The next generation of mod con burners will

Constantin

... is related to calculus, though it's best explained within the context of a control logic class. In my school, said class had a pre-requisite for calculus up through differential equations (i.e. about 2 years worth of calculus) to give the student a background in laPlace transformations (which are very useful for classic PID modelling).

That said, any good textbook on control logic should explain the elegant math and logic behind PID control well. Couple that with a software package like Simulink to practice, and you should be good to go. I learned more about laPlace transformations in one lecture of control logic than I had in the entire semester of DiffyQ. That was the difference between the hands-on engineering department, and the ethereal theoretical approach of the math department.

hot_rod

be sporting

this clever system

www.ebmpapst.com/index/sid/5ECF78C2-2882-44B1-A0BF-134551AA9A63/nid/646E56A5-9161-4C36-BF67-9CE9EA72051C/b267fee20e10457ea2d8aa9dc578ba99.asp?gui_lang=EN

I spoke with these folks at AHR recently about this valve that can sense and adjust to changing gas quality and external conditions. Adjusting automatically to NG, liquid gas, biogas, or hydrogen enhanced gas.

And 10- 1 turndown really excites me.

I know HTP has been working with EBM, always on the cutting, sometimes bleeding edge.

hot rod

bob_50

Long URL

Wow, to cut and paste that URL I had to replace the bearings in the mouse twice. The Lambda technology sounds like a good deal. I think Saab used that idea to control their fuel injection back in the late 80's. You sure are a busy guy. Imagine my surprise when I saw a hover-craft with your name on it in Pueblo,CO.

Derheatmeister

About time! How about self adjusting air/gas mixture for the guys out there that are to cheap to buy a combustion analyzer.? or is this part of this? HM

Derheatmeister

Just checked out that site and it seams to self adjust for that too.!

Paul Rohrs_7

Now that's.........

A flux capacitor if I have ever seen one.

Very intriguing. If it could also be harnessed for DASBG (Day After Super Bowl Gas) then I think we would actually have something.

Paul

Derheatmeister

DASBG/DAS-GAS

Coming from landshut Germany it burns Biogas too, Or as the Germans would say :Das gas(stinkygas)Or Arschluft.HM.

scott markle_2

Car talk

The carburetor on my old cvcc (compound vortex controlled combustion) Civic had a mechanism they called a lambda linkage. Boy that carb was one complicated device. By the time honda moved to fuel injection those carbs had become incredibly tangled with vacuum hoses. Pre digital, era of complex analog controls.

Bosh made the original fuel injection systems for Saab and Volvo's. I believe Volvo's of a certain vintage had a lambda symbol displayed on the front grill. It seems that heating combustion is moving towards the sort of control refinement that emission regulations forced the automotive industry towards decades ago.

ChasMan

Oil

Id be happy with 2 stage on Oil.. I feel like I am burning dinasour blood inside of a cast iron dinasour.

Mike T., Swampeast MO

WOW! 10 to 1 turndown!

Uni R_2

IBC 10:1

IBC Technologies claims to have a 15-150 MBH mod con boiler.

http://www.ibcboiler.com/

Constantin

Hey Hot Rod...

... isn't this the same system that the Vitodens 300 burner already has? That is, no need to adjust for NG vs. propane?

fatty_2

i have some understanding of modulating boilers - what does a 10:1 turndown mean?

scott markle_2

Dinasour blood can be hazardous to your health

I like your Dinosaur turn of phrase.

The german vito's have something they call "lambda pro logic".

Anyone want to take a stab at explaining what the mathematical term means and how that relates to the self-adjusting properties of these systems that refer to it.

Also any experience with an outfit called the Teaching Company. They do recorded college lectures I was curious about Calculus. The terms derivative and integral got my attention, as in PDI

Calculus DVD: http://www.teach12.com/ttcx/coursedesclong2.aspx?cid=177&pc=Professor191

Brad White_185

10:1 Turndown

In heating, 10:1 turndown means that you can modulate down to 10 percent of maximum input.

A 100 MBH input (say 95% efficient or 95 MBH output) will get you down to 10 MBH input and 9.5 MBH output.

In other parts of life, if you ask eleven women to go home with you and only one says, "Yes", that too is a 10:1 turndown.

fatty_2

ah. so it, like the one kind lady, will have the opportunity to completely stop its cycling?

JJ_4

Flashback

Your reference to DiffyQ threw me into a flashback of a bad trip! I did get a "B", but after much confusion and even more studying. Comes down to it, my controls classes at Barber-Coleman put things all together.

Mark_46

Scott has it exactly right. This technology is not new by any stretch. Automotive fuel systems (and probably others) have been using this for decades for emission purposes driven by more stringent emission regulations.

O2 sensors (the device used to measure exhaust gas O2 levels) mounted in the exhaust pipe monitor the oxygen content of the exhaust for purposes of short and long term fuel trim. There are also upstream and downstream sensors. The downstream sensors measure the efficiency of the exhaust catalysts.

Primary fuel ratios (rather than trim) are controlled by other inputs such as throttle position and rpm sensors, for example. These would be equivelant to an ODR sensor.

This would be great technology to add to space heating systems. I say embrace it so we can get out of Iraq ).