light-co2-temperature-relative-humidity-and-photosynthesis

jpcyan2

In Bloom
Thats a good read and breaks down the process pretty well. Thanks for the info.

One thing I noticed, (and I could be wrong) in the portion describing DIF. Are their calculations/ their equations incorrect and the final solution correct?
I think they are confusing the actual degrees and using a conversion factor on the ºC to ºF instead of just subtracting the amount directly from each.
I'll paraphrase/quote and post the portion I am speaking of, and see what ya'll get from it.

"So, if our daytime temp is 28ºC (82.4ºF) and night time 18ºC (64.4ºF)- DIF would be 10ºC (50ºF)."

While a temperature of 10ºC is equal to 50ºF, this does not seem to be correct when calculating the DIF. It should be 18ºF DIF between day and night temps.
Am I just high? :LOL: They do come to the correct conclusion later in the paragraphs. ;)
I would hope no one (Americans) using the ºF temps scale would try to lower their temps 50º.❄🥶😁
 
Thats a good read and breaks down the process pretty well. Thanks for the info.

One thing I noticed, (and I could be wrong) in the portion describing DIF. Are their calculations/ their equations incorrect and the final solution correct?
I think they are confusing the actual degrees and using a conversion factor on the ºC to ºF instead of just subtracting the amount directly from each.
I'll paraphrase/quote and post the portion I am speaking of, and see what ya'll get from it.

"So, if our daytime temp is 28ºC (82.4ºF) and night time 18ºC (64.4ºF)- DIF would be 10ºC (50ºF)."

While a temperature of 10ºC is equal to 50ºF, this does not seem to be correct when calculating the DIF. It should be 18ºF DIF between day and night temps.
Am I just high? :LOL: They do come to the correct conclusion later in the paragraphs. ;)
I would hope no one (Americans) using the ºF temps scale would try to lower their temps 50º.❄🥶😁
I am 81 high and 59 low. I need a thermostat outlet to kill my exhaust when temps get low after lights out. The stink though.....
 

Deebs

The Sentient Naturewalker
Staff member
Moderator
"So, if our daytime temp is 28ºC (82.4ºF) and night time 18ºC (64.4ºF)- DIF would be 10ºC (50ºF)

Yeah....I think I see their error.. the diff 10C or 18F....your right
I think they just took the 10C and did a Fahrenheit conversion.

(10°C × 9/5) + 32 = 50°F
 
Last edited:

jpcyan2

In Bloom
I am 81 high and 59 low. I need a thermostat outlet to kill my exhaust when temps get low after lights out. The stink though.....

I had a the same problem during really cold winter months. By morning my house would reek of a skunks arse when I shut off the filter/exhaust with the lights.
Eventually just setup a second, smaller carbon filter and fan on a timer. It was just to recirculate the air inside the room during the portion of the dark hours when the temps dropped too low.
Later switched to a thermostat controlled duct damper/diverter. It wasn't perfect , and was kind of rigged up, but it worked.
It's been several years, but if I can find a link to the type I used I'll post it.
 
I had a the same problem during really cold winter months. By morning my house would reek of a skunks arse when I shut off the filter/exhaust with the lights.
Eventually just setup a second, smaller carbon filter and fan on a timer. It was just to recirculate the air inside the room during the portion of the dark hours when the temps dropped too low.
Later switched to a thermostat controlled duct damper/diverter. It wasn't perfect , and was kind of rigged up, but it worked.
It's been several years, but if I can find a link to the type I used I'll post it.
Thanks. I have an extra filter setup too. Good idea!!
 
Top Bottom