Head loss through chiller

jjvanb · 04/05/2009, 05:34 PM

I am trying to determine how much flow is going through my sump. My return pump (mag 12) goes through a 1/3 hp chiller before going back into the tank. I checked the documantation for the chiller, it gives recommended flow rates, but nothing is mentioned about how much head loss it might impose.

Any ideas?

jjvanb · 04/06/2009, 05:00 PM

bump

jjvanb · 04/08/2009, 09:16 PM

Any ideas??

Maybe a way I can measure the output of the return line?

Thanks

Skinnysloth · 04/09/2009, 12:05 AM

I remember reading that the head loss due to a chiller is 4-6 feet; of course each chiller is different. I wish I remember where I saw that figure.

jjvanb · 04/09/2009, 01:53 PM

I was kind of guessing it might be equivilant to 6 90 degree turns which I think are 1ft head each. So, that sounds about right ... ish.

Thanks

DarG · 04/09/2009, 04:19 PM

let your return flow into a vessel of known quantity and time how long it takes for it to fill that vessel.

For example, take a 1 gallon container and time how long it takes for the return to fill it up. If it fills it in 15 seconds then do the simple math ... 1 gallon filled in 15 seconds = 4 gallons per minute = 240 gallons per hour.

How much flow you will lose through the chiller will also depend on how your pump performs against head. Pressure rated pump will lose proportionatley less than a non pressure rated pump.

I dont lose much flow at all through my tradewinds 1/3 hp chiller using a PanWorld pressure rated pump rated for about 1200 GPH.

04/05/2009, 05:34 PM	#1
jjvanb Registered Member Join Date: Mar 2005 Location: West Palm Beach, Florida Posts: 159	Head loss through chiller I am trying to determine how much flow is going through my sump. My return pump (mag 12) goes through a 1/3 hp chiller before going back into the tank. I checked the documantation for the chiller, it gives recommended flow rates, but nothing is mentioned about how much head loss it might impose. Any ideas?

04/06/2009, 05:00 PM	#2
jjvanb Registered Member Join Date: Mar 2005 Location: West Palm Beach, Florida Posts: 159	bump

04/08/2009, 09:16 PM	#3
jjvanb Registered Member Join Date: Mar 2005 Location: West Palm Beach, Florida Posts: 159	Any ideas?? Maybe a way I can measure the output of the return line? Thanks

04/09/2009, 12:05 AM	#4
Skinnysloth Registered Member Join Date: Dec 2008 Location: La Habra, CA Posts: 252	I remember reading that the head loss due to a chiller is 4-6 feet; of course each chiller is different. I wish I remember where I saw that figure.

04/09/2009, 01:53 PM	#5
jjvanb Registered Member Join Date: Mar 2005 Location: West Palm Beach, Florida Posts: 159	I was kind of guessing it might be equivilant to 6 90 degree turns which I think are 1ft head each. So, that sounds about right ... ish. Thanks

04/09/2009, 04:19 PM	#6
DarG Registered Member Join Date: Dec 2006 Posts: 5,515	let your return flow into a vessel of known quantity and time how long it takes for it to fill that vessel. For example, take a 1 gallon container and time how long it takes for the return to fill it up. If it fills it in 15 seconds then do the simple math ... 1 gallon filled in 15 seconds = 4 gallons per minute = 240 gallons per hour. How much flow you will lose through the chiller will also depend on how your pump performs against head. Pressure rated pump will lose proportionatley less than a non pressure rated pump. I dont lose much flow at all through my tradewinds 1/3 hp chiller using a PanWorld pressure rated pump rated for about 1200 GPH.