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This paper describes a study of the performance of a ventilation system in a typical patient room using CFD modeling and calculations of various ventilation indices. The principal purpose of heating, ventilating and air conditioning systems (HVAC) is to provide conditions for human thermal comfort. Flow simulations with the advent of computer architectures with superfast processing capabilities are rapidly emerging as an attractive alternative to conventional HVAC analysis which is either too restrictive or expensive. Design and operation of a typical ventilation system is fully investigated in this study through HVAC flow simulation. A tool of computational fluid dynamics (CFD) is employed to assist the process. The objective is to investigate ventilation system while maintain good indoor thermal and air quality. The Model was designed into Solidworks and a computational domain was created. Solidworks Flow Simulation was used to iterate toward a converged solution with the goal of obtaining comfort criteria of the ventilation system. The results were analyzed and compared with standard values of thermal comfort criteria to validate those results. Keywords -HVAC, SolidWorks, simulation, comfort criteria, ventilation, AQI, PPD, PMV

Performance Investigation of Building Ventilation System by Calculating Comfort Criteria through HVAC Simulation