HVAC

Heating, Ventilating and Air Conditioning (HVAC) system in pharmaceutical industries must be integrated with an efficient control and automation scheme to maintain standard atmospheric parameters under any load conditions. A data driven approach to construct the relationship between input and output parameters using data collected from certain manufacturing/packaging areas of pharmaceutical industries. Several methods used for HVAC control are identified from literature survey and review. Traditionally HVAC or BMS is controlled by DDC which is dedicated and closed control system with proprietary hardware and software packages. It is proposed to use PAC (Programmable Automation Controller) along with SCADA (Supervisory Control and Data Acquisition System) and HMI (Human Machine Interface; a dedicated display with embedded features) in which the logic will be developed using IEC standard PLC languages like LD, FBD, SFC and ST. In this project control strategy is proposed for the HVAC system for maintaining pharmaceutical industries indoor environment to control Relative Humidity (R.H.%), temperature, Standard Cubic Feet per Minute (SCFM) /differential pressure with high energy efficiency. Keywords-PAC; SCADA; HVAC; HMI, SCF