NEW ROBUR G SERIES
25.02.2009
New Robur G series
Condensing technology enters in the world of Gas Fired Unit Heaters offering higher efficiency and energy savings for human and environmental comfort thanks to the automatic modulation of the flame and ventilation.
Condensing system in Gas Fired Unit Heaters
Exhaust flues of the combustion process in a gas fired unit heater contain a lot of energy, that could be used for the heating of a fluid (water or air). In the traditional heating units the high heat of the flues is used to warm a fluid (water for boilers; air for cabinet heaters) through a suitable heat exchanger. The combustion flues contain not only the sensible energy, but also the latent energy as water vapour. Well-known, flues are not only hot, but also humid, with a sensible quantity of water vapour that could be favourably used.
In a condensing gas fired unit heater, the heat of the flues is given to the ambient ventilation thanks to the particular heat exchangers in which the flues have been cooled by the heated ventilation air.
The flue temperature decreases (sensible heat) maintaining in any case its water vapour. If the combustion flues become even cooler inside the heater, below to a certain temperature (roughly 60°C), the water vapour will condensate.
This operation is very useful from the energetic point of view because it gives to the distribution air also the heating of the latent heat produced by the condensation.
The heating of the water vapour, normally wasted through the exhaust flue pipe, will be used for free increasing the efficiency of the system and with low environmental impact.
Condensing permits nowadays to increase the efficiency of the gas fired air to air unit heaters, exploiting as better as possible the heat of the combustion.
Robur condensing gas fired unit heaters join high efficiencies comparable to the best condensing boilers, adding the famous plus offered by these products as the absence of intermediate fluid, low thermal inertia, no water plant and central heating.