Automatic and Noninvasive Indoor Air Quality Control in HVAC Systems

Indoor Air Quality Monitoring and Control

Review of research on air-conditioning systems and indoor air quality control for human health

With the improvement of standard of living, air-conditioning has widely been applied. However, health problems associated with air-conditioning systems and indoor air quality appear more frequently. In this paper, recent research is reviewed on air-conditioning systems and indoor air quality control for human health. The problems in the existing research are summarized. A further study is sugge...

Methods for Indoor Air Disinfection and Purification from Airborne Pathogens for Application in Hvac Systems

The present paper is a review on methods and technologies for air cleaning from micro organisms and viruses, which are applicable with the present HVAC practices. The advantages and the drawbacks of air dilution, filtration (HEPA, ULPA), ultraviolet germicidal irradiation (UVGI), photocatalytic oxidation (PCO), plasmacluster ions and other technologies for air disinfection and purification is c...

Automobile Hvac Systems: Air Flow, Leakage and Their Effects on In-vehicle Air Quality

We have sought to accurately quantify automobile HVAC air flow rates in four passenger vehicles, under a range of different ventilation settings and speeds. We used Sulphur Hexafluoride (SF6) as a tracer gas, coupled with a portable doser/sampler system to quantify flow rates and leakage. Results of this work indicate a linear increase in HVAC air flow rate with increasing vehicle speed for all...

Indoor Air Quality

The issues of indoor air quality are complex and can be directly influenced by a number of system and building parameters. There are no universal solutions for every problem since there are numerous potential contaminant sources. They may originate from indoors and have a direct impact on indoor environmental quality, or they may originate from outdoors and be transferred by a mechanical or nat...