Building a waste oil burning stove for my shop

   / Building a waste oil burning stove for my shop #41  
Yes, most of the ones I have looked into are atmospheric pressure.
And yes, my system has the pump on the hot side and I asked the designer about it and he said the pump doesn't care when the temps are only a little over 100. Also the coils, in my case the floor loops, are the most restriction and pumps push better than they pull.

DRL
 
   / Building a waste oil burning stove for my shop #42  
bx24 said:
Why would you want to put the circulation pump on the "hot" side? I would think that it would cause less stress to the pump if you were to put it on the cold side and push rather than pull the hot water.

Good question! MY HVAC consultant and hydronic designer put my pump on the hot side. Of course with a geothermal heat pump the temps are lower than with a gas or oil fired boiler and I can put my bare hand on the pump when it has been working and achieved a steady hot temp. IT maxes out at about 115F.

My ground loop has two pumps, one pulling and one pushing but the water in that loop is never too hot to hold onto either. Maybe temps that are uncomfortable for us are still so low to the pump as to just not matter????

Pat
 
   / Building a waste oil burning stove for my shop #43  
Most standard run of the mill house boilers are around 15 psig. For a project I would suggest maybe a few pounds max to protect yourself. also don't forget expansion tank and vacuum valve if it is closed... You will be starting and stopping this project boiler a lot... If your system is hydrostatically full, is very hot and you shut it down. The water can form a strong vacuum which can suck in walls of copper heat exchangers, home made water tanks etc... This might not pertain to too many projects out there, but still worth mentioning.

Joe
 
   / Building a waste oil burning stove for my shop #44  
Joe,
Your right, mine is 12psi and has a pressurized expansion tank to take care of the vacuum
DRL
 
   / Building a waste oil burning stove for my shop #45  
First let me say sorry to LetsRoll for taking over this thread - your work looks great and it has inspired me to look into this so Thanks.

I currently inherited (when I bought this house) a wood burning stove. A simple Fisher steel box. I was all set to hook it up when I read all of the stuff about insurance issues etc.

After reading more stuff, although it is more of a pain in the a-- and I will lose a bunch of therms, a remote external boiler hut seems like the way to go for safety and insurance reasons. I plan to fabricate a tank around my current stove as well as drill a couple of 1.5" holes and weld in some heat exchange tubes. To simplify things, I am going to design a non-pressurized system with a breathable expansion tank.

Per earlier comments, I cannot argue with the pros, I will put the pump on the hot side. You guys have more experience than me with these things. Based on things I have read and heard, with a good fluid flow, the temp won't get that high in the system.

I am expecting to have to use a anti-freeze 50/50 mixture because the system will not always be in operation .... Bad idea???

I found this image of a Fisher model similar to mine. Let the Frankensteining begin!

Letsroll - Lets see how your project is coming along. As mentioned, you get full credit for inspiring my future efforts!
 

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   / Building a waste oil burning stove for my shop #46  
DRL said:
Joe,
Your right, mine is 12psi and has a pressurized expansion tank to take care of the vacuum
DRL

Yeah, me too. I have a pressurized bladder tank and an air separator which has a float with a needle and seat like in an old style carb. It will eliminate any air in the circulating fluid (anti-freeze solution)

Pat
 
   / Building a waste oil burning stove for my shop
  • Thread Starter
#47  
bx24 said:
First let me say sorry to LetsRoll for taking over this thread - your work looks great and it has inspired me to look into this so Thanks.
bx24...No need for apologizing. Threads like these is what inspired people to build project to better there way of living. Or make life allot easier.

bx24 said:
Letsroll - Lets see how your project is coming along. As mentioned, you get full credit for inspiring my future efforts!
Thanks. This last week and half has been a rough time for me (and for the family). Just to give you guys the highlights of what I been dealing with. My mother-n-law hit a cow (cow was killed), vehicle ran off the road, vehicle flipped over pinning her arm underneith the driver door. She had to be life-flighted to a trama center in Nashville,Tennesse were she under went surgury for her arm (rod was put in her arm and several pins to fix her arm and elbow). She's back home now recovering from her injuries (Thank You LORD). My younger brother almost cut his finger off with a saw. He had to had surgury to repair his finger (Thank You LORD Again). So, the last week and half has been a rough road for my family.

Dec 1 (Saturday), and Dec 2 (Sunday), I got to work on the stove. Saturday- I worked on the stove for about 16 hours (7am-11pm). Sunday-after we got home from church, I worked on it for about four hours. I've pretty much have the stove itself finished. I just have to drill a hole for the oil line going into the intake pipe. I still need to cut a hole for the exhaust pipe. But that wont take very long to do. Finishing the stove itself is were I wanted to get this weekend. As of right now, I'm not sure if I want the exhaust pipe to exit my shop through the roof or the side wall. Also, I'm not sure were I'm going to put the stove at. Right now, I'm just thinking about the best possible place to save space since my shop is only 30x40 (1200 sqft). I have an idea were I want it at, but I have to decide then were the exhaust will go (roof or wall). If I go through the roof, I'm not sure how I will seal the pipe going through the sheet metal. The sheet metal is not flat, so sealing is a concern here. I'll probably just end up going out through the wall. That route will take allot of time. But, I know I will probably feal better taking that route.

As for the stove, I just wanted to finish it so I could use it before winter is over with. I ended up not putting in a door for cleaning the top barrel. I will do that this coming spring or summer. I also did not put in a peep hole so I could see how the flame is looking. If I need to look, I'll just open the door. As for the intake pipe, I did install one. You can see it in a few of the pictures. I added a plate so that I can control the amount of air entering the intake pipe. Next to do is work on the oil tank. So, that will be the next step that I will hopefully get done soon.
 

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   / Building a waste oil burning stove for my shop #48  
I love the cheesey door hinges! I'm going to use that idea the next chance I get.

Are you planning on running your fuel tube down the air intake?
 
   / Building a waste oil burning stove for my shop
  • Thread Starter
#49  
Iplayfarmer said:
I love the cheesey door hinges! I'm going to use that idea the next chance I get.

Are you planning on running your fuel tube down the air intake?
Those door hinges is what I had laying around the shop. They worked out rather well. Yes, the oil line will run down the air intake tube. I just have to drill a hole for the line to pass through the tube. I just have to decide the size of the oil line to use as well.
 
   / Building a waste oil burning stove for my shop #50  
LetsRoll, Without implying it won't work, why did you bring the air in at an angle without any downward transition? Have looked at the plans & hope to build one sometime. The author stated he has an oil supply on a hill behind his house to supply pressure for flow control. A couple of weeks ago I scored 2 -7 gallon paint pots with regulators & guages from the dumpster at work. Will incorporate into the design. Keep your progress coming. BTW, That's one beautiful stove. MikeD74T
 

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