The Dawg Father's DIY Vero29 960 Watt 5x5 Scrogg

RIP MR George Martin
I'm gonna have to drag out the Rhine River tracks
give them a decent listening to on my new horns as I spend the day drilling heatsinks
 
ttystikk said:
The downside of the budget high power build is heat. AC is necessary if you're in a sealed space and supplementing co2, but if not perhaps you can ventilate directly from the top of the tent?

This is the first COB build where I've seen someone mention their lights are getting hot enough to adversely affect the grow climate.

With 5400W to deal with, I am basically treating mine like an HID install in terms of required cooling capacity. If they run colder, great! If not, I'm covered.

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Wasen't the final scientific agreement on this the fact that 1000W is 1000W weather it comes from a cob system or an HPS as for as total heat contribution to the tent?
With the only way to lower the heat load is to use less watts of more efficient lighting to still get the same total photon output?
 
OneHitDone said:
Wasen't the final scientific agreement on this the fact that 1000W is 1000W weather it comes from a cob system or an HPS as for as total heat contribution to the tent?
With the only way to lower the heat load is to use less watts of more efficient lighting to still get the same total photon output?
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No, I don't agree with the above statement. It doesn't account for active heat removal.
 
OneHitDone said:
Assuming you put either option in a tent with no venting and non air cooled hood
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Then yes. But why limit oneself in such a way?

Even with extremely efficient lighting, there is excess heat to remove. The point is to arrive at the desired performance level with as little energy wasted as possible. That's a very different thing than simple heat minimization.
 
ttystikk said:
Then yes. But why limit oneself in such a way?

Even with extremely efficient lighting, there is excess heat to remove. The point is to arrive at the desired performance level with as little energy wasted as possible. That's a very different thing than simple heat minimization.
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Agree, that's why in some circumstances I would believe it is in fact cheaper or more "efficient" to run hps than led when a simple duct fan can handle cooling/circulation vs a/c and possibly even adding heaters to the led tent when growing in winter
 
OneHitDone said:
Agree, that's why in some circumstances I would believe it is in fact cheaper or more "efficient" to run hps than led when a simple duct fan can handle cooling/circulation vs a/c and possibly even adding heaters to the led tent when growing in winter
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It might be possible, but very unlikely.
 
OneHitDone said:
Agree, that's why in some circumstances I would believe it is in fact cheaper or more "efficient" to run hps than led when a simple duct fan can handle cooling/circulation vs a/c and possibly even adding heaters to the led tent when growing in winter
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get your point, but its still cheaper to use natgas, or a heatpump or an HRV for extra warmth in the winter.
 
PurpleBuz said:
get your point, but its still cheaper to use natgas, or a heatpump or an HRV for extra warmth in the winter.
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OneHitDone said:
There is no natural gas where I live.
Just shows, there is no one size fits all solution.
I don't think any tech is the "best". We need to make wise choice and find the best fit for our situations
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PurpleBuz said:
but there are heatpumps, HRVs, propane, or even flipflop flowering rooms
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HRV?

My new chiller has 'hot gas recovery', which means that it puts the heat removed from the cooling circuit into a separate hot water circuit, which will allow me to complete the dehumidification cycle, heat the growroom if temperatures fall below optimum levels, heat my home, heat my domestic hot water and much more.

This is a highly recommended approach if one is building one's own facility from scratch. The potential for HVAC savings is astronomical!
 
ttystikk said:
HRV?

My new chiller has 'hot gas recovery', which means that it puts the heat removed from the cooling circuit into a separate hot water circuit, which will allow me to complete the dehumidification cycle, heat the growroom if temperatures fall below optimum levels, heat my home, heat my domestic hot water and much more.

This is a highly recommended approach if one is building one's own facility from scratch. The potential for HVAC savings is astronomical!
Click to expand...

Heat Recovery Ventilator. hook it up to your rooms exhaust and it warms up the fresh air input.
 
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