Indoor Air Quality Control

Source there is a source of contamination or discomfort indoors, outdoors, or within the mechanical systems of the building. 

HVAC the HVAC system is not able to control existing air contaminants and ensure thermal comfort (temperature and humidity conditions that are comfortable for most occupants). 

Pathways one or more pollutant pathways connect the pollutant source to the occupants and a driving force exists to move pollutants along the pathway(s). Occupants building occupants are present. 

It is important to understand the role that each of these factors may play in order to prevent, investigate, and resolve and manage indoor air quality problems. 

Indoor air contaminants can originate within the building or be drawn in from outdoors. If contaminant sources are not controlled, problems can arise, even if the HVAC system is properly designed and well-maintained. Sources can be from outside the building from operating equipment, from human activities, and other or miscellaneous sources. Sources outside a building include contaminated outdoor air, emissions from nearby sources, soil gas, or moisture or standing water. 

---

The control and regulation of indoor air quality are influenced by individual property rights and a complicated mosaic of federal, state, and local government jurisdiction with conflicts, overlaps, and gaps in addressing these issues. Table 23-3 shows a large number of agencies and departments involved in indoor air quality control efforts at the federal level. 

Methods, technologies, and energy-efficient practices for indoor-air quality control... 

Cross [19] advocates a rational approach in the design process. He described in his book the seven steps procedure for the rational method for new design shown in Fig. 12.8-1 and listed in Table 12.8-1. The method covers every aspects of the design process from problem clarification to detailed design. It also facilitates better teamwork and enables better task subdivision. The project team employed this method to guide the design of the indoor air quality control appliance. 

The project team s main objective is to design an efficient indoor air quality control appliance that can achieve the most stringent IAQ standard using new and competitive catalyst and adsorbent technologies. The appliance must be... 

---