Steam Sterilizer for Healthcare and Industry Applications

Abstract

This project presents the design and development of a Steam Sterilizer for Healthcare and Industry Applications that integrates mechanical fabrication, electronic control, and software automation into a unified system. The sterilizer was constructed with a stainless-steel pressure chamber, heating elements, and safety valves, combined with sensors for real-time monitoring of temperature and pressure. A microcontroller-based control board with PID algorithms was implemented to maintain stable heating at the required set-point, ensuring accurate sterilization conditions. Additionally, a SCADA system was developed to provide a user-friendly interface for monitoring, control, database logging, and batch-wise report generation. During testing, the system achieved a stable sterilization temperature of 121°C within 30 minutes, with pressure levels accurately tracked by both sensors and SCADA. The PID controller effectively minimized overshoot and maintained consistent thermal regulation. Validation with a Bowie-Dick test pack confirmed successful steam penetration and contamination-free results, ensuring process reliability. The project demonstrates a low-cost, reliable, and efficient sterilization solution suitable for hospitals, laboratories, and small industries, offering an affordable alternative to costly imported systems.