SOME EXAMPLES OF IMPROVED ENERGY EFFICIENCY
RESEARCH AND DEVELOPMENT WORK
OF SCHEITER Ges.mbH
FURTHER DEVELOPMENT HOT WATER CASCADE
PERFORMANCE CHANGE ADAPTATION
LOADING CONTROL, FILTER WALLS
The internals in the hot water cascade developed by Scheiter Ges.mbH Wärmetechnische Anlagen allow almost uniformly high efficiency with variable hot water quantities when heating up the hot water. These special internals are characterised by high levels of operational safety and long life since they do not utilise moving components. This is a significant advantage for hot water generation in hot water systems with fluctuating hot water return flow rates. This advantage can be utilised in most applications of hot water cascades.
For the heating of vulcanising presses and calanders with hot water proven and used many times over especially in the industry the hot water cascade for hot water generation was continuously improved and optimised based on mixed condensation using a direct exchanger as part of processing projects of a variety of sizes and requirements.
Detailed planning and design taking into account the following criteria are based on exact computer calculation to suit the application:
- Adaptation of performance through specially developed vessel internals for variable flow rates with almost uniform efficiency.
- Hot water storage for compensating consumption peaks.
- Containing of the expansion volume and pressure holding throughout the plant (therefore no additional pressure holding system required).
- Thermal deaeration (thereby saving of chemicals and less environmental pollution).
- Continuous filtration and cleaning of the circulated hot water through large filter wall arrangements (low maintenance costs especially with hot water contaminated through the process).
- Loading control to avoid steam consumption peaks to achieve continuous steam consumption.
- Hot water direct exchangers for operating temperatures of 103 °C to 250 °C are erected by Scheiter Ges.mbH in upright and horizontal design depending on local conditions.
FURTHER DEVELOPMENT OF VULCANISATION PRESSES FOR CAR TYRES
Scheiter Ges.mbH. Wärmetechnische Anlagen is continuously working on further development to achieve improved energy supply for tyre presses. Through this development work it was possible on the one hand to decisively improve the temperature accuracy and pressure accuracy for the vulcanisation process and, on the other hand, enable energy savings up to 60% compared with conventional media supply systems for tyre presses.
HOT WATER HEATING FOR THE MANUFACTURE OF CAR TYRES WITH PRESSURE BOOST IN BLADDERS OF VULCANISATION PRESSES
The pressure boost in the bladders of vulcanisation presses heated with hot water requires a design-protected auxiliary installation. This installation consists of a pressure vessel with control unit connected to the bladder. This serves to individually achieve best possible adaptation of the respective interior pressures of the bladder necessary for the individual presses. In addition to this it is possible to keep the pressure in the hot water system low so that the energy requirement for circulation pumps or pressure boosting pumps is kept low. The extraordinary advantage of this process consists in that the interior pressure in the bladder can be rapidly varied for every vulcanisation press with this additional installation. Manufacturing and operating costs for the hot water system are significantly reduced as a result.
AUSTRIAN CONSULTING AWARD 2000
FOR THE HANDED OVER PROJECT HEAT RECOVERY
The Jury awarded our project with a nomination for the Austrian Consulting Award 2000 due to the fact that the heat consumption associated with the production of automobile tyres can be decreased significantly in comparison with traditional production methods.
As a great deal of thermal energy (approximately 2 - 2.5 MWh / ton of tyres) is required for the production of tyres, the realisation of potential energy savings through heat recovery (with degrees of recovery up to 90%) is particularly interesting in the face of increasing energy prices.
The related reduction of exhaust vapours, waste heat and fresh water consumption play a significant role in reducing the load on the environment.
We were already able to successfully implement the system of the existing tyre factories. This system has great potential due to the fact that it can be installed in existing tyre factories.
The award for a nomination for the Austrian Consulting Award 2000 was presented to the Scheiter Ges.mbH. during an event by the Federal Minister for Economic Affairs and Labour, Dr. Martin Bartenstein.