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joealex
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 Posted: Tue May 21, 2013 4:25 pm Post subject: Hailea 300a - Min flow rate? |
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I have Hopar Canister 2218 external filter which has a rated flow rate of 1200 L/Hr.
Planning to buy Hailea 300a chiller which requires a flow rate of 1000 - 2500L/Hr.
Is this combination fine w.r.t flow rate or Do I need any additional equipment to increase the flow rate? |
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GokulK
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| Posted: Tue May 21, 2013 7:34 pm Post subject: Re: Hailea 300a - Min flow rate? |
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Nope! You need to reach max peak for 2 reasons.
1) lower electricity consumption
2) longer chiller life.
I have hailea 150a, flow rate is 300-1200. I had an external pump with 2800l/h capacity, with that I was able to bring down temp from 31 to 25 in 25 mins. I also have dolphin canister max 1300, with that it takes 45mins to bring down 2c.
But there is a risk of breaking the connections at a higher speed ESP beyond recommended max limit.
I would say go with an external pump,
Your sequence should be, tank -> pump -> canister -> chiller -> tank.
Make sure canister is turned off. |
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joealex
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| Posted: Thu May 23, 2013 3:48 pm Post subject: Re: Hailea 300a - Min flow rate? |
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| Thanks Gokul, that was helpful. But first, I'm going to try without the extra pump. Will let you know how the experiment goes. |
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Mortis
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| Posted: Thu May 23, 2013 8:31 pm Post subject: Re: Hailea 300a - Min flow rate? |
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| Gokul I would think that the pump and chiller will be on a different circuit to the filter right ? |
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GokulK
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| Posted: Thu May 23, 2013 8:34 pm Post subject: Re: Hailea 300a - Min flow rate? |
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| I didn't understand your question. Different circuit means? |
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josyjames
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| Posted: Fri May 24, 2013 11:23 am Post subject: Re: Hailea 300a - Min flow rate? |
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| Lesser the water flow rate through the chiller, the water would become chill quickly. Correct me if I am wrong. |
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vkv
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| Posted: Fri May 24, 2013 11:39 am Post subject: Re: Hailea 300a - Min flow rate? |
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Not really. Flow needs to be optimum.
Slower flow will require mich more time to cool the entire tank volume and often causes the chiller to stay on for longer.
Higher flow rate tends to keep the temperature more consistent and switches on the chiller less.
But the correct flow is often dependent on the individual setup and the heat generation characteristics of the tank.
Better start with manufacturers recommendation and then adjust.
Regards,
Venkat |
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vkv
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| Posted: Fri May 24, 2013 11:56 am Post subject: Re: Hailea 300a - Min flow rate? |
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| Dupe post -Deleted |
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Mortis
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| Posted: Fri May 24, 2013 7:11 pm Post subject: Re: Hailea 300a - Min flow rate? |
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| Gokul I meant pump and chiller separate from filter |
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GokulK
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| Posted: Fri May 24, 2013 9:37 pm Post subject: Re: Hailea 300a - Min flow rate? |
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@Shelly - even I had the same thought initially. Then found out max flow rate is sure recommended for Indian conditions. I agree to Venkat there are other factors to be taken in to account.
Assume room temperature is 35c, chiller set temp is 25c if the flow rate is slow, certainly the water flows inside compressor gets quick cooling, but room temperature will influence more on the tank temperature due to poor circulation. It's similar to hot/dead spot in aquarium,when the water circulation is poor.
@Mortis - nope. All 3 should be connected on the same circuit. Canister->Chiller->Pump-> tank or Canister->Pump->Chiller. I prefer first option, but at times option will also do better, ESP when 3 or more filter media is used.
Never run chiller without filter, it will cause chiller sump to get clogged or coated with dust. |
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Mortis
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| Posted: Sat May 25, 2013 1:50 am Post subject: Re: Hailea 300a - Min flow rate? |
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| But if the flow rates are different between your filter and powerhead you will end up busting one of them |
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GokulK
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| Posted: Sun May 26, 2013 2:31 pm Post subject: Re: Hailea 300a - Min flow rate? |
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That really doesn't matter. If the pump capacity is 1300,still there will be a head loss. Final output to be around 800l/h and there are other factors to influence head loss.
To meet maximum flow rate you need to consider lot of factors, if the external filter has 3 or more layers then a higher capacity pump is required and the length/height of the tube matters too. |
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joealex
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| Posted: Sun May 26, 2013 7:13 pm Post subject: Re: Hailea 300a - Min flow rate? |
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Finally setup Hailea 300a chiller without using external pump. Flow rate seems to fine and doesn't seem to be reduced after connecting the chiller.
This is my setup
Tank out --> Canister Filter --> External CO2 diffuser --> Chiller --> Tank In.
Heard people say adding CO2 before chiller will corrode the chiller parts. May move it after chiller out when I find time. |
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