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How many kW heater circulator do I need?

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WhiteTyrus

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I'm trying to determine the amount Watts or kW that I would need in order to maintain approximately 12 gallons of water at 110 F. The water will be flowing through 3 different jacket honey pots that will have about 25 gallons of a propane/butane mixture in two of the vessels and one at about 15-20 gallons. Thank you
 
W

WhiteTyrus

Member
WhiteTyrus said:
I'm trying to determine the amount Watts or kW that I would need in order to maintain approximately 12 gallons of water at 110 F. The water will be flowing through 3 different jacket honey pots that will have about 25 gallons of a propane/butane mixture in two of the vessels and one at about 15-20 gallons. Thank you
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Just need to know the equation I saw it on the forums once but can't find the post if someone could please help
 
Gray Wolf

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WhiteTyrus said:
Just need to know the equation I saw it on the forums once but can't find the post if someone could please help
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Waters specific heat is 1 btu/lb/F.

Maintaining it at that temperature is a function of replacing the losses. How many pounds of what mixture are you evaporating?
 
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WhiteTyrus

Member
Gray Wolf said:
Waters specific heat is 1 btu/lb/F.

Maintaining it at that temperature is a function of replacing the losses. How many pounds of what mixture are you evaporating?
Click to expand...

It's mainly 100% propane and there's usually about 60 to 70 lbs split between three different honey pots
 
Gray Wolf

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Propane would ostensibly come out of a passive system at its boiling point of -43.6F, so cooling it down a degree should return it to liquid state.

Using the Engineering Tool box latent heat for propane of 184 btu/lb, and specific heat of .39 btu/lb, 184.39 btu/lb X 70 lbs =12,907 btu to be replaced.

Most chillers are rated in BTU per hour, so you need to decide what time frame you want it removed in. There are also heat losses in the system, so I would divide my answer by .8 to give myself some margin.
 
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pusbag

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I use a 4k watt explosion proof hot water recirculator. Makes a lot of heat, heat is vapor and vapor is speed.
 
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