Glossary & Links
Combustible material which formed over millions of years as a result of partial decomposition and chemical conversion of plant remains with the exclusion of air (coalification). The coalification process results in a relative enrichment of carbon.
System to purify the cooled processed steam in the power plant.
Double Tank Tool
Wet chemicals purification system consisting of two small multi-functional process tanks (see Single Tank Tool).
Substances discharged to the environment (dust, gases, vapors, nitrogen oxide, sulfur oxides etc.) which arise from various processes (production, processing, combustion).
Consumption of primary and secondary energy sources at the end user (industry, transport sector, households and small consumers).
Primary energy sources available in the upper layer of the Earth's crust. Apart from the term "reserves" the terms "resources" and "deposits" are frequently used, although the understanding of these terms varies widely.
Energy reserves can more clearly be classified into
- geologically proven and probable deposits, and
- currently exploitable deposits (exploitable in terms of economic and technical feasibility).
Gases arising from the combustion of fuels, mainly consisting of carbon dioxide. Fuel gas normally contains pollutants, such as carbon dioxide, nitrogen oxide, sulfur dioxide, dust.
Fossil energy source
Energy source originating from primeval times, such as gas, oil, coal.
Collective term referring to coal, natural gas and petroleum; these materials were formed as a result of geologic processes from the remains of organic matter (plants and microbes).
In electric power generation: a machine that converts mechanical energy into electricity. A turbine or a motor sets an electromagnet (rotor) into rotation. Its rotating magnetic field induces an alternating current in the stator. The capacity of the generator is equivalent to the gross capacity of the power plant unit.
Solid residue from firing coal when melted by temperatures of over 1500 °C.
Coal which is normally hard and contains more than 80 % carbon. Depending on the degree of coalification various coal types are distinguished.
Independent Power Producer (IPP)
Energy generation without own (power) distribution network, which feeds the produced electricity to the network of the third parties and receives a consideration.
Nitrogen oxide quantities emitted to the environment.
Plant used to convert naturally occurring primary energy sources into electrical energy.
Primary energy sources
Energy sources which do not need to be converted prior to use, e.g. hard coal and lignite, petroleum, natural gas.
Secondary energy sources
Energy sources produced from primary energy sources, e.g.:
- Briquettes (coal-dust bricks)
- Fuel oils
- District heat
Sulfur dioxide quantities emitted to the environment.
Steam boiler / steam generator
Closed vessel or arrangement of tubes used to generate high-pressure steam.
Steam power plant
Plant used to generate electrical energy, which normally uses steam as working fluid for the thermal engine (turbine). The plant uses primary energy to generate steam whose heat energy in a thermal engine is converted into mechanical energy. A generator then converts the mechanical energy into electrical energy.
Equipment unit flown through by steam, used to convert the energy of the steam into rotational energy.
Tons coal equivalent (t.c.e.)
Unit of energy. 1 kg t.c.e. is equivalent to 7000 kcal or 29.300 kJ, the mean heating value of one kilogram of hard coal.