Modern buildings are designed to be airtight and almost sealed. In these conditions, the internal air becomes stale, humid, unpleasant and polluted.
At the same time, the ventilation through the windows is ineffective, because the incoming air is not properly circulated and condensation and pollutions are likely to remain in some of the premises. In terms of financial aspect, the bigger part of the heat from the premise is lost in the atmoshpere through the open windows and energy consumption is raised.
All these items place the mechanical ventilation into a leading role for all types of buildings. And what is more - there will be for many years to come, so it is worth to find effective solution to deliver clean, fresh air and cut down the energy consumption and expenses ate the same time.
|Heat recovery ventilation is exceptionally profitable investment and has a pay-back period of approximately 1-3 years, depending on the running hours of the system and regional climate.|
TANGRA company has rich experience in design and production of HVAC systems and solutions. Well educated professionals and machines with highprecision guarantee the high quality of production.
|Double deck version AHU-REC is produced in 6 standard models for air volumes between 2500 and 25000 m3/h. It is possible to be produced units with different dimensions and bigger air volumes on request.|
Supporting construction of AHU-REC consists of special aluminium profiles and corners.
Side panels are made of galvanized metal sheets with powder coating and thermal- and sound insulation. The panel thickness is 25 mm or 50 mm depending on the typesize of the unit and its place of installation (indoor or outdoor). Service and maintenanve covers are designed as doors or as removable panels with reamers.
The sections of every particualr AHU-REC may vary depending on the project and may include:
Filter section with different class of filtration
Recuperative section with ceross-flow heat exchanger with efficiency up to 65%. Plate type heat exchangers REC-AL/ REC-AL+ are designed for secondary (recuperation) usage of heat/ cold of the exhaust air or gas from ventilation, air-conditioning, drying and technological systems.They work in temperature range from -20Ð¾ Ð¡ up to 90Ð¾ Ð¡.
By-pass with motorized damper
Mixing section with multiple leaf dampers
Thermal section with heating and/or cooling coils
Sound attenuation section
Control and automation system