Air-con 24/7

Hi,

Need some professional advice here.

- Intention is to air-con 24/7 my room. Question is what temperature need to set in order to cool the water temperature to 23 deg C? Should be higher but base on experience anyone can advice how high to set?

- Also to translate that to a water chiller unit, electrically how many chillers unit will that actually replaced base on the increase monthly electrical bill?

- Will there still be heavy condensation of water droplets on tank walls @ 23deg C?

Appreciate in advance with all the help given. Cheers & happy shrimping to all....

[globalcookie]

Not professional but just a nobody's 2 cents

To have 23 degrees for your tank/water, you need to set your aircon to 22 (unless you also use fan to blow onto e water surface). If you set it at 23, e water will not be colder (or equal) to the environment.

Assuming each Chiller operates on $30 electricity per month, you need 3 chillers running to match an airconditioned room. But since you mentioned 23 degrees, I think the bill will be higher (both chiller and room comparison).

If you aircon a room, you won't hv condensation on the tank walls. Ambience and tank water temperature is very close to have any condensation.

Lastly, if you do operate 24/7 aircondition, make sure your aircon outlet pipe is sucked every month else the outflowing water will clot the pipe soon.

So, can you share what kind of project are you intending? Number of tanks, setup, etc??? Just curious.

Originally Posted by globalcookie

Not professional but just a nobody's 2 cents

To have 23 degrees for your tank/water, you need to set your aircon to 22 (unless you also use fan to blow onto e water surface). If you set it at 23, e water will not be colder (or equal) to the environment.
So, can you share what kind of project are you intending? Number of tanks setup, etc??? Just curious

if i am not wrong water tempreture will be lower then what you set. as water retain the cold better then air, so its about 2 degrees difference. you set 25-26 degrees aircon = water 23-24 degrees


yes, i am also very curious on what project you are doing. like why do you need 24/7 aircondition unless you have super many tanks

[globalcookie]

Originally Posted by longcheeze

Just curious, for 24/7, what kind of air-con is used?
Central, casement or others?

Inverter?

Originally Posted by berber

if i am not wrong water tempreture will be lower then what you set. as water retain the cold better then air, so its about 2 degrees difference. you set 25-26 degrees aircon = water 23-24 degrees

You could be right, that when the compressor kicks in, the room will be colder than water in the tank, but when the compressor stops (till next kick in), temperature of water will be lower.

So when the aircon kicks in, it will bring the room temperature down to the set temperature (maybe 1 degrees lower?) and stops. When the compressor stops working, chilling effect is stopped too.

Thus, I don't think water will be colder than room unless fan is used. At least, I observed this for my tank (in office) and when I was using chiller at home 1+yrs back. I didn't notice any point in time where water was cooler than set temperature.

I could be wrong there.

[Xmant]

Setting an air-con room is not cheap at all. You will need 2 units to do rotate-shift. By installing one unit will not be enough as you may want to do maintenance or the air-con could have breakdown.

Tank water might differ by -1 to -2.5 C from your aircon set temperature. The variation depends on where your air-con has placed.

No condensation will appear regardless what the temperature you might have set.

Why am I so sure? Because I have a shrimp room at home .

To all kakis,

Thank you all for the precious information. Actually i need that info as I'm setting up another 2 shrimp racks in 1 go. My current rack is overcrowding. And I don't think it's worth to spend 1000+ for another 2 chillers. That's why maybe it's time to go for aircon instead of running 3 chillers.

My small office tank temp is approx 23 deg C with setting of around 25. Of course provided aircon is running non stop.

I got plans to have more tanks to kick off BDS, BKK series. What to do like most of u here we shrimp SIAO liao!!!! Haha.

Set at around 25-26 degrees if you plan to on air con

If you are running 3 or more chiller then I think it's equivalent to running air-condition.

There won't me much condensation unless you keep letting hot air into the room..

Just curious, for 24/7, what kind of air-con is used?
Central, casement or others?

[sfk7]

Some marine used commercial condensers as part of their chilling method. Forgot about the technical term for it but you can check it out? Cooling the water directly instead of the whole room is more cost efficient. Unless someone use the room too eg as an office

[silane]

Originally Posted by Marc7

Hi,

Need some professional advice here.

- Intention is to air-con 24/7 my room. Question is what temperature need to set in order to cool the water temperature to 23 deg C? Should be higher but base on experience anyone can advice how high to set?

- Also to translate that to a water chiller unit, electrically how many chillers unit will that actually replaced base on the increase monthly electrical bill?

- Will there still be heavy condensation of water droplets on tank walls @ 23deg C?

Appreciate in advance with all the help given. Cheers & happy shrimping to all....

measure the temperature of your water and what you have set on the aircon, and see what diffference you get. And adjust accordingly

condenser occur on a much colder body, your tank wont be much colder, so no condensation in a aircon room