You have to change the boiler? Choose the biomass rather than gas. It may be economically advantageous as well as doing less harm to the climate. A small handbook to learn more about the advantages and weaknesses of the wood-burning plants, wood chips or pellets for home
Change boiler and allow natural gas to wood renewable energy today is not means signifies a return to the past. Just take a look at what the market offers, in fact, to understand that the biomass boilers on the market have little or nothing to envy , in terms of efficiency and ease of use, compared to gas models.
In fact, the wood-fired boilers and derivatives have certainly two points clear: first, that burning biomass does less harm to the environment than burning natural gas or LPG, as the CO2 emitted is the same as the plant has absorbed increasing. The second is that, once recovered the investment - considerably higher than a gas boiler - a biomass saves that continues over time unrelated to the evolution of the price of fossil fuels, whose price we know it is intended to increase. "It come quando si compera una stampante : si può spendere poco per la macchina, ma poi è il costo delle cartucce che incide” è l’efficace esempio di Marino Berton , il presidente di Aiel, l’associazione italiana energia del legno.
Ma quando vale la pena pensare ad un impianto biomassa e quali sono le tecnologie migliori? Innanzitutto bisogna distinguere le caldaie in base ai tre tipi di combustibile disponibili: legna tal quale, cippato (cioè pezzettini di legno ricavati da scarti di segherie o da potature) e pellet. Se state cercando una caldaia per un abitazione singola, a meno che is very large, exclude from the outset a plant chips : it requires a large silos and an extractor is useful only for systems 50 kW or more: it is the ideal for large centralized systems , such as those for a building, or district heating networks that connect multiple buildings. For
plants detached , especially if you have access to free or cheap fuel, an optimal solution are boilers wood quel : the most modern ones in gasification and flame arrives in reverse also yields above 90%, have an automatic ignition, are modular and interface seamlessly with a thermostat. The biggest limitation is that they require a minimum of work: full of wood, one or two a day, shall be made by hand, the ash is emptied every 2 to 3 days and - while some have an automatic mechanism that makes it for you - others require a weekly cleaning of heat exchangers. To have a biomass boiler, forget that the best solution is to pellet : the most modern are fully automated, simply empty the ash once a year and the rest is handled as a gas boiler.
But in all the houses you can install a biomass boiler? One thing to consider is the considerable space needed to store the fuel. They could also be required to work flues , although most modern biomass boilers do not require the barrel diameters greater than gas. Additional expenditure will be considered but is buffer : a tank of water that accumulates the heat, indispensable to the wood-fired boilers and also recommended for those pellets. Other recommended shopping: a control system, able to better coordinate the boiler with other sources such as solar panels
But agree as pellets and wood? The systems cost approximately 1.5 to 3 times more gas than their competitors. As long as they meet certain requirements (must have certification of the Class 3 EN 303 / 5, see the Handbook of ENEA in the Annex) - biomass boilers shall be entitled to state bonus of 55% on the machine and the work connected and, in many regions, have other special incentives. The investment for a home - which is almost always greater than 2-to 3 thousand euro - will be recovered through savings guaranteed in 3-6 years. A
concrete example we give Him thanks to estimates facts that we do from a known company in the field: one of their wood fired boilers in size suitable for single house (17 kW) the efficiency of 90% at a cost of 6,200 €. Adding the purchase of a buffer and a system of regulation and the costs of plant design and the total investment is € 13,991 (15,390 with VAT) and net 55% of the incentive becomes 6925. By saving the new wood boiler - estimating that the family consumed the first 4,500 liters of LPG per year, from a boiler efficiency of 90% - the figure, the company says, is recovered in 3.2 years: from that moment the gain will 2100 € per year .
In fact, the wood-fired boilers and derivatives have certainly two points clear: first, that burning biomass does less harm to the environment than burning natural gas or LPG, as the CO2 emitted is the same as the plant has absorbed increasing. The second is that, once recovered the investment - considerably higher than a gas boiler - a biomass saves that continues over time unrelated to the evolution of the price of fossil fuels, whose price we know it is intended to increase. "It come quando si compera una stampante : si può spendere poco per la macchina, ma poi è il costo delle cartucce che incide” è l’efficace esempio di Marino Berton , il presidente di Aiel, l’associazione italiana energia del legno.
Ma quando vale la pena pensare ad un impianto biomassa e quali sono le tecnologie migliori? Innanzitutto bisogna distinguere le caldaie in base ai tre tipi di combustibile disponibili: legna tal quale, cippato (cioè pezzettini di legno ricavati da scarti di segherie o da potature) e pellet. Se state cercando una caldaia per un abitazione singola, a meno che is very large, exclude from the outset a plant chips : it requires a large silos and an extractor is useful only for systems 50 kW or more: it is the ideal for large centralized systems , such as those for a building, or district heating networks that connect multiple buildings. For
plants detached , especially if you have access to free or cheap fuel, an optimal solution are boilers wood quel : the most modern ones in gasification and flame arrives in reverse also yields above 90%, have an automatic ignition, are modular and interface seamlessly with a thermostat. The biggest limitation is that they require a minimum of work: full of wood, one or two a day, shall be made by hand, the ash is emptied every 2 to 3 days and - while some have an automatic mechanism that makes it for you - others require a weekly cleaning of heat exchangers. To have a biomass boiler, forget that the best solution is to pellet : the most modern are fully automated, simply empty the ash once a year and the rest is handled as a gas boiler.
But in all the houses you can install a biomass boiler? One thing to consider is the considerable space needed to store the fuel. They could also be required to work flues , although most modern biomass boilers do not require the barrel diameters greater than gas. Additional expenditure will be considered but is buffer : a tank of water that accumulates the heat, indispensable to the wood-fired boilers and also recommended for those pellets. Other recommended shopping: a control system, able to better coordinate the boiler with other sources such as solar panels
But agree as pellets and wood? The systems cost approximately 1.5 to 3 times more gas than their competitors. As long as they meet certain requirements (must have certification of the Class 3 EN 303 / 5, see the Handbook of ENEA in the Annex) - biomass boilers shall be entitled to state bonus of 55% on the machine and the work connected and, in many regions, have other special incentives. The investment for a home - which is almost always greater than 2-to 3 thousand euro - will be recovered through savings guaranteed in 3-6 years. A
concrete example we give Him thanks to estimates facts that we do from a known company in the field: one of their wood fired boilers in size suitable for single house (17 kW) the efficiency of 90% at a cost of 6,200 €. Adding the purchase of a buffer and a system of regulation and the costs of plant design and the total investment is € 13,991 (15,390 with VAT) and net 55% of the incentive becomes 6925. By saving the new wood boiler - estimating that the family consumed the first 4,500 liters of LPG per year, from a boiler efficiency of 90% - the figure, the company says, is recovered in 3.2 years: from that moment the gain will 2100 € per year .
less profitable but equally beneficial in the case of a model of pellet boiler, always with efficiency of 90% in which case, again with buffer, control system and it'll work included about 16.500 €, that is, with the 8150 tax deduction, you rifarebbe spending 5 ½ years and from that moment on it would save € 1,400 a year.
Giulio Meneghello
Giulio Meneghello
November 5, 2009
QualEnergia
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