Can you give me more information about pulsating gas boilers? What are the disadvantages?
This new type of boiler works a bit like an engine: instead of having, like in a conventional gas boiler, a burner similar to a torch, there is a bundle of spiral tubes bringing an air-gas mixture into a combustion chamber: this mixture ignites under the effect of a spark plug then by auto-combustion, enters the tubes of an exchanger causing a micro-combustion (more than 100 per second) by transferring the heat the coolant (water) of the heating system. The depression created by the micro-combustion generates a call of the gaseous mixture and the cycle begins again.
The main advantages of the system are a very high efficiency (100%) and a very low CO / CO2 emission. The water vapor contained in the gas mixture is discharged (in the form of condensate) by a simple PVC pipe. There is no need for a chimney, the connection being of the suction cup type. As there is no burner, the maintenance is simplified and is limited to the replacement of the candle. Moreover, the boiler produces all the domestic hot water by condensation.
Currently, to my knowledge, only the company AUER produces and distributes this type of boilers in versions 20 kW (about 3000 €) and 40 kW (about 4000 €);
All this pleads in favor of hardware. However, we do not have much perspective on its long-term reliability.
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