As in "Why do I need it?" "The guy from brand x gasifier says their boiler will run just fine without it."
I don't have a lot of hope for this guy as I think he asked me after having already made up his mind and was just looking for some reinforcement. I pointed him to some of the European websites where the manufacturers stress what an important and integral pert storage plays in a wood burning system. I post this from Herlt's website but you can find similar admonition on practically any Euro manufacturer of wood boilers.
(You have to think a little bit due to the phraseology and translation from German to English but the message is there.) The italics are mine
Why do I need a big storage?
Oil- or gas boilers interrupt the feed of the fire material, when the programmed room temperature is reached. Wood gasifying is not that easy to stop. When the need is covered, the remaining energy will be diverted about the roof. (think dump zone) The stoker (homeowner) has to feed the boiler again, permanent work. (not desirable) To adapt the boiler power to the need, it is practical to reduce the revs per minute at the blower. Like this work HERLT boilers. The exhaust temperature will be programmed in relation to the quality of the chimney, lowest possible value by highest performance. (Chimney type and design dictate minimum flue temp) Because of this it is possible to achieve the best efficiency factor. What happens in case that the boiler power will be reduced because of a cutback of the fire? The exhaust temperature goes down under the minimum value, which is necessary to run the equipment in accordance with the regulations. (and the laws of physics) The consequences are expensive: tar, obstruction of the self-cleaning, chimney fire, poor exhaust values, a short boiler life etc. If the boiler would work with a low power, it would be very soon destroyed by acid, water and tar. Is it practical to buy a boiler, which can reach a efficiency factor of 91%, when it mostly only burns slowly with 25 %? ( Bullseye, Bingo, Nail on the Head) Use the comfort of a large storage for yourself and your boiler! Integrate a storage for a hot water requirement of 2-3 days, so your boiler can burn with optimal power and you can enjoy the breaks.
Once again I rest my case.![Smile :) :)](/talk/styles/default/xenforo/smileys/grin.gif)
I don't have a lot of hope for this guy as I think he asked me after having already made up his mind and was just looking for some reinforcement. I pointed him to some of the European websites where the manufacturers stress what an important and integral pert storage plays in a wood burning system. I post this from Herlt's website but you can find similar admonition on practically any Euro manufacturer of wood boilers.
(You have to think a little bit due to the phraseology and translation from German to English but the message is there.) The italics are mine
Why do I need a big storage?
Oil- or gas boilers interrupt the feed of the fire material, when the programmed room temperature is reached. Wood gasifying is not that easy to stop. When the need is covered, the remaining energy will be diverted about the roof. (think dump zone) The stoker (homeowner) has to feed the boiler again, permanent work. (not desirable) To adapt the boiler power to the need, it is practical to reduce the revs per minute at the blower. Like this work HERLT boilers. The exhaust temperature will be programmed in relation to the quality of the chimney, lowest possible value by highest performance. (Chimney type and design dictate minimum flue temp) Because of this it is possible to achieve the best efficiency factor. What happens in case that the boiler power will be reduced because of a cutback of the fire? The exhaust temperature goes down under the minimum value, which is necessary to run the equipment in accordance with the regulations. (and the laws of physics) The consequences are expensive: tar, obstruction of the self-cleaning, chimney fire, poor exhaust values, a short boiler life etc. If the boiler would work with a low power, it would be very soon destroyed by acid, water and tar. Is it practical to buy a boiler, which can reach a efficiency factor of 91%, when it mostly only burns slowly with 25 %? ( Bullseye, Bingo, Nail on the Head) Use the comfort of a large storage for yourself and your boiler! Integrate a storage for a hot water requirement of 2-3 days, so your boiler can burn with optimal power and you can enjoy the breaks.
Once again I rest my case.
![Smile :) :)](/talk/styles/default/xenforo/smileys/grin.gif)