increasing flow rate

[Garydes]

Need some advise...
Which chiller is better? TECO or ARTICA?
What does horse power 1/15 means?
How to increase flowrate if my chillers need 160g/hr. will adding a external pump help to increase the flowrate so that the chiller will not kick in so fast.

Thanks

[qngwn]

You will need to know more about chillers before you start dicing to buy one.

Both chillers are good in their own ways, the main difference is the place of intake and exhaust for the air. Specific threads comparing artica and teco can be found here.

1/15HP is the indication of the strength of the chiller, to sum it up - the electricity and power it consumes, as well at the rate of cooling of the water. usually we go for oversized chilelrs, ie chillers with HP greater than what we need. afterall it's better to have you chiller running for a short period of time, than it running for 24/7.

Adding a chiller to your piping will reduce the overall flowrate through the pipes. the requirements is just a gauge and as long as you have water flowing through it at a decent rate, it shouldn't matter that much. otherwise, you can use a separate powerhead to push water through the chiller, in that way you can choose and change the flowrate through your chiller accordingly.

frequency of kicking in of chiller depends on how fast your water temperature rises. Many instances temperature probes are mounted inside the water container, and temperature will not be as accurate as measuring directly from the tank itself. installing an external probe will reduce kicking in for certain chillers as temperature inside the water container tends to be slightly higher than the tank's.
another way is to shorten the piping and hoses for your tank, as well as insulating them using aircon ducts to reduce the heat exchange rate between the water and ambient.
Also if you have the budget, some actually turn to increasing the glass wall thickness of the tank to reduce the heat exchange rate as well.

Hope this helps.

[Garydes]

Really appreciate your advise, and that really helps me alot.

The powerhead is connected between the canister and chiller, am i correct? or is connected before the canister?
I see alot of powerhead is immerse into the water, which i read from some post, that is no good to get those immuse into water as it create some heat to the water too.
If the flowrate needed for the chiller is 750 L/h, do i get the pump that specific more (ie 1000 L/H). i am just wondering if the pump is so strong, will it my shrimp end up all get suck at the inlet pipe.

I am having a 2ft tank, and have shrimps, past few months my shrimps doesn't seems to be living, i have fans to blow the water to ensure the temp is not that high, but still cannot make it. with fan, it does makes the tank dirty with white marks on the rim as the water evaporate very fast. so i decided to get a chiller, i search thru the website and found TECO and Artica.
My house is pretty small so will be getting something small and reliable. JBJ has a smaller unit call mini artica which really nice...however the HP is 1/15, that makes me worry, however after your explanation, it should be alright to get Artica.

I would think TECO's chiller design is quite special, the inlet and outlet has a knob to turn water flow off, other then that is nothing special. and is quite big. (TECO TR5 - HP 1/12)

I will take your advise to look for aircon duct to insulate the pipes and also shorten the hoses. How i wish i can change to increase the thickess of the tank...maybe next time, if i am successful with this tank.

[qngwn]

The last time I had a 2ft tank, when I used 1/15HP, it ran for 45min rest for around 30 to 35 min. Then I upgraded to a 1/10HP where it ran 20min and rested for 30 to 45 min. Quite a big difference in electricity bills.

If you're afraid that shrimps will get sucked in, do get some prefilter mesh inlets so that they will not get sucked Ito the pump.

The connection should be
Tank - pump - chiller - tank

Power head or canister, both will generate heat as they are pumps. As mentioned, as long as you have decent and not dripping flow rate through your chiller, it should be fine.

What type of shrimps you keeping? Have you consulted anyone else? It might not be a temperature problem as most of them can survive at around 24 to 28deg. It would most probably be a water parameter problem that I see.


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[Garydes]

I am having CRS (red and black), that is one of the reason for me to get the chiller. I guess you are vry right, is the water parameters that is more crucial. This time round i am going to do a major re-setting of my tank. Have you use Benibachi products before?

[erwinx]

Need some advise...
Which chiller is better? TECO or ARTICA?
What does horse power 1/15 means?
How to increase flowrate if my chillers need 160g/hr. will adding a external pump help to increase the flowrate so that the chiller will not kick in so fast.

Thanks

I am also wondering whether we can add an external pump to bring back the flowrate to the original level after chiller is added, i.e.:

Tank ---> Canister filter ---> Chiller --> pump ---> Tank. Pumps seems relatively inexpensive compared to buying a whole new canister filter?

[qngwn]

pumps connected in series:
flowrate constant
H max increase

pumps connected in parallel:
flowrate increase
H max constant

[David]

The flow rate will not be reduced to such a point where you need a power head. If it does to a certain sense, would it not be better just to either get a bigger external filter or a second of similar type and run it parallel?

Its better to overrate the chiller for your tank requirement. If not wrong, the Teco has the option to install a UV Sterilzer into the chiller. I know the 1/10 model does not but the 1/15 does....

[Garydes]

i want to clarify again the sequence of the setup.

tank -> canister filter -> pump -> chiller -> tank or
tank -> pump -> canister filter -> chiller -> tank

I am not using canister filter actually, am using TOTTO filter, thus the flow rate is too slow due too many column of filter

The chiller needs a flowrate of 160 li/hr, and my filter flow rate is too slow, so though of adding pump to increase the flowrate. Is it better to place the pump before the filter or after the filter?

Please advise.

[qngwn]

I think you missed my post.

pumps connected in series:
flowrate constant
H max increase

pumps connected in parallel:
flowrate increase
H max constant

I have tried and experimented it for myself. As for the reason, most probably the flowrate drop due to a bottleneck issue and will not be able to increase flowrate if the bottleneck is still in the same pipeline. Perhaps some fluid mechanics engineer or pipeline engineer can explain to you the reasons.

To increase overall flowrate you need to connect them in parallel as mentioned by David.

Tank - Canister Filter - Tank
Tank - Chiller - Tank

Run both at the same time.


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[Atham]

i want to clarify again the sequence of the setup.

tank -> canister filter -> pump -> chiller -> tank or
tank -> pump -> canister filter -> chiller -> tank

I am not using canister filter actually, am using TOTTO filter, thus the flow rate is too slow due too many column of filter

The chiller needs a flowrate of 160 li/hr, and my filter flow rate is too slow, so though of adding pump to increase the flowrate. Is it better to place the pump before the filter or after the filter?

Please advise.

Hi
Did you connect the Totto filter to a chiller? Just curious.
+1 to run any separate high flow filter to your chiller.

[qngwn]

Missed out:
Tank - Canister Filter - Tank
Tank - Pump - Chiller - Tank


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[Garydes]

Hi QNGEN, thanks man, I finally figure what you mean.....

edit: kindly refrain from using sms lingo, even if by accident you are able to edit your own posts within a short time frame.

[qngwn]

Hope it helps. Do continue to try and post your results so that people can refer to this thread for help in future

[Garydes]

QW, sure...will do that, and will try to take some pic...Thanks