An Analysis of Integrated Ventilation Systems with Desiccant Wheels for Energy Conservation and IAQ Improvement in Commercial Buildings

Seong W. Lee (1), Xuejun Qian, Steven Garcia
Industrial and Systems Engineering Department
School of Engineering, Morgan State University
Baltimore, Maryland 21251,  U. S. A.


Ventilation systems are critical to heating or cooling spaces in commercial buildings. 2% of one fifth of all the energy produced in the U.S. is consumed by the commercial buildings’ ventilation systems.  However, the existing ventilation systems are needed to improve the energy efficiency and indoor air quality (IAQ) strategy.  The integrated ventilation technologies are demanding to reduce energy use and ensure IAQ and dissemination to market.  The Schaefer Engineering Library at Morgan State University was selected as a demonstration site with integrated ventilation strategies.  Different Software (Design Builder, Trace 700, etc.) and Design of Experiment (DOE) were used to model and analyse the UFAD and overhead variable air volume (VAV) ventilation systems. The annual energy simulation results indicated that integrated systems along with different source technologies could save more than 20% of energy and improve significant amount of IAQ.

Keywords: Ventilation; Overhead Variable Air Volume (OHVAV); Under Floor Air Distribution (UFAD); Desiccant Wheel; Energy Efficient; Indoor Air Quality (IAQ).

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