Using over rated pump for chiller

[hamannbmw]

Hi,

I intend to purchase a Atman 1/2 Hp chiller , recommended pump will be 2200L/hr. My Main tank is 4 X 2 X 2 1/4, with 2 returns. I intend to use 2 X eheim 1262 in the sump, which is rated at 3400L/hr.

1 return will be directly from sump to main tank, the other return will be from sump to chiller (which will be place outside the tank cabinet) den back to the return (which is situated in the cabinet) pumping back to the main tank.

Will this works, since the chiller is recommended pump is 2200L/hr ? but due to the fact that the water will travel quite a fair distance from sump to chiller den back to return den pushes up to the main tank.

I also thought of putting a check valves between the pump n chiller so as to control the flow rate if its too strong.

Reason for not using a 2200L/hr pump for chiller becos by doing so (due to the distance travelled) it may not have to power to pump all the way back to the main tank which is about 65 inches high.

Your comments is appreciated.......

[Eric]

Hi,

I intend to purchase a Atman 1/2 Hp chiller , recommended pump will be 2200L/hr. My Main tank is 4 X 2 X 2 1/4, with 2 returns. I intend to use 2 X eheim 1262 in the sump, which is rated at 3400L/hr.

1 return will be directly from sump to main tank, the other return will be from sump to chiller (which will be place outside the tank cabinet) den back to the return (which is situated in the cabinet) pumping back to the main tank.

Will this works, since the chiller is recommended pump is 2200L/hr ? but due to the fact that the water will travel quite a fair distance from sump to chiller den back to return den pushes up to the main tank.

I also thought of putting a check valves between the pump n chiller so as to control the flow rate if its too strong.

Reason for not using a 2200L/hr pump for chiller becos by doing so (due to the distance travelled) it may not have to power to pump all the way back to the main tank which is about 65 inches high.

Your comments is appreciated.......

If you have a valve at the inlet or outlet of the chiller to control the flowrate, I see no problem with using a high rated pump......you can even make more chiller outlets at each corners of the main tank to 1) reduce the flow rate, 2) cool down the tank faster due to the cool water spread out and therefore shorten the cooling time.

[terryansimon]

I would have thought that a higher flow to chiller would result in a reduction in cooling efficiency?

I take this analogy from Physics....that if you turn the tap open for your water heater, the water can be very hot. but if you turn it on full blast, the water starts to get colder even though the heater is on. this is due to the fact that the water is not getting heated before it comes out of the faucet.

however, since this is within the confines of an environment, aka the fish tank, I think it wouldn't make too much of a difference as the water that isn't chilled will get chilled eventually. just that the turn around time may be longer.

[hamannbmw]

however, since this is within the confines of an environment, aka the fish tank, I think it wouldn't make too much of a difference as the water that isn't chilled will get chilled eventually. just that the turn around time may be longer.

I saw somewhere that if the chiller keep kicking in every few min... its going to stress out the chiller.... so can i say by using a over powered pump is better ? cos i guess the chiller will only kick in every hour or so.....

[Guinness]

I agree with Kermit....

[tdmrider]

I saw somewhere that if the chiller keep kicking in every few min... its going to stress out the chiller.... so can i say by using a over powered pump is better ? cos i guess the chiller will only kick in every hour or so.....

with ur kind of tk vol, ur chiller will not cut in n out every few mins. dun worry.

[Tanzy]

Theoretically, the greater the flow, the better the effiiciency, assuming the chiller doesn't have a flow restrictor.