit/mol) =1800 mol air
1800 mol × 29 (gr/mol) = 52200 gr air

To reach 1500 PPM CO2 i need 1100 PPM more CO2 as fresh air has 400 PPM CO2

52200 gr air × 1100 PPM = 57.42 gr CO2

My gas heater produce 805.2 gr/hr CO2.

57.42 gr CO2 / 819.2 (gr/hr CO2) = 0.070 hr
0.070 hr × 60 (min/hr) = 4min 12 sec

​​​No molecule can get into my room or scape... lol. i know how to reach 1500 PPM. What i don't know is how to stay at 1500 PPM because i have no CO2 controller/indicator and i don't know how much CO2 my plants absorbe per hour. I know plants need more CO2 as they grow but if you give me some information i can stay at 1500 PPM more accurately.

Anyone here has CO2 indicator and a seal area?
 
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I was reading an article. PPM is a Conversion factor for mass not volume and it can't multiply or divide on volume. We have to multiply volume of the room to air density then use 0.0013 PPM to calculate CO2 mass then divide the CO2 mass to density of CO2 to calculate volume of CO2 is needed.

Overall molar mass of Air(29 gr/mole) over molar mass of CO2 (44 gr/mol) is Conversion factor to fix this article.

Am i wrong?
 
I run a CO2 system I've done extensive research as you obviously have the only way to monitor the levels is with the gauge.... you could possibly try a CO2 detector if you were able to set the alert limit ppms... I doubt that you could considering 2% is where it starts to get dangerous for humans.... 10% which is about 1000 parts per million so I don't think you can get it CO2 detector on this one just have to buy a gauge..... once you get your desired 1200 to 1500 parts per million in a sealed room it won't be hard to keep their but again you will have to buy a gauge
 
hehehe..........I agree with Green75 here. Too many numbers man, don't forget that most of us have smoked something before we get on this website. KISS method is much easier.
 
Without numbers i can't do it manually. I have no controller yet. what do you mean by gauge? The only thing i have is a gas heater and ite specifications at the back of th unit.

Can you please tell me your controller settings and show me a pic of your plants and your garden dimensions and also tell me the time between two command of enrichment of your controller?
 
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