TY - JOUR T1 - Effect of Inlet and Outlet Air Terminals Location on the Temperature Distribution and Contaminates Concentration in a Laboratory under Iraqi Climate AU - Abbas Mahdi, Ala’a AU - Wahhab Khadim, Mohammed AU - Mohammed Hassn, Ammar Abdulhussein JO - Journal of Engineering and Applied Sciences VL - 13 IS - 24 SP - 10271 EP - 10281 PY - 2018 DA - 2001/08/19 SN - 1816-949x DO - jeasci.2018.10271.10281 UR - https://makhillpublications.co/view-article.php?doi=jeasci.2018.10271.10281 KW - Mixing ventilation indoor air quality KW -air distribution performance index KW -numerical model KW -Iraqi cooling code KW -foot level AB - Ventilation is the main performance requirement in laboratory design, as it has to guarantee a safe and comfortable indoor environment. Standards and guidelines on laboratory ventilation often impose high ventilation rates increasing the energy need for ventilation. This research focuses on the steady-state distribution of temperature and contaminate concentrations in a real environment which was a function of several factors such as the position of air inlet and exhausts. Different distances between inlet diffuser and exit grill were investigated to determine the optimum distances between inlet diffuser and exit grill. CO2 is used as an indicator of the concentration of pollutants inside tested room. Room concentration patterns for a laboratory were simulated with Computational Fluid Dynamics (CFD) simulations by using (ANSYS 14) computer programs for various distances. The computational results were validated with design data due to Iraqi cooling code (setup temperature and temperature difference from head to foot level). The numerical results showed that the exhaust grills located near the ceiling resulted in lower pollutant concentrations than the corresponding exhausts near the floor. ER -