Prewag AG System

The control parameters are time, temperature and the humidity of the air. Colt international decided to CoolStreams of the series BG 16 with continuous energy-saving EC fans. The air flow rate is maximum 16,000 cubic meters per second per unit. The three CoolStream equipment was distributed so that the entire hall room can be supplied with fresh air. Fresh Lakes without draughts In the upper Hall area of Prewag injection molding movable cranes.

That’s why Colt international installed a system horizontally arranged tissue tubes through which the fresh air into the Interior of the Hall above. Is round fabric hoses from the flame retardant synthetic fiber Trevira CS (fire class B1). A total of six such hoses were two installed, each asix metres in length per CoolStream device. To make sure that the cooled air also targeted flows in the workspaces at the bottom of the Hall at the Spitz casting machines, the hoses were perforated. The perforation was carried out according to a certain pattern: it brings to mind the cross-section of a fabric tube as the dial a watch, so was the tissue in the zones from three o’clock to five o’clock and seven o’clock to nine o’clock perforated so towards the floor. The effect: The fresh air is lowered like a carpet at the bottom of the Hall without causing draughts.

The air output speed is metres per second thanks to the perforations. The three Typhoon on the first of the Hall roof ensure that consumed and heated air occurs on their way out of the Hall into the open. This lightweight and compact exhaust fans feature high air performance in combination with low air resistance and a very low power consumption. Low operating costs as well the new air-ventilation system in practice works, could the Prewag AG in the second half of the summer 2011 determine. The new system went to an approx. one and a half month installation phase in July 2011 in operation. Even with outside temperatures of 31 degrees a temperature was maintained inside the Hall stable of comfortable 27 degrees. Draught appearances are about Windows, doors or gates”snow yesterday. Moreover, especially the staff forward. The Executive Board of Prewag AG is pleased to be extremely favourable operating costs for the new system: operation over 12 months that total annual cost about 1,100 euros for electricity and about 500 euros for water. It further advantage of the new system: in the transitional periods and in the winter period it – can be used without adiabatic cooling – to the ventilation and exhaust. Prospects who wants Prewag 2012 expand their operation. A new production hall is being planned. And today is clear: there is the adiabatic cooling system again CoolStream are used. Contact: Colt International GmbH Dirk Osterkamp Briener road 186 47533 Kleve Tel: 02821-9900 Web:


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