Operating temperature inside the vent?

[SmokeEater]

This question may be moot, but do any or have any of you guys out there measured the temperatures inside the operating pellet vent? I have a short piece of flue that's single walled and only 6 inches long on my pellet vent and have a magnetic flue thermometer on that section. When my Harmon PB105 is running at full output, I only get a reading of 200* on this thermometer. It is on a horizontal section and about 6 feet from the combustion fan. I haven't had any trouble since installation and have burned about 7 tons so far since last February. Just wondering if those numbers are in the "ball park" of where they should be.

 

[iceguy4]

Sounds about right to me...I can hold my hand in front of my exhaust when its burning...its an efficient stove

 

[Bioburner]

ESP controls exaust temp on our Harmans. I am running stainless out of stove up to the pellet venting and after 8 ft is down to around 175 taken with infared gauge.

 

[tjnamtiw]

Using a surface pyrometer on my Castile, I measure 160 degrees right at the exit of the combustion fan on Medium.

 

[rickwai]

flue gases r 250-475 usually

 

[SmokeEater]

Thanks to you, iceguy4, Bioburner, tjnamtiw, and rickwai, for your response. I was a little concerned with such low temps compared to the solid wood burners, knowing that the volatile gases will condense below 200* F. These pellet burners must combust all of those within the burn pot. Thanks again.

 

[Bioburner]

Hence the high burn efficiency, now the real trick is to capture that heat before it leaves the stove. Some may have a low exaust temp but blow alot of air out. I had 2 stoves side by side and there can be a major differance at what is put into the house with the same amount of fuel.