i have a VistaFlame VF-55. This is a clone of the Enviro M55.Curse, what stove are you using?
i have a VistaFlame VF-55. This is a clone of the Enviro M55.Curse, what stove are you using?
I've never seen a pellet my stove wouldn't burn and I've burned some bad ones. And like Imacman said, ash isn't an issue. Anyone who complains about ash should try a stove without an ash pan. But the whole argument about hot vs. not hot pellets are hard for a Harman owner to appreciate because the stove automatically compensates for it unlike fixed feed rate stoves. The difference is in the usage, and that would be very difficult to impossible to measure. The reason we're all on this forum is because we chose to burn pellets to save money. So people need to do whatever they think is necessary to accomplish that. I won't criticise anyone for the choices they make.
Just for giggles, Heres an Example: MWP($209/ton) vs Vermonts($285/ton)
79.85 lbs. MWP lasted 27.8 hours= 2.87 pounds per hour @ $0.1045 per pound = $0.30 per hour
81.44 lbs. Vermonts lasted 27.62 hours= 2.94 pounds per hour @ $0.1425 per pound = $0.42 per hr.
My testing was done with the same feed rate. Vermonts were a bit hotter so I could reduce the feed rate a tick. They would use less per hour if I evened out the temp as close as possible..
Ash is the first thing they see(really the only thing). So many complain. Heat is what I keep the closest eye on then how long they last. Usage can be deciphered. Just takes a bit of math. I put an hour meter on my stove, But you can just note the time you put it in the hopper. see how long it lasts. If your Harman truly gives the same temp no mater the pellet. Time will tell which is the best deal. Trouble starts when you try to figure in the dollar factor. Easy if the brands your sorting through cost the same.
Once you figure the pounds per hour. Multiply that by the dollar amount per pound. You should be able to get what your stove cost per hour to burn for each brand of fuel.....
Just for giggles, Heres an Example: MWP($209/ton) vs Vermonts($285/ton)
79.85 lbs. MWP lasted 27.8 hours= 2.87 pounds per hour @ $0.1045 per pound = $0.30 per hour
81.44 lbs. Vermonts lasted 27.62 hours= 2.94 pounds perhour @ $0.1425 per pound = $0.42 per hr.
My testing was done with the same feed rate. Vermonts were a bit hotter so I could reduce the feed rate a tick. They would use less per hour if I evened out the temp as close as possible..
This post got me thinking. This morning I shutdown the beast and scooped out the Northeast pellets. Refilled with Vermonts after weighing the bag. Started the stove and tweaked the feed and trim settings to get the Vermonts to burn close to 245 and ran it for a few hours. Shutdown and scooped out the remaining pellets and figured out how much it used per hour. Turns out it only used 2.72 lbs/hr to get about the same temp as the MWP.
2.72 pounds per hour @ $0.1425 per pound = $0.39 per hour.
What did it prove? IDK, But for a few hours I wasn't bored!
I think you just proved that even though Vermonts contain 5% more heat (2.72 vs 2.87), the MWPs are about 25% cheaper (30 vs 39 cents per hour at your prices) to get equal heat out of your stove.
This is assuming your 245F was the convection air, and the convection air intake temp and blower rates were the same on the two runs. You set up the stove/pellet for equal heat rates (the temperature increase thru the heat exchanger). By measuring time, you got a direct comparison of the 2 pellet brands' heat content.
Yes, convection temp is what I am going by. Air intake temps were not measured(using an OAK with cold winter air for both tests). Combustion blower speed was the same and so was the damper(set with a magnehelic gauge). Convection blower speed was also the same. I used the feed trim to adjust the amount of fuel to equal the temp reading. Tried to keep things as close as possible. But definitely not a lab test by any means! Shear boredom tis all!
Except for the question of the OAK intake and convection intake (room) temperatures, that was about as good a test as we're going to see short of a dedicated lab environment. Nice job!
I have to add that the real brain for my stove is the thermostat. I went back to my normal burn settings(feed rate) to get more heat rise per hour. I let the stove burn hotter and the stat controls the house temps. Stove will run shorter with a hotter pellet, And less waiting for the house to warm up. So if I had some MWP I would need to do the opposite side and raise their feedrate to get the house warmer quicker. If I had some MWP I would do the a test on what their consumption was at a higher feed rate to equal the Vermonts.
To me the stat is the equalizer. What ever the BTU of the pellet it just runs the stove longenough to warm the shack. I'd need to do some other things to figure if the stat is evening up the actual score. One of these days I'll get a data logger. It would allow the 2 bag runs to be graphed and timed. Insted of the actual stove burning time. I could also see just how long they actually last in total hours(hard to explain). Just seems I'm missing something.
I guess what I am asking is would either pellet have an advantage in heat days? Example: Stove maybe running for 27 hrs, But is it lasting 3 days while doing that?
Looks like you got plenty of feedback.I just bought a ton of North American Pellets. Has anybody used these or have any feedback to quality?
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