Waerag

Paper machine hoods & ventilation systems

	Products/application areas - closed/open hoods - pocket ventilation & web stabilizer boxes - heat recovery units - wet / hot air exhaust systems - high efficiency hoods for Yankee dryers - building ventilation - warm-water circulation systems - process controls
	Closed/open hoods Waerag hoods enable: - to operate at high dew points - an efficient heat recovery - an increase in production - a saving in energy requirements - an improvement in working conditions Main features of the Waerag hoods: - simple design - minimum leakages - elimination of cold zones inside dryer section - sound insulation of the dryer section - a direct and adjustable exhaust system - long life and high reliability		Waerag pocket ventilation & web stabilizer boxes enable: - an increase in water evaporation - an improvement of umid cross-profile - a reduction in energy consumption thru the re-use of flash steam and hot condensate Supply program: - pocket ventilation boxes with zone control as option - stabilizer boxes for Uno-run sections - stabilizer boxes type "Duo side" - press run boxes
	Heat recovery units Main features of the Waerag HR units: - execution to obtain the maximum of heat transfer efficiency - low operating and maintenance costs - corrosion-resistant - easy to be installed - fast pay-back		Waerag air to air heat exchanger: - heating surface in a nest of tubes made of AISI 316Ti - water-tight - self-supporting construction for easy installation
	Waerag air-to-water heat exchanger indirect: - heating surface in a nest of tubes made of AISI 316Ti - can be set-up on top or next to HR air-air - used to warm water in the circuits feeding ventilation units and to produce process water with no fibers		Waerag air-to-water heat exchanger direct: - made entirely in stainless steel - can be set-up on top or next to HR air-air - used to warm process water containing fibers
	Wet-hot air exhaust systems: - corrosion-resistant and maintenance free design - mist removal in PM wet end sections - hot air exhaust systems in coater sections		High efficiency hood For the production of tissue grades Main features: - double body, in corten or AISI steel - heating by gas or steam - working temperature: over 500°C - special design to compensate thermal expansion - zone profile control
	Building ventilation - ventilation of PM building - ventilation of stock preparation rooms, etc.		Warm-water circulation system Waerag warm-water circulation system for: - warm water supply to the ventilation units, including piping, pumping stations, pressure control, etc.
	Process controls The Waerag control units guarantee: - a trouble-free control, monitoring of the system as well as an efficient operation for more informations: www.waerag.com