Semco
Packaged Energy Recovery Systems and EXCLU-SIEVE® 3 Angstrom Molecular Sieve Heat Wheels. Equal Latent and Sensible Heat Transfer, Cross Contamination less than .04% Unitary Ventilators, Mid-sized Ventilation systems and Custom Air Handling units. PINNACLE® dual wheel DOAS units and Flexicool®
Chilled Beams for complete energy efficient building systems.
SEMCO offers a complete line of desiccant-based products and systems that recover energy, increase ventilation and control humidity. Using the patented EXCLU-SIEVE® technology, they provide the most cost effective solution to the dilemma facing designers as a result of ASHRAE 62; providing continuous ventilation while controlling humidity at any operating condition.
The EXCLU-SIEVE wheel utilizes a 3Å molecular sieve desiccant coating to limit the risk of desiccant cross-contamination which would otherwise cause a portion of the exhaust air pollutants to be transferred, along with the water vapor, to the fresh air stream. The 3Å molecular sieve material utilized by SEMCO was developed specifically for “selective adsorption” and has been successfully used for decades by the petrochemical industry. Other desiccants like silica gel and oxidized aluminum cannot provide selective adsorption. Molecular sieves are structurally stable, chemically inert and have a strong affinity for water vapor that produces a high rate of adsorption and superior latent transfer performance.
This EXCLU-SIEVE wheel is available in SEMCO’s Unitary Ventilators, Mid-sized Ventilation systems and Custom Air Handling units. The PINNACLE® dual wheel DOAS unit combined with Flexicool® Chilled Beams provide a complete solution for an energy efficient building system.


