Fuel or fuel produced from biomass (eg fuel alcohol).

Gas consisting mainly of a mixture of methane and carbon dioxide and from anaerobic fermentation (called methane fermentation) of the biomass. The methane obtained after separation is called biomethane. Fertilizer gas, hog manure gas, swamp gas and public sewage gas are examples of natural forms of (more or less controlled and exploited) biogas production.

Organic material, non-fossil, of biological origin, partially usable as an energy resource.

Organic material, non-fossil, of biological origin, partially usable as an energy resource. The biomass consumed at the Mortágua plant includes forest residues and pine / eucalyptus bark.

The exploitation of biomass for energy purposes is based both on artisanal processes using the raw materials available locally, as well as on industrial or semi-industrial methods oriented towards a significant production of products that replace fossil fuels. Their use should take into account the concern of protecting the environment, the use of local resources, economies of classical energy, diversification of production, etc. Their vocabulary reflects the diversity of these concerns, being identical to that used by ecologists, economists, agronomists, etc., sometimes resulting in a certain imprecision. Similarly, the classifications of biomass differ according to the point of view under which they are envisaged: that of the economy or that of agronomy, for example. That is why we have limited ourselves here to resume only the most current vocabulary, without hierarchy concerns or harmonization between the specific terms used.

Element of a turbine that turns, under the action of the wind, the kinetic energy of the current of air in mechanical energy in the axis of the turbine.

Set of homologous panels of the same series of layers

Width determined by the clearing machine and the scanning technique, resulting from a clearing path of the machine. Is the difference between the corresponding edges of the slopes on the holding level. The front-forward block width is the same as the preceding width.

Corresponds to the amount of heat required to raise the temperature from a pound * of 1 pound * of water from 39.2 ° F to 40.2 ° F.
1 Btu = 1 055.06 J.
* English unit of weight.

Voltage between phases whose effective value is equal to or less than 1 kV.

Supplies or deliveries in BT for contracted powers of over 41.4 kVA.

Supplies or deliveries in BT for contracted powers of 41,4 kVA or less. Includes supplies for Public Lighting (IP).

Generic term designating a wood-processing plant for wood charcoal, regardless of its shape, materials used and its yield. This term may include equipment such as: cesspools, ovens, etc.

Fuel quantities supplied to seagoing vessels, irrespective of their nationality and category. Note: It does not include either the quantities supplied for internal transport by water or cabotage, nor those supplied to air traffic, even internationally.

Deposit of intermediate coal between the different types of transport, in which the walls are totally or partially formed by natural slopes.

Net amount of sales and services rendered (including compensatory allowances) relating to the normal activities of the entities, consequently after reductions in sales and not including neither value added tax nor other taxes directly related to sales and services rendered. In practice, it corresponds to the sum of accounts 71 and 72 of the Official Accounting Plan.

Separation of a product to be treated according to the gauges by means of one or a stream of air or water (see Classified coal).

Calorie is the amount of heat needed to raise the temperature of one gram of water from 14.5 ° C to 15.5 ° C at normal atmospheric pressure (101 325 Pa). Calcium = 4, 1855 J. [1 cal IT = 4, 1868 J].

Accounting for all forms of energy on the basis of its strict calorific power. Note: The calorific value, defined by the amount of heat developed by the complete combustion of a fuel unit, only applies, in principle, to fuels. However, by the assimilation, the notion of calorific power can be extended, in the case of electricity, to the heat dissipated by Joule effect.

For other forms of energy, in addition to fuel and electricity, the conventions are not yet truly standardized. However, the fact that these energies have so far represented only a minor part of the balance sheets justifies that the differences in the agreements adopted have not had a significant impact. For combustible products, the following are considered: upper calorific value (PCS) and lower calorific value (ICP).