A/c-co2

rzza

Well-Known Member
im under the impression that an a/c window unit will increase your CO2. is this true and is it just becuase its pulling air inside the room from outside?
 
thats not how an ac works
an ac pulls air from the room it's in then cool it ,then blows it back into the same room
whats hanging out the widow is the guts of the ac unit it makes a lot of heat
 
well i guess it technically does since it is bringing in fresh air. But you could do the same thing with a regular box fan or inline fan, just without the cooling. Natural co2 levels from fresh air are at about 300ppm. Ideally you want to be at about 1500ppm co2. hope that helps.

turtle
 
an ac does not bring in fresh air
it only reuses the air in the room to cool it
the same with your car ac
 
if air is being forced through cooled coils ITS A/C
ac-ups-new.gif
ac-1.jpg

Window and Split-system AC Units




A window air conditioner unit implements a complete air conditioner in a small space. The units are made small enough to fit into a standard window frame. You close the window down on the unit, plug it in and turn it on to get cool air. If you take the cover off of an unplugged window unit, you'll find that it contains:
  • A compressor
  • An expansion valve
  • A hot coil (on the outside)
  • A chilled coil (on the inside)
  • Two fans
  • A control unit
The fans blow air over the coils to improve their ability to dissipate heat (to the outside air) and cold (to the room being cooled).



this split system is what the guy in the video is basicly useing
ac-ups-split.gif


ac-2.jpg

the water is cooled out side the house then pumped to coils in the forced air unit

Chilled-water and Cooling-tower AC Units

In a chilled-water system, the entire air conditioner lives on the roof or behind the building. It cools water to between 40 and 45 degrees Fahrenheit (4.4 and 7.2 degrees Celsius). This chilled water is then piped throughout the building and connected to air handlers as needed. There's no practical limit to the length of a chilled-water pipe if it's well-insulated.
ac-water.gif
You can see in this diagram that the air conditioner (on the left) is completely standard. The heat exchanger lets the cold Freon chill the water that runs throughout the building.



In all of the systems described earlier, air is used to dissipate the heat from the outside coil. In large systems, the efficiency can be improved significantly by using a cooling tower. The cooling tower creates a stream of lower-temperature water. This water runs through a heat exchanger and cools the hot coils of the air conditioner unit. It costs more to buy the system initially, but the energy savings can be significant over time (especially in areas with low humidity), so the system pays for itself fairly quickly.
  1. Cooling towers come in all shapes and sizes. They all work on the same principle:
  2. A cooling tower blows air through a stream of water so that some of the water evaporates.
  3. Generally, the water trickles through a thick sheet of open plastic mesh.
  4. Air blows through the mesh at right angles to the water flow.
  5. The evaporation cools the stream of water.
  6. Because some of the water is lost to evaporation, the cooling tower constantly adds water to the system to make up the difference.
i really hopes this help you
look at how it works
trust me
 
that makes sense now. so in fact i am not growing with fresh air like i thought i was. i will be reading up on CO2, different methods etc. thanks everyone for your responses.
 
yes its a 12x8 room dedicated to my babies. its seperated into 3 different tents. veg ,flower stage 1, and flower stage 2 everything air cooled, negative pressure in the tents and small window unit. im gonna read your other post right now.
 
BURNING HYDROCARBON FUELS:
This has been the most common method of CO2 enrichment for many years. A number of commercial growers and greenhouses use it in their larger structures. The most common fuels are propane, butane, alcohol and natural gas. Any of these fuels that burn with a blue, white or colorless flame will produce carbon dioxide, which is beneficial. If a red, orange or yellow flame is present, carbon monoxide is being generated due to incomplete combustion. Carbon monoxide is deadly to both plants and people in any but the smallest quantities. Fuels containing sulfur or sulfur compounds should not be used, as they produce by-products which are harmful.
Most commercial CO2 generators that burn these fuels are too large for small greenhouse or indoor grow room applications. Some small ones are avai fable or a Coleman lantern, bunsen burner or small gas stove can be used. All of these CO2 generators produce heat as a by-product of CO2 generation, which is rarely needed in a controlled environment grow room but may prove beneficial in winter growing and cool area greenhouses.
The rate of CO2 production is controlled by the rate at which fuel is being burned. In a gas burning CO2 generator using propane, butane or natural gas, one pound of fuel produces approximately 3 pounds of carbon dioxide gas and about 1.5 pounds of water vapor. Approximately 22,000 BTUs of heat is also added. These figures can vary if other fuels are used.
To relate this to our standard example in an 8' X 8' X 8' growing area, if you used ethyl or methyl alcohol in a gas lamp or burner at the rate of 1.3 oz. per day, we would enhance the atmospheric concentration of CO2 to 1300 PPM if the room was completely sealed.
An enrichment standard of 1300 PPM was chosen as it is assumed that 1500 PPM is ideal, and that the plants will deplete the available CO2 supply by 100 PPM per hour. Remember, the normal atmosphere contains 300 PPM of CO2. A 100% air exchange (leakage) every two hours is assumed to be the average air exchange rate in most grow rooms and tight greenhouses. If many cracks and leaks are present, this exchange rate will increase significantly, but added CO2 (above 300 PPM) will also be lost. If a vent fan is in use, disregard CO2 enrichment, as it will be blown out as fast as it is generated.

see this thread for more information
https://www.rollitup.org/do-yourself/...generator.html

all the info you need is at this link
the guy who created this idea is tat2ue he can answer all your question and more
 
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