cleaning

In the residential sector, there are several indoor sources of pollutants related to activities such as cooking, cleaning and heating, besides those from occupants, building materials, finishing and furniture. Considering these sources, the kitchen appears as the space in the house that has the largest number of sources, with cooking being the most relevant source. In addition, meal preparation generates derivative processes related to cleaning utensils and the environment, in which detergents, air fresheners and other categories of cleaning products are used.

Regular maintenance, such as the cleaning of filters, is important for the efficient operation ofresidential ventilation systems. The main objective of this study is to investigate effect of regularmaintenance on fan energy use and ventilation performance by using a test dwelling employingbalanced ventilation system. Experimental tests were directed with simulating the decrease of the airflow rates on terminals. Without cleaning, SFP based on the net air flow rate can indicate by 2.7 times compared with cleaned system.

Gives two examples at an air force base of poor maintenance of equipment. In the first study a comprehensive base-wide steam trap maintenance program is described. In the second a measured evaluation from a typical office building is described. The aim in both was to assess the importance of proper operations and maintenance, aiming in turn to provide more efficient building HVAC operation, provide improved services to the building occupants, and reduce energy consumption and unscheduled equipment repair/replacement.

The effectiveness of individual commercially available portable indoor air cleaning units were tested for their removal of dust particulates, tobacco smoke particulates and vapour phase constituents, viable and total fungal spores, pollen, and gaseous contaminants, and formaldehyde. A clean air test chamber was used. The results presented represent initial use. It was found that HEPA and electrostatic precipitator system demonstrated the highest efficiency in relation to particulate contaminants, with electret filter systems close behind. Least effective were ionizers and ozone generators.

Moulds are a health concern. High levels of moulds in a building environment are to be avoided. Some species or high concentrations of mould are a serious health risk, and must be dealt with if we want to maintain healthy indoor environments. Gives New York City remediation guidelines, and lists methods to control mould growth: 1) Repair indoor and outdoor water leaks, 2) Clean and disinfect smooth surfaces, 3) Clean and dry other materials or remove them, 4) Discard porous contaminated materials, 5) Control moisture sources (e.g.