In addition, the roof exhaust system must also permit compliance with appropriate ordinances for pollution, noise, and/or odor. This article will look at various methods used for achieving these objectives, the alternatives for selecting the proper system with advantages and disadvantages, and what to look for in a cost-effective, energy efficient system to ensure safety standard and code compliance.
To ensure worker safety, standard/code compliance, and maintain a “good neighbor” policy with regard to laboratory workstation fume hood exhaust systems, there are generally four goals to achieve: eliminating re-entrainment of exhaust discharge into the facility; eliminating atmospheric pollution to comply with applicable laws; achieving these objectives without generating objectionable noise levels at the property line and in the lab; and considering the roof line and its related aesthetic issues.