Ventilation is the process of exchanging air from outside as well as circulating within a room or building. Ventilations are used in all types of building works like house, schools, hospitals, companies and almost everything. Poor ventilation normally causes head ache, irritation in nose, eyes, skin etc. Thus, the main purpose of ventilation is that making the occupants in the building comfortable by removing air pollutants Roof and gutter contractor.
The ventilation can be either of forced or natural types. One more advantage of air ventilation is that it maintains the interior quality of building. Ventilation filters the air pollutants and dust particles. Advanced ventilation process clears air and re circulates within the building.
The children are susceptible for poor indoor air quality. The poor ventilation contributes to spread bacteria and viruses and thus students are exposed to toxins and allergens. Schools should have proper school ventilation system in order to maintain the oxygen level as well as reducing carbon dioxide level in the class room.
The two types of tool used in school ventilation are class vent that helps in selecting strategy and class cool that helps in predicting the temperature. The school ventilation are definitely to be placed in the school building that helps in providing good light effect as well control noise and provides good health and thermal comfort. The natural day light however minimizes the usage of electric lights. The natural light usually provides a calm and cool atmosphere to the students making them comfort. This reduces the absenteeism, improves the learning power and also teacher’s skill through moisture management, contaminant source control.
The school ventilation equipment normally contains fume hood, safety cabinet, dilution ventilation, distribution of room air plus heat recovery ventilation. Ventilation efficiency is determined by the design and layout and the effect of the purpose also depends on placement and proximity of diffusers and return air outlets.
Fume hood is a large piece designed to limit the exposure of hazardous or toxic fumes. It protects the user and environment. Safety cabinet purpose is mainly to protect the surrounding environment from pathogens Dilution ventilation helps in reducing the concentration of chemicals. Room air distribution characterizes the air flow and how the air is removed from the spaces. Heat recovery employs the counter-flow heat exchanger between inbound and out bound air flow. It is also known to called by heat exchanger, air exchanger etc.
The type of school ventilation systems used in schools is natural ventilations. The external air flows indoor in maintaining temperature. Two types of natural ventilations are wind driven and buoyancy driven. It can be processed by the presence of open able window or trickle vent. The main advantages of natural ventilations in schools are
They improve indoor air quality
They Save high energy level
They assist in dropping the emission of greenhouse gas
They assist in Controlling the level of oxygen
They reduces the risk of sick building syndrome
They help in increases work productivity
They provide a healthy environment
They decrease the noise level in the class rooms avoiding head ache and irritation.