by RIAZ » 28/10/08, 15:02
Come on, we make peace ...!
This KWB module may not be the easiest way. Adapting a module to an existing boiler introduces constraints that are probably greater than the advantages.
The STIRLING with 4 pistons is not necessarily the simplest config and more all that for 1 KW electric.
As soon as we talk about profitability we change domains. We leave that of the laws of physics with which these systems are first all categories combined, to go to the paths of politics, which are impenetrable!
If the current buy-back policy was consistent, this wood micro-cogeneration current, produced locally, with almost ZERO CO2, with almost 100% yield compared to primary energy, and, moreover, produced at peak times consumption, should be bought more expensive than photovoltaic current.
And there, to your calculators, I let you dream ....
That said, there is another economic dimension that should not be overlooked, although it is not as easy (if it is easier to put) in a spreadsheet as the notion of return on investment.
I am talking about the heritage value, the resale price of the house in 10 or 20 years.
Even houses that are 20 to 30 years old, even well built (for the time), will not pass into category A for energy efficiency, whatever the feasible efforts in the field of insulation.
Wood energy makes it possible to classify these houses directly in A for the CO2 criterion.
When we have stopped pantomimes with taxettes decided on the inspiration of the princes who govern us, and we will tax (make pay) CO2, this characteristic will have value ... literally.
To be continued ...
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In terms of the future, it is not to foresee it, but to enable it (Antoine de Saint Exupery)