ttystikk
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ttystikk,
Awesome thread. Hopefully you get more people checking it out. Super efficient setup you have, LUV it!!!
Sorry for the delay. Yes, you can definitely use an Ice Box on the dehu exhaust to remove the extra heat it puts out. Excellent idea! Some dehus out there will even have a 6" exhaust port that you can affix the Ice Box directly to.
They should stop buying bargain basement mini splits and trying to install them not knowing what they are doing then,I personally do not know anyone who did it right that is not happy with their mini and mitsu offers like a 5 year warranty.I don't know anyone who has had a mini split reliably work for more than 1 year.
They should stop buying bargain basement mini splits and trying to install them not knowing what they are doing then,I personally do not know anyone who did it right that is not happy with their mini and mitsu offers like a 5 year warranty.
I have heard about the same except one friend who put 4 heat pump splits in last summer has a warrenty issue. One of the systems has failed and it has been over 3 months and he still has not been repaired, plus the company who did the install is telling him he has to pay fright of like 200 bucks to get the thing fixed. So 3 of the 4 systems he had professionally installed is working properly and 1 is curretly in a non operating state and awaiting warrenty repair. These are the top of the line fujitsu systems installed by liscened hvac tec's. So needless to say I have been waiting to see how it plays out. I still may go with a mini split but I may opt for a regular heat pump and air handler. He payed almost 5 grand for the one thats not working right now. For 5 grand I can get a top of the line heat pump, air handler, electrostatic air filter and uv light, run ducting to where I need it and still have money left over for lunch. The real difference is in the fact I would have to run some ducting inside along with a couple of tstat controlers. I really like the ease of instaliation of a mini split but I think the uper end units are overpriced for what they are.
I like the idea of water cooling but around here the heat pump is king. They often operate at above 100 percent effecency because of the moisture in the air. For a dry environment heat pumps (a/c) work harder so not so good and not so efficent . For a comperable water cooled system the cost would be 2 to 3 times the initial expense plus an actual loss of efficency at times. It is not economically feasable to use a chiller in this environment. Now if I was in a hot arid reagon then I'm sure that would change the game but here it just don't make sense. Even the larger comercial buildings utilize heat pump tecnology around here! My ultimate goal is to be able to run all my lamps open hooded. I believe the difference in quality and increased output will make up for the difference in cooling cost. Water chilling has many apealing features but initial cost is not one for sure.
They should stop buying bargain basement mini splits and trying to install them not knowing what they are doing then,I personally do not know anyone who did it right that is not happy with their mini and mitsu offers like a 5 year warranty.
Ok, I can verify running Mitsubishi mini splits for five years no problems; also if something were to go bad it would probably be the air handler which can be cheaply replaced; the outside units are robust. Get a Mitsubishi, Fujitsu or Friedrich.
On the Chillers vs. ACs I must disagree that chillers are more efficient much less better. Not to be disagreeable but in the search for knowledge lets dispel some myths:
First, chillers are in fact modified ACs, they use the exact same technology and work in the same way but instead of cooling the air with an air handler they cool water and or coolant with a pump. So if an AC's performance is negatively effected by humidity or altitude than so will the chiller's.
Second, chillers are like old low tech ACs in that they don't use inverters like the latest most efficient ACs. Meaning they don't modulate their output according to what is needed they either run or they don't and as many know they consume the most power starting up.
Third, when looking at power consumption you have to take into account that chillers work in conjunction with fans and pumps which consume power. So when calculating for purposes of comparing cooling setups lets agree to add up all the power consumed in cooling a given grow room.
Fourth, with chillers you are using a condenser and fan to extract heat from liquid via refrigerant and then in turn using the cooled liquid to cool your grow room air. Essentially adding a step in the heat transference process which is not efficient; with an AC you extract heat from you room via refrigerant and then expel that heat via outside air with a fan and condenser.
I believe that a new inverter style AC will be more efficient than a chiller system.
PS: Although I obviously don't think I am, I could be wrong about this and am curious to see what others will say. I keep an open mind.
Great post resin,also with the chillers there are many more little things to go wrong,lots of liquid connections,pumps,ice boxes etc etc,more components=more chance for problems.
1. You've got the wrong end when considering the efficiency deficiency of AC vs. chiller; it's the ambient air that impacts an AC unit's efficiency, that is, the fact that the air the AC unit is trying to cool isn't very thermally dense. The fan blowing through the compressor section isn't the problem. It's trying to get the COLD from the AC unit to its destination that gets tougher as altitude climbs and humidity falls.
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