centralized cooling plant

Energy-saving hermeticool cooling systems

gwk hermeticool cooling systems use 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 water chiller is reduced to a minimum.

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gwk motor management
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 installation examples gwk shows, how operating costs can be reduced by up to 85 % compared with conventional cooling systems.


hermeticool units can be used wherever the cooling water temperature is at least 5K above air temperature. The function of the system hermeticool is to transport heated water to the external free cooler where the heat is transferred to the ambient air by means of direct heat exchange.