EFFICIENT RETENTION OF THERMAL ENERGY
Thermal wheel heat exchanger

Thermal wheel heat exchangers function as regenerative heat recovery systems (WRG). They are suitable for use across the entire air flow rate range. With the benefit of their compact design and ability to transfer high heat recovery outputs, they are especially effective in higher air flow rate ranges. The rotors owe their universality to their special design, with the base material, installed depth, wave height and diameter all freely selectable. Energy recovery with or without moisture transfer depends on the base material chosen and its coating.

The condensation rotor comprises a rotor accumulator, which transfers the heat. The rotor is driven by a small motor via a belt. One half of the rotor is located in the extract air, and the other in the supply air. The accumulator is located in the extract air flow, and is warmed by this air in winter mode. With the rotor turning slowly around the centre axis, the thermal energy is returned to the fresh supply air, which is thus warmed.

• Efficiency of up to 85 %
• High transfer rate on a compact footprint
• Many applications due to the high level of flexibility
• Variable output control via rotation speed
• Summer bypass via rotor standstill
• Low pressure drop
• Self-cleaning effect due to mode of operation
• Continuous operation as no defrost bypass necessary

The rotor accumulator with its hygroscopic surface supports the transfer of both energy and moisture. The rotor is driven by a small motor via a belt. One half of the rotor is located in the extract air flow, and the other in the supply air flow. The accumulator is located in the extract air flow, and is warmed by this air in winter mode. At the same time, the rotor's hygroscopic surface absorbs the water vapour created. With the rotor turning slowly, the thermal energy and water vapour are returned to the cold, dry and fresh supply air.

• Efficiency of up to 85 %
• High transfer rate on a compact footprint
• Option for moisture transfer
• Many applications due to the high level of flexibility
• Variable output control via rotation speed
• Summer bypass via rotor standstill
• Low pressure drop
• Self-cleaning effect due to mode of operation
• Continuous operation, as no defrost bypass necessary

The rotor accumulator of the sorption rotor is hygroscopically coated, facilitating temperature and moisture transfer all year round. The rotor is driven by a small motor via a belt. One half of the rotor is located in the extract air flow, and the other in the supply air flow. The accumulator is located in the extract air flow, and is warmed in winter mode. At the same time, the hygroscopically coated base material absorbs the water vapour created. With the rotor turning slowly around the centre axis, the thermal energy and water vapour are returned to the cold, dry and fresh supply air. This process also works in reverse. The sorption rotor is ideally suited to this as well, even in summer mode. This mode of operation significantly reduces the amount of costly cooling energy needed.

• Efficiency of up to 85 %
• High transfer rate on a compact footprint
• Option for moisture transfer/dehumidification
• Many applications due to the high level of flexibility
• Variable output control via rotation speed
• Summer bypass via rotor standstill
• Cooling in summer mode
• Low pressure drop
• Self-cleaning effect due to mode of operation
• Continuous operation as no defrost bypass necessary