Sizing your AC - Lesson 18
Channel: hydro select
Date: 2015-12-14

http://hydroselect.com/pc/climate-control/

formulas to figure this out. It’s not very complicated. All we need to do is first off know what is our heat load. For every 1,000 watts of lighting, we have a heat load of 3,300 BTU. If we are burning CO2 in the garden, we have to add 700 BTU per 1,000 watts. This is an important part of the calculation. Remember: if you’re burning CO2, it’s 4,000 BTU for every single 1,000 watts.

Let’s take a few examples. Let’s say we’ve got 6,000 watts in our garden with CO2, so now we have a heat load of 24,000 BTU. Air conditioners are rated in tons. One ton of cooling is the equivalent of 12,000 BTU. If my heat load is 24,000 BTU, typically I would utilize a 2-ton air conditioner to deal with that heat load.

The air conditioners are very efficient. They’re going to remove some water from the air as well and they’re going to control your temperature regardless of the outdoor environment. They’re going to draw a lot of power to do so. The power consumption on a 3-ton air conditioner can be up to 30 amps, so keep this in mind when you’re looking at it, whether it’s applicable to your garden. Do you have the power necessary to run this air conditioner?

Let’s take another example. Let’s pretend that we have 10,000 watts in our garden and now we have a heat load. Without burning CO2, we have a heat load of 33,000 BTU. In that scenario, we can use a 3-ton air conditioner, 3 times 12,000 that gives us 36,000 BTU. That covers our 10-light garden. Obviously, if we’re burning CO2, we would step up to a 4-ton air conditioner.

Just remember those numbers. Take your 1,000 watts times that by 3,300. If you’re burning CO2, add 700, it’s 4,000 BTU per 1,000 watts. You can do the same thing with 600s; you’ve got ten 600s in the garden, it’s 6,000 watts. The calculations are the same and 1 ton of cooling is equivalent of 12,000 BTU. 

This is how you size your air con to your garden, but remember it’s a good idea to have a professional air-con tech on hand to install your air-con, make sure it gets installed trouble-free and to potentially help you out if you have any technical difficulties down the road.

Working in the garden creating a healthy harvest provides you with a sense of achievement and feelings of success.  When working with plants and hydroponic systems there is wide variety of products each designed with a specific purpose.

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