Participation in the Interplastica proved a success

Participation in the Interplastica proved a success

gwk successful on the Russian market with temperature controllers, water chillers and cooling systems.

On the occasion of this years Interplastica exhibition in Moscow, gwk Gesellschaft Wärme Kältetechnik mbH, Kierspe, focused all its energy on the topic energy efficiency and also presented in addition to innovations in temperature control, highly efficient water chillers and central cooling systems.


Standard Temperature Control Systems with Interesting Innovations

Apart from the development of innovative system solutions gwk advanced the continuous expansion and modernisation of its range of single temperature control units and adapted those especially to the Russian market requirements.

One of these units is the teco cs-series, that has been upgraded by a touch-screen with new integrated functions. The units in standard execution, too, are now equipped with a flow meter and simultaneous indication of its set and actual values on a coloured display. The temperature profile is shown graphically according to the corresponding menu functions. By means of touching symbols on the start page, practical functions like limit comparator, leak stop operation etc. can be selected . The teco cs units can now be executed with the super fast VARAN interface. To increase the operational safety a service page shows maintenance intervals and advice in clear text indication.

Participation in the Interplastica proved a success


teco cs-units are designed for the operation with water as circulation medium and allow an use up to 95ºC/140°C/160°C. At the Interplastica especially the 95°C series attracted the customer’s interest. This series has been extended by three additional models with higher capacities. The new, cost-effective models are especially designed for larger consumers and dispose of heating capacities from 18 to 36 kW, cooling capacities from 50 to 120 kW and flow rates from 110 up to 170 l/min.

As some particular applications require temperature control units that are operated with oil as circulation medium, gwk also revised the teco to series up to 180°C as well as the teco tt series up to 300°C in order to correspond to the customers’ requirements.

New intelligent composite systems reduce the energy costs as well as the CO2-consumption

Trend in cooling technology is saving the utmost operating costs in the cold water production and use of waste heat for heating processes. The permanently increasing costs for fuel oil, gas and electric energy put the customer under pressure in a way, that more and more demands are made how many kilowatt hours have to be used for the processing of one kilogram of plastic material. Those boundary conditions can only be fulfilled by tailor-made composite systems with integrated energy-saving modules.

Of course, environmental aspects are taken into consideration here as well. So, for more than 15 years gwk has used the highly efficient refrigerant R 134a, that is chlorine-free and has no ozone depletion potential. The system pressures that are low in comparison to other refrigerants reduce signs of wear and increase the working life of the components in the refrigerant circuit. Recalculated and technically modified evaporators and condensers as well as energetically optimised screw compressors with improved control concept lead to another capacity improvement. So, the maximum energy efficiency of the complete system can be reached and a major contribution to the reduction of CO2-emissions is made.

New energy-saving modules are efficient cost-cutters

The hermeticool cooling system uses the differences of night and day temperatures as well as those of the seasons in order to produce cold water for production facilities in a cost-effective manner. Here the running time of the energetically cost-intensive water chiller is reduced to a minimum. Sophisticated energy-saving modules to control the refrigerant flow and motor speed in dependence on the ambient temperature and load, increase the efficiency by 36 % in comparison to conventional systems. By means of the new gwk-motor management the actual power consumption of the fans is continuously monitored and adapted to the capacity demands via speed control, so that the lowest energy consumption is always attained. These new motors with a high efficiency rate in comparison to conventional technologies can be operated with an extremely low rotational speed, so that – in combination with the optional night time temperature reduction – a major decrease of the sound level can be achieved. The individual operating parameters of each motor can be stored and in case of an eventually required motor exchange,  be reintegrated in the  comfortable motor control system.
By means of different installations gwk shows, how operating costs can be reduced by 75 % compared with conventional cooling systems.


Integrated water treatment and use of waste heat guarantee high productivity while saving costs at the same time

The long-term efficiency of a temperature control and cooling system is guaranteed by a water treatment system that is adapted to the process temperatures and the materials used in the machine components that are in contact with water. In the interest of short cycle times and low energy input, the production of deposits that reduce the heat transfer in the temperature control channels is prevented by a central, compact water treatment system. In such a central, completely functioning cooling unit gwk presents the whole range of required components from latest filter technologies via dosing of chemicals up to a unit for the cleaning of calcified temperature control channels. For example gwk-energy recycling components are demonstrated by using the return water of the hydraulic cooling of the two injection moulding machines for heating purposes via under floor heating and heat exchangers.

By means of the shown innovations out of its whole programme of temperature controllers and cooling plants, gwk convinced the international professional visitors at the Interplastica 2011. For the managing director, Helmut Gries, the regular participation in this exhibition has proved a success. “It is worth to take part in the Interplastica even in times of crisis and to cultivate the good personnel contacts with the Russian customers”.

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