Study On The Influence Of Natural Ventilation To Indoor Air Quality

The goal of our building is to make human, buildings nature and society develop compatible. Human should adjust to this nature balance, and seek for harmonious building environment for human existence and development. The influence of indoor environment plays the most important role on resident. The indoor environment is the most continual environment that people contact to. Time people spend indoor is more than 80%. The good or bad of the indoor air quality (IAQ) relates to humanbeing health directly. In recent years, due to the appearance of more and more problems about application of air conditioning unit, such as the building strengthened the closeness, the depravation of the indoor air quality (IAQ) caused sick building syndrome (SBS), too much air conditioning unit's applcation made heat island effect of city and the hot environment of outdoor became worse and worse, the energy efficient rate (EER) is affected as well. With the universality of the air condition unit and improvement of living level, the building energy consumption have a big growth trend. Under the dual pressure of saving energy and keeping good indoor air quality, scientist all over the world, especially European scientist, start to survey the natural ventilation technique over again. Using natural ventilation reasonably to replace or part replace the tradition refrigeration system of air conditioning can not only not consume non-renewable resources to achieve the valid passive refrigeration, improving the indoor hot environment; but also provide the fresh and cleanness natural air, improve the indoor air quality. It benefits for people's health, and satisfies people's mental requirement to approach and regress to the nature.Based on the principle of natural ventilation and current indoor pollution situation of our country.This paper first to analysis and induce the pollutant and pollutant source which have already existent indoor. Generalize the characteristics of an indoor pollutant and understood the national ventilation theories foundation and the use situation. At the same time, aim at the demonstration building study, use software of Phoenics to imitate and analysis the indoor air-flow organization and a few work conditions of indoor temperature field carried on under natural ventilation circumstance. Otherwise, on the well natural ventilated transitional season, the writer carried on a series of experiment research to the building room. The experiment detects the level of contaminant indoor and outdoor, include the change of main pollutant of formaldehyde, TVOC's...