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Wood fired central heating > Gasification boilers

Gasification boilers

Here we have a totally different beast from a traditional boiler stove. These boilers are designed to be installed in an outbuilding or utility room. They have high heat outputs and nice big fireboxes to let you easily heat your house and domestic hot water with wood. Essentially you fill the big firebox up with logs and then walk away - the log gasifying boiler takes care of the rest. Gasifying boilers are batch burners - meaning that you load them right up, burn them hard, let them burn down, and then reload if needed. This is a very efficient way of burning wood which produces a low level of emissions/smoke too. The heat from the wood is often stored in a hot water heat accumulator tank for use as and when needed, although you can connect a gasification boiler directly to a standard heating system.

A log boiler used with an accumulator tank gives you the ability to decide when and how you want the heat in the house. Your programmer can be set to draw heat from the accumulator and warm your radiators for the hour before you wake up, turn them off in the day when you are out at work and then turn them back on an hour before you return from work.

The term gasifying means that the wood is being superheated and largely turned to wood gas and it is this that is burning. Modern stoves do this to some extent but often do not reach the high firebox temperatures of a log gasifier. The log gasifiers introduce a supply of air to the gases to effectively burn them off which is how they manage to achieve high efficiency ratings of over 80%.

All these wood gasification boilers have the robustness, reliability, and build quality we would look for in an appliance that will be used for many years to come. The Arikazan, Vigas and Orlan use a reverse combustion boiler which means they pull the hot flue gases downwards into a chamber below the fire and then up through boiler tubes. This gives higher efficiencies, higher heat outputs and reduced emissions.

The Arikazan gasifier boilers are different from the others in that they use a top fan to pull the hot gases through the stove, as opposed to other gasifier boilers that rely on a bottom fan to push the gas up through the stove. A top fan has a number of important advantages in that it puts the whole unit in negative pressure so there is no possibility of smoke leakage, no reliance on natural draught, no need for additional flue fans and no need for tall, large diameter flue systems.

Arikazan Ventum log gasification boilers

Arikazan log gasification boilers

Arikazan produce some of the strongest and most efficient log gasifier boilers on the market. Highly innovative, the latest Ventum log gasification models represent a new generation of utility boilers. While the more traditional Eastern European boilers rely on manually operated smoke by-pass controls and tall chimneys to achieve the required gasification, these boilers automatically move between loading and combustion mode.

The wood gasification models range from 20 kW up to 100 kW and all have efficiencies above 90%. There are also two self-lighting log and pellet combination boilers available. With this level of build quality and their advanced design, the Arikazan boilers are without doubt the best value log gasifiying boilers available today.

Visit our Arikazan log gasification boilers page, or click on the picture for more details

Vigas log boilers - vigas gasification boiler uk

Vigas gasification boilers

Vigas make log gasifying boilers with outputs from 25-80kW and efficiencies in excess of 80%. The Vigas uses one fan to supply combustion air to burn the wood gases and to regulate the output of the boiler.

Visit our Vigas gasification boilers page, or click on the picture for more details

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