Advances in Chemical Engineering and Science, 2017, 7, 325-332 http://www.scirp.org/journal/aces ISSN Online: 2160-0406 ISSN Print: 2160-0392 Proposed Procedure to Design an Optimum Ventilation System for Chemical Laboratory Gara Idrees Abdoon 1 , Nagwa Fadl Bashir 2* 1 Post Graduate Student, Department of Chemical Engineering, Faculty of Engineering, ALNeelain University, Khartoum, Sudan 2 Department of Chemical Engineering, Faculty of Engineering, ALNeelain University, Khartoum, Sudan Abstract The safe environmental condition of biological and chemical laboratories at universities in Sudan is a real and tangible problem that needs to be properly addressed due to the increased number of universities which grew up to 25 State-Level Universities. This could sum up to 200 students per academic year. One of the significant problems is the proper ventilation inside the laborato- ries. This paper aims to provide a proposal for design of an optimum ventila- tion system for: 1) Good and safe environment; 2) Comfortable workplace for laboratories occupants; 3) Ensure the health of the surrounding environment while minimizing the energy consumption. Five chemicals are selected for this study as the most consumed and the most hazardous (permissible exposure limits) inside the laboratories of the department of chemistry faculty of science, Al-Neelain university; formaldehyde, nitric acid, acetic acid, xylene and ethanol. Concentration level of materials in laboratory is calculated in correlation with air exchange rate, vapor pressure and area of laboratory. Re- sults concluded to that up 15 ACH the concentration of formaldehyde and ni- tric acid is still high. Recommendations are given with the limitation of using the suggested mathematical model, regarding laboratory conditions, severity of the material hazardousness, number of people. Keywords Laboratory Ventilation, Vapor Contamination, Air Changes Per Hour, PEL.ACH 1. Introduction The laboratory ventilation system is designed to correct the laboratory environ- ment. All types of laboratories (chemical, biology, and microbiology) may generate pollution by harmful chemical gases and vapors. Particulates and biological agents, this pollution is processing by a correct ventilation system to remove this How to cite this paper: Abdoon, G.I. and Bashir, N.F. (2017) Proposed Procedure to Design an Optimum Ventilation System for Chemical Laboratory. Advances in Chemical Engineering and Science, 7, 325-332. https://doi.org/10.4236/aces.2017.73024 Received: February 13, 2017 Accepted: July 18, 2017 Published: July 21, 2017 Copyright © 2017 by authors and Scientific Research Publishing Inc. This work is licensed under the Creative Commons Attribution International License (CC BY 4.0). http://creativecommons.org/licenses/by/4.0/ Open Access DOI: 10.4236/aces.2017.73024 July 21, 2017