Condenser Solid Fuel Boiler

Dummy

Hi there,

I have been reading up on Condenser Oil Boiler and love the idea, but am wondering of anyone has ever heard of a condenser solid fuel boiler.

I have searched around the web without any joy, but that does not necessarily mean they do not exist. Gases are produced from the burning of solid fuels, that may be burned to produce more energy.

Has anyone come across these?


Regards,

D.

Stove Fan

Dummy wrote: »

Hi there,

I have been reading up on Condenser Oil Boiler and love the idea, but am wondering of anyone has ever heard of a condenser solid fuel boiler.

I have searched around the web without any joy, but that does not necessarily mean they do not exist. Gases are produced from the burning of solid fuels, that may be burned to produce more energy.

Has anyone come across these?


Regards,

D.

Yes they exist:) What you are reffering to is a log or log/coal gasification boiler
See http://kotly.com/index.php?cPath=169_208
http://kotly.com/product_info.php?cPath=145&products_id=322

This thread is worth a read too. Got a good deal.
http://www.boards.ie/vbulletin/showthread.php?t=2055508301


There are many other makes too.

Stove fan:)

Jebs

I have seen no difference

PeteHeat

Hi,

I think there has been a bit of a misunderstanding a condensing boiler is different to a gasifying boiler.

I doubt that we will have solid fuel boilers with condensing mode available anytime soon possibly due to the cost of making a section of the boiler in stainless steel and the differences in flue gas temperatures from different types of solid fuels.

Wood Pellet, Oil and Gas give us fairly stable flue gas temperatures which allows the engineers to design a section of the boiler to extract the most energy possible from the flue gasses or products of combustion.

Grant Engineering (Irish Company) have developed the Spira wood pellet boiler that works in condensing mode very similar to their range of oil boilers, that is the closest I have seen to a condensing solid fuel boiler.

.

heinbloed

Any boiler can run in a condensing modus.

Solid fuel boilers as well.

It really depends on the competence of the employed heating engineer if the client gets what is desired.

@ the OP:

What sort of fuel do you have in mind and what output (kW) should the boiler have?

Dummy

Hi Heinbloed,

I am looking to burn smokeless coal.

Ideally if the the boiler had a hopper that would drop the coal would be fantastic.

In terms of KW, I have no idea. There are 20 rads in the house.


Rgds,

D.

heinbloed

Without knowing the output - difficult.

Any solid fuel boiler can run in a condensing modus, as said before.

There are specialist companies who produce and sell " flue gas heat exchangers "
which are installed between boiler and flue.

I have no English adress, only German/Swiss ones, sorry. Anyhow, if you know the type of boiler ( the technical data is important !) this company will build for you what you want, fully certified, TUeV and CE mark etc. :

http://www.te-waermetauscher.de/index.php

click onto "Waermetauscher fuer Festbrennstoffe", bottom left.

To order your individual flue gas heat exchanger go to

http://www.te-waermetauscher.de/Abgaswaermetauscher-fuer-Festbrennstoffe/Berechnung:::1_11.html

and mind

http://www.te-waermetauscher.de/Abgaswaermetauscher-fuer-Festbrennstoffe/Sonderanfertigungen:::1_65.html

where you can ask for a contact.

There are many more of these manufacturers out there.

Note that the "latent energy" in the flue gases of a coal combustion are relativly low, so a condensing modus might not be worth it financially.
If the coal is damp like timber (up to 20% moisture) it is propably worth it, but with dry coal - figure that out. A heating engineer will direct you through this (yellow/golden pages).

Good luck.

heinbloed

Dummy asks:

I am looking to burn smokeless coal.

Ideally if the the boiler had a hopper that would drop the coal would be fantastic.

In terms of KW, I have no idea. There are 20 rads in the house.

Hard to find a household size with an English text in the internet.

Here again Kotly from Poland makes a difference:

http://kotly.com/product_info.php?cPath=75_76&products_id=834&language=en

and a smaller one (17kW) here

http://kotly.com/product_info.php?cPath=145&products_id=3332

Our coal here - despite being mostly from Poland- comes usually in larger sizes. This boiler's feeder is designed for 5-25mm coal. Ask your coal trader if he could supply this type of 'granular' coal. It's the same type of coal, just differently graded.

For a closed loop system you'll need a safety system like this (or something like it):

http://kotly.com/product_info.php?products_id=367&language=de

and for a new build or major overhaul/renovation you'll have to increase the efficiency as well(building regulations!) with one of the heat exchanger devices shown in the links previously posted.
Maybe Kotly does them as well, ask them.

PS.
This is the DIY forum, but these types of heating systems aren't designed for the DIYer to install them. Contact a heating engineer to install the system and to sign responsible for his work.