MUMBAI, India, Nov. 13 -- Intellectual Property India has published a patent application (202621118386 A) filed by Dr. D. Y. Patil Institute Of Technology, Pimpri, Pune on October 03, 2026, for Smart Safety System For Solar Water Heater Using Arduino Uno.

Inventors include Sarthak Nanasaheb Kasode; Pawar Vaibhav Raju; Rahirkar Akash Santosh; Najan Tushar Sunil; Palve Umesh Ganesh; and Jaya Sonal Patil.

The application for the patent was published on November 13, 2026, under issue no. 46/2026.

Abstract: The present invention relates to a smart safety system for a solar water heater, integrated with an Arduino UNO based control unit. The system is designed to automatically monitor and regulate the temperature of water stored in a solar water heating installation, thereby preventing overheating and scalding hazards. A PT-100 temperature sensor mounted in the insulated storage tank continuously measures the water temperature and transmits the corresponding signal to the Arduino UNO. The Arduino UNO compares the measured temperature with a pre-set safe threshold and, upon detecting an unsafe rise in temperature, activates a relay module which in turn actuates a solenoid valve to regulate or release hot water and admit cooler water, thereby restoring the temperature to a safe range. An LCD display mounted at a user-visible location provides real-time indication of the water temperature and system safety status. The invention utilises indigenous, low-cost and locally available components, thereby supporting the Make in India initiative while offering a durable, eco-friendly and easily retrofittable alternative to conventional mechanical thermostatic valves. The system is scalable and adaptable for residential, commercial and institutional solar water heating installations, contributing to safer, smarter and more energy-efficient building infrastructure.

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