Air Handling Units with Heat Recovery TANGRA AHU REC
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TANGRA AHU-SD

Modern buildings become more and more tighten insulated. This makes the mechanical ventilation obligatory, in order to ensure the health and Traditionally, ventilation and air-conditioning equipment are the biggest energy consumers in buildings. This fact impose the use of heat recovery equipment that could reduce the running costs significantly. Depending of the type of recovery, those units have efficiency up to 80%. The need of additional heating and cooling is reduced and that is of high economical and environmental importance. Heat recovery ventilation is exceptionally profitable...

Product range TANGRA air handling units are manufactured in modules allowing easy assembly, installation and commissioning. The AHU SD series is offered in 9 standard models with air The double deck version AHU REC is produced in 6 models with air flow from 2500 to 25000m3/h. On request, it is possible to produce TANGRA AHUs for bigger air volumes and dimensions different than standard. Technical characteristics in accordance with - Casing deflection - Class D1 - Thermal transmittance - Class T2/T3 (M) - Casing leakage - Class L3 (M) - Filter leakage - Class F8 (M) - Flexibility due to...

Example: Air handling units with mixing section Possible configurations Example: Air handling units with intermeriate coolant The mentioned confugurations are typical. All air handling units are manufactured on customers request with standard or custom dimensions, depending on the project specifications.

Possible configurations Example: Air handling units with plate heat exchanger REC Example: Air handling units with regenerative heat exchanger ROT The mentioned confugurations are typical. All air handling units are manufactured on customers request with standard or custom dimensions, depending on the project specifications.

The basic construction of the unit consists of special aluminium profiles and aluminium corners. The panels are of the "sandwich"type, consisting of an outer and inner cover with an integrated inner thermal and sound insulation. The covers can be made of galvanized sheet steel with powder coating or of stainless steel. The thickness of the panels is 25 and 50 mm. TANGRA requirements for class T3 and T2 thermal transmittance. MULTIPLE LEAF DAMPER The leaf damper can be operated manually or automatically througn the use of an actuator directly connected to the temperature sensor. This way the...

COOLING SECTION HEATING SECTION Water cooling section - heat exchanger "water-air" made by copper tubes with aluminum lamellas (spacing between lamellas 2,3 mm). A condensation tray is built in below it. Section can be of four, six or eight rows. Water heat exchanger built of copper tubes with aluminum lamellas (minimal spacing between lamellas 2.1 mm). Section is equipped with a temperature sensor for frost protection. Electric heating section is also possible. DROP SEPARATOR Designed to capture and brings out condensation drops from the cooling section. Made of specialized profiles and...

Air-conditioning and ventilation installations are rarely used to the maximum of their capacity. Optimization of energy costs can be achieved by changing the volume of treated air according to the needs of buildings each moment. This can be realized through the use of frequency inverter and programmable controllers. Frequency Inverter Frequency inverter enables smooth speed control of rpm of three-phase motors. This gives the possibility to reduce operating costs by 25%. Protection class of the frequency inverter can be IP20 or IP66, and the control power of motors varies between 0.37 and...

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