Energy & Environment

Environment

Maschinenfabrik Liezen und Gießerei is very concerned about using energy in a responsible way and about further increasing the internal awareness of this issue.   

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Energy Policy

For our company, using energy in a responsible way means to conserve ecological and economic resources; this is an important contribution to secure the successful and sustainable existence of the company.

The energy management system according to DIN EN ISO 50001 shall help Maschinenfabrik Liezen und Gießerei GesmbH to reduce the specific energy consumption in the long term and to increase the energy efficiency in a continuous process of improvement. It is ensured that the requirements of the energy management system are fulfilled, that relevant information is made available and that all energy-related laws relevant for our company are observed.

By means of this energy policy Maschinenfabrik Liezen und Gießerei Ges.m.b.H. commits itself to pursue these long-term aims:

  • Increasing transparency relating to energy consumption and the company energy flows
  • Reducing specific energy consumption
  • Raising the energy efficiency
  • Reducing specific impacts on the environment due to the use of energy, especially the amount of specific CO₂ emissions

Pursuing these energy policy objectives is encouraged by the Management; this encouragement also includes the provision of the necessary resources.

Furthermore, an energy team has been established as part of the energy management system whose task it is to obtain the operative objectives by implementing concrete measures. To obtain these objectives every single employee has to make a contribution and to co-operate, which is expected by the Management and promoted by internal communication.

Maschinenfabrik Liezen assures to consider the energy-relevant objectives in all sectors of daily business activities and in purchase decisions, to do its best to continually increase the energy efficiency, and to reduce the specific energy consumption as well as the specific CO₂ emissions in the long term


Projects form Enviromental Care

Pre-heating furnace for castings

Europäische Union - Investitionen in Wachstum & Beschäftigung. Österreich
This project is being co-financed by the European Fund for Regional Development with a contribution of € 18,656.00. For further information, please consult the website www.efre.gv.at

To weld castings, they need to be heated from the prevailing ambient temperature to a temperature of 150°C to 400°C, depending on the alloy. In the past this was carried out by means of natural gas burners in an open “pre-heating space”.

The environmental impact results from the significantly reduced radiation losses as the energy is precisely used for the castings.

Based on the potential analysis it can be deducted that the annual energy consumption may be reduced by 711.28 MWh thanks to the steps described. This means that every year some 137 tons of climate-relevant CO2 emissions can be avoided.

Heat recovery

Europäische Union - Investitionen in Wachstum & Beschäftigung. Österreich
This project is being co-financed by the European Fund for Regional Development with a contribution of € 144,932. For further information, please consult the website www.efre.gv.at

The project “Heat Recovery” was started to be able to feed valuable waste heat energy into the heating cycle again.

In four gas-powered heat treatment furnaces of the Foundry, castings are heated up to 1,000°C. At full power, the waste heat energy arising per year comes to 2,000 MWh. To be able to recover this heat a new heating pipe from the heat treatment to the power house, a new connecting pipe between power house and the Liezen District Heating, and four new heat recovery systems (heat exchangers) are being installed. Despite great technological challenges, these systems can be adapted in such a way that the expected savings potential mentioned below can be reached.

Due to a co-operation with the Liezen District Heating, we can either use the obtained heat directly on our premises for heating purposes or supply surplus heat directly to the district heating system (especially in summer).

Environmental effects
Based on the potential analysis it may be deducted that thanks to the steps described above the following results are to be expected: an annual reduction of energy consumption to the amount of 2,339.51 MWh as well as the utilisation of 720 MWh of waste heat by the Liezen District Heating. This means saving some 648.45 tons of climate-relevant CO2 emissions per year.

Hall Renovation - Government-awarded Climate Project

In the course of the climate protection programme klima:aktiv "energy-efficient companies", MFL makes a major contribution to reduce CO₂ emissions.

Thermal Renovation of Buildings

A side hall of the paint shop dating from the 1980s was completely thermally renovated. The roof was improved by a foil roof thus reaching a thermal transmittance value (U-value) of 0.25 W/m²K. A new front panel for the exterior wall further improved the thermal transmittance value (U-value) to 0.27 W/m²K. Additionally, windows with insulating glass (thermal transmittance value 1.1 W/m²K) and new high-speed gates (thermal transmittance value 0.25W/m²K) were mounted.

Heat Recovery

Using heat exchangers and condensing boilers results in energy savings of 770,000 kWh per year.

Energy Management System - EnMs

The MFL energy management system was certified in March 2015. The system contributes to protect the climate and to conserve resources.

Certificate

Energy Saving Projects 2014

Tabelle

Electric Arc Furnace

To ensure a better extraction of emissions in the foundry two arc furnaces were provided with an enclosure. Due to this measurement, the dust extraction can take place nearer to the source of emissions which makes it considerably more effective.

A filter system separates the pollution particles from the air which is then directed in a clean condition to the outside via a collector pipe in the roof.

Elektro-Lichtbogen-Ofen