Flowrate thru chiller

[baileys0]

Is the flow rate thru the chiller important if you are using ext thermostat??

Can i use a lower flowrate when my chiller requires a higher flow when using ext thermostat??

[comycus]

doesn't matter whether u using ext thermostsat, higher flowrate is better. Lower flowrates will result in longer chilling times. Your chiller will have min. flowrates. Check the specifications.

[baileys0]

Noted, thank you.

[Fuzzy]

Using an external thermostat is almost always better than relying on the built in thermostat.

Mainly because the temperature you want to monitor is the tank temp and not so much the chiller reservoir temp, especially with longer tubing runs.

You should still always aim to exceed the recommended flow rate of your chiller whenever possible or practical.

[teebs]

Using an external thermostat is almost always better than relying on the built in thermostat.

Mainly because the temperature you want to monitor is the tank temp and not so much the chiller reservoir temp, especially with longer tubing runs.

You should still always aim to exceed the recommended flow rate of your chiller whenever possible or practical.

I don't really agree with exceeding the maximum flow rate of your chiller. The fact remains that the pipings in the chiller are smaller than the tubings you run the tank water through and the reservoir in the chiller is small. What happens is that if you exceed the recommended flowrate of the chiller, then you will get backflow to your chiller pump and this may cause vibrations and also noise in your chiller pump.

[Fuzzy]

I don't really agree with exceeding the maximum flow rate of your chiller. The fact remains that the pipings in the chiller are smaller than the tubings you run the tank water through and the reservoir in the chiller is small. What happens is that if you exceed the recommended flowrate of the chiller, then you will get backflow to your chiller pump and this may cause vibrations and also noise in your chiller pump.

Ah yes ok I agree. What I had more in mind was not exceeding the flow rate by an incredible amount.

More along the lines of using for example a 1200 L/hr pump for a recommended 1000 L/hr flow rate chiller.

Reason being with head/lift loss and tubing runs, canisters, media and other flow obstructions taken into consideration, you will almost never be able to produce the rated flow of your pump at the point it enters the chiller.