| Dieser Datensatz ist Bestandteil der ÖKOBAUDAT. |
Process information
| Key Data Set Information | |
| Location | DE |
| Geographical representativeness description | The data set represents the country specific situation in Germany, focusing on the main technologies, the region specific characteristics and / or import statistics. |
| Reference year | 2018 |
| Name |
Base name
; Quantitative product or process properties
Facing brick; clay- based
|
| Use advice for data set | The data set represents a cradle to gate inventory. It can be used to characterise the supply chain situation of the respective commodity in a representative manner. Combination with individual unit processes using this commodity enables the generation of user-specific (product) LCAs. |
| Technical purpose of product or process | This product can be used in construction. |
| Classification number | 1.3.02 |
| Classification |
Class name
:
Hierarchy level
|
| General comment on data set | This data set has been modeled according to the European Standard EN 15804 for Sustainable Building. Results are depicted in modules that allow the structured expression of results over the entire life cycle. |
| Uncertainty margins | 20 |
| Description | Product system depicted except for a few missing processes / flows. Technological, temporal and geographic representativeness partly given. |
| Copyright | Yes |
| Owner of data set | |
| Quantitative reference | |
| Reference flow(s) | |
| Time representativeness | |
| Data set valid until | 2022 |
| Time representativeness description | Annual average |
| Technological representativeness | |
| Technology description including background system | Bricks are made of clay in. The production steps are as follows: Clay is extracted by open cut mining. The wet material is extracted by excavators and unwanted strata (gravel, chalk, etc.) are removed. The clay is mechanically processed to get the desired properties for molding. The mechanical processing occurs by using different mills and rollers, water is added to the already moist clay to improve the molding properties. The wet processed clay can be stored in silos to achieve deflocculation and homogenization. When the clay has the desired consistence, it is formed into the desired shape with an extruder machine or mold boxes. Before the firing process, as much moisture has to me removed from the clay as possible, otherwise, the clay would explode in the furnace. Drying occurs by heating the clay to about 80- 120°C, drying time is about 18- 40h.When the clay is dry enough, it is put in a furnace for burning it. The furnace temperature is about 900- 1200°C. At those high temperatures, sintering processes take place making the clay shrink and the rest of the moisture disappears. The bricks are then ready for being packaged and sold. Background system: Electricity: Electricity is modelled according to the individual country-specific situations. The country-specific modelling is achieved on multiple levels. Firstly, individual energy carrier specific power plants and plants for renewable energy sources are modelled according to the current national electricity grid mix. Modelling the electricity consumption mix includes transmission / distribution losses and the own use by energy producers (own consumption of power plants and "other" own consumption e.g. due to pumped storage hydro power etc.), as well as imported electricity. Secondly, the national emission and efficiency standards of the power plants are modelled as well as the share of electricity plants and combined heat and power plants (CHP). Thirdly, the country-specific energy carrier supply (share of imports and / or domestic supply) including the country-specific energy carrier properties (e.g. element and energy content) are accounted for. Fourthly, the exploration, mining/production, processing and transport processes of the energy carrier supply chains are modelled according to the specific situation of each electricity producing country. The different production and processing techniques (emissions and efficiencies) in the different energy producing countries are considered, e.g. different crude oil production technologies or different flaring rates at the oil platforms. Thermal energy, process steam: The thermal energy and process steam supply is modelled according to the individual country-specific situation with regard to emission standards and considered energy carriers. The thermal energy and process steam are produced at heat plants. Efficiencies for thermal energy production are by definition 100% in relation to the corresponding energy carrier input. For process steam the efficiency ranges from 85%, 90% to 95%. The energy carriers used for the generation of thermal energy and process steam are modelled according to the specific import situation (see electricity above). Transports: All relevant and known transport processes are included. Ocean-going and inland ship transport as well as rail, truck and pipeline transport of bulk commodities are considered. Energy carriers: The energy carriers are modelled according to the specific supply situation (see electricity above). Refinery products: Diesel fuel, gasoline, technical gases, fuel oils, lubricants and residues such as bitumen are modelled with a parameterised country-specific refinery model. The refinery model represents the current national standard in refining techniques (e.g. emission level, internal energy consumption, etc.) as well as the individual country-specific product output spectrum, which can be quite different from country to country. The supply of crude oil is modelled, again, according to the country-specific situation with the respective properties of the resources. |
| Flow diagram(s) or picture(s) | |
Modelling and validation
Administrative information
Environmental indicators