Occupational Hygiene

Indoor Air facts – Ventilation and Air Quality in offices

Posted on

Introduction Millions of South Africans work in buildings with mechanical heating, ventilation and air conditioning (HVAC) systems; these systems are designed to provide air at comfortable temperature and humidity levels, full of harmful concentrations of air pollutants. While heating and air – conditioning are relatively straightforward operations, the more complex processes involved in ventilation are […]

Occupational Hygiene

Thermal comfort in the Environment

Posted on

Thermal comfort in the Environment Thermal Comfort is that condition of mind which expresses satisfaction with the thermal environment.  In terms of bodily sensations, thermal comfort is a sensation of hot, warm, slightly warmer, neutral, slightly cooler, cool and cold. Six factors affecting thermal comfort are both environmental and personal.  These factors shown below may […]