- 5 questions about oil heating
- Fuel oil: what is the most effective renovation solution?
- Can oil be "green"?
- FOR HEATING ALONE
- SILENCE, HEATED!
- VERY GREEN
- HIGH PERFORMANCE
The current equipment to domestic fuel have evolved and know how to adapt to the needs. Robust and efficient, the recent models are less polluting and, contrary to popular belief, can also be an economical solution.
5 questions about oil heating
Responses from Mohamed Abdelmoumène, technical director of Oil Solutions Alliance (National Federating Organization for Promoting Efficient Heating Systems and Innovative Technologies with Domestic Fuel Oil)
Is domestic fuel still a relevant energy?
Despite many received ideas unfortunately stubborn, the domestic fuel solution remains fully relevant. Thus, at the price level, it is the second cheapest energy * at 9 cents / kWh, behind gas (7 cents / kWh), but far ahead of electricity (13 cents / kWh) and LPG (14 cents / kWh). cts / kWh).
In reality, this energy is perceived as expensive because of its price fluctuations due to its indexation on the price of oil: we therefore speak more about it.
Are the boilers really efficient?
This is still a misconception. Talking about boiler obsolescence at the technical level is inept. The technical solutions with domestic fuel, identical to those proposed by the gas, have evolved enormously and the replacement of an old boiler by a condensing boiler offers the same gains on the energy bill of a household. We start, as with gas, talking about microcogeneration and other very advanced solutions. The reason for these innovations is simply the presence of a very demanding and unavoidable regulatory context.
Indeed, not only thermal regulations (RT 2005 and 2012) have oriented the market towards demanding techniques, but we have been able to meet since 1992 other requirements concerning the performance of boilers, which will soon be further reinforced by the European Eco-Design Directive. The improvement of materials is inevitable, otherwise they would be doomed to disappear!
Is a high-performance boiler not oversized when improving insulation or in a well-insulated new home?
There will be no oversizing because the current equipment has evolved and can adapt to the needs. This is the case of the new modulating burners, which allow a condensing boiler of 18 kW to have an optimum efficiency even at 6 kW, and this in old housing as in new construction. We are in the process of experimenting in a house of 140 m2 equipped with a condensing oil boiler coupled with solar thermal. It must reach the level of the future label most demanding of RT 2012.
Its energy consumption is estimated between 300 and 500 l of fuel oil per year, for heating and hot water. It has nothing to do with the 1,500, 2,000 or even 3,000 l consumed in some old houses! On the other hand, new homes are moving further and further away from the center of the cities, at the rate of about 1 km per year. We also move away from energy distribution networks. Fuel storage is then more relevant than the development of a network...
Finally, today's oil-based technologies, combined with a thermodynamic or solar water heater for domestic hot water, are among the best solutions in RT 2012. They also value the boiler + radiator and / or floor loop. hot water heating.
* Source: Ministry of Ecology, Sustainable Development and Energy.
Fuel oil: what is the most effective renovation solution?
Alliance solutions fioul realized with the Costic * a guide on the renovation of the park of the individual houses, knowing that 75% of this park equipped with domestic boilers dates from before the first thermal regulation of 1975.
The most relevant solutions to implement in order to reach the BBC label were evaluated. It turns out that if you really want to reduce the energy bill, the most effective solution is to replace an old boiler with a condensing boiler and to insulate the roof attic. The range of this work package is between 9,000 and 12,000 €, with a return on investment of 5 to 6 years, excluding aid. It provides gains of 40 to 50% on the energy bill.
For the Costic, this is the first step towards a total renovation including the total insulation of the building. But here, the importance of the cost of the works (of the order of 20 000 to 30 000 €) makes them more difficult to amortize: the return on investment is then 10 years minimum.
* Scientific and Technical Committee of Climate Industries.
Domestic oil boilers are no longer the dinosaurs they were. They now combine performance, elegance and environmental protection.
The annual maintenance of the oil heater includes the cleaning and checking of the heating element, filters, ducts, burner and safety elements. The combustion must be regulated, with analysis of combustion and smoke.
Can oil be "green"?
Heating systems combining renewable energy and stored energy such as heating oil - called "hybrids" - offer very advantageous conditions in terms of performance to reduce the heating bill. Like automotive technologies, these hybrid systems are developing. They have become reliable and economically more affordable. Thus, the heating oil is perfectly associated with renewable energies and adapts to all technologies: solar, wood, low-power heat pumps, thermodynamic balloon.
These efficient and ecological solutions ensure good profitability. Several manufacturers now offer complete processes integrating for example a domestic oil condensing boiler with a combined solar system (SSC), that is to say producing both heating and domestic hot water or producing only domestic hot water (CESI). These "plug and play" type systems facilitate the installation and commissioning of the installation.
Other solutions rely on the complementarity between a condensing boiler and a small heat pump. The CAP works well in the mid-season. Its performance deteriorates when it is cold. The domestic oil boiler then takes over. This system uses the best of both technologies. When renewable energy is no longer able to supply the needs, the domestic fuel efficiently ensures the complementarity of heat production.
For a more economical installation and a better efficiency, the heating oil must be condensing, or even associated with a heat pump for a change of boiler or solar collectors for the production of DHW.
From 21.5 to 33.7 kW, this floor-standing condensing boiler with integrated oil burner for heating only can be equipped with a control panel that is either thermostatically controlled, or depending on the outdoor temperature per sensor, or depending on the outside temperature with room correction. "GTU", De Dietrich Thermal. Public price: € 4,540 excluding tax.
THE STRONG POINT: ideal for renovation, it is very compact with its reduced footprint (57 x 146 cm).
FOR HEATING ALONE
Offered in five models from 20 to 45 kW, this condensing oil boiler is designed for heating alone. It can be connected to a DHW tank. "WTC-OB", Weishaupt. Public price: € 6,750 excluding tax.
THE STRONG POINT: its two-stage burner and regulation that takes into account the outside temperature.
This heating oil condensing boiler is available in three power ratings from 19.3 to 28.9 kW. The two-stage compact burner adapts its power to heat requirements and ensures maximum energy efficiency. "Vitoladens 300-C", Viessmann. Public price: from 5 712 € HT.
THE STRONG POINT: its silent operation thanks to the built-in sound trap.
Designed for new and refurbishment, this type of oil-fired boilers from 12 to 35 kW combines very well with solar energy and is designed for all types of fuel oil. "A1 BO", Rotex. Public price: 4,150 € HT.
STRONG POINT: one of the models accepts a fuel whose biogenic content can reach 20%.
With a capacity of 22.3 or 30.5 kW, this condensing oil boiler is installed on the ground. It offers a yield up to 101.8% and can be associated with a balloon up to 120 liters. Olio Condens 3000 F, Bosch Thermotechnology. Public price: € 4,457 excluding tax.
THE STRONG POINT: the integrated dashboard control allows to control two heating circuits.