Durability of SS Coils

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traderfjp
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Location: New York

Post by traderfjp » Fri. May. 08, 2009 7:22 am

I'm curious to learn how long SS coils will usually last in the corrosive environment that our stoves have? Post information about your coil, how long it has been in operation, application and if you have had any problems with it.

Coil size and Type: Custom coil 314ss, 48' in length.

Years in Operation: 2

application: I run the hw from my oil fired boiler through the coil using a brass taco. It does 90% of the heat for my basement.

Problems: None so far

Other Comments: This coil saves me a ton of money and works perfectly. Even if I turn the pump off the water will still circulate.

 
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SMITTY
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Joined: Sun. Dec. 11, 2005 12:43 pm
Location: West-Central Mass
Stoker Coal Boiler: EFM 520 Highboy
Coal Size/Type: Rice / Blaschak anthracite
Other Heating: Oil fired Burnham boiler

Post by SMITTY » Fri. May. 08, 2009 8:31 am

Coil size and Type: HILKOIL 21T (2 in series). 304L stainless steel tube. Approx. 13 feet total inside stove

Years in Operation: 1 season.

Application: Tied into oil boiler water with small circulator (incorporates safety devices already present on boiler for cheap, easy install). Will thermosiphon if power goes out.

Problems: Must watch weather & anticipate how hard to run stove in warmer temps. Had boiler water hit over 260* once. Must open check valve for water to circulate (circulates backwards from boiler design).

Other Comments: Works great, but will not handle the entire heat load of the house & DHW. Needs help from oil burner once in a while in temps. below 20* Poorly insulated 1600-1800 sq.ft. cape.
Last edited by SMITTY on Fri. May. 08, 2009 8:33 am, edited 1 time in total.

 
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ceccil
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Post by ceccil » Fri. May. 08, 2009 8:32 am

Coil size and Type: Hilkoil 18L

Years in Operation: 1

Application: Used for heating DHW. Have different valves inline to change operation. In spring and fall, coil is used to heat a tempering tank to limit firing of NG tank. In the winter when stove is running hard, I switch valves and use the tempering tank as the main HW supply and shut NG of all together.

Problems: None so far

Other comments: So far very happy with the performence of the coil. Would like to purchase a 16T to help with recovery and add a pump so I can keep my NG tank in use during the winter to have 80Gal. available. Would need to create a loop to keep both tanks hot. NG tank is about 25 ft. from stove.

Jeff


 
stokerstove
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Location: NE PA
Hot Air Coal Stoker Stove: Alaska Kodiak Stokerstove 1

Post by stokerstove » Fri. May. 08, 2009 11:06 am

Hilcoil 16T

10 years in operation

Application: installed in an Alaska Stokerstove to heat all my DHW and I dump excess HW into a 4' baseboard in the family room. Run a Grundfos pump constantly, purchased at the same time as the coil. Have to watch for power outages as the system will not circulate w/o the pump.

Problems: None, other than a weekly cleaning of fly ash off the coil.

Comments: One of the best investments I've made. I modified the holes in the stove for the coil so I can move it to where I can get the most heat out of it, in other words I can move the coil over the fire when the stove is idling, then move it again when I crank it up. I also remove the coil at the end of the season to clean whatever ash is stuck to it. Thinking about adding another 16T and trying to supply a radiant floor system for the Family room.

 
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009to090
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Location: Live Oak, FL

Post by 009to090 » Fri. May. 08, 2009 11:16 am

stokerstove wrote: I modified the holes in the stove for the coil so I can move it to where I can get the most heat out of it, in other words I can move the coil over the fire when the stove is idling, then move it again when I crank it up. I also remove the coil at the end of the season to clean whatever ash is stuck to it.
That sounds like a great idea. :idea: Can you post pics of this? :D

 
stokerstove
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Location: NE PA
Hot Air Coal Stoker Stove: Alaska Kodiak Stokerstove 1

Post by stokerstove » Sat. May. 09, 2009 10:37 am

That sounds like a great idea. :idea: Can you post pics of this? :D[/quote]

I'll post some pics as soon as I get it apart

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