IIT Guwahati Develops Smart Bricks That Keep Homes Naturally Cool

IIT Guwahati researchers developed innovative energy-efficient bricks using phase change materials that help maintain indoor temperature naturally. These bricks reduce heat, lower AC usage, save electricity, and promote sustainable construction, though challenges remain in cost and large-scale adoption.

Post Published By: Sona Saini
Updated : 28 March 2026, 5:28 AM IST

New Delhi: Scientists at the Indian Institute of Technology Guwahati (IIT-G) have developed a special type of brick designed to help keep homes naturally cool. The objective of this new technology is to reduce electricity consumption and protect the environment.

What was the problem?

Nowadays, most homes and buildings rely on air conditioners (ACs) to escape the heat. However, ACs consume a vast amount of electricity and also contribute to increased carbon emissions. This causes harm to the environment. To find a solution to this very problem, the scientists developed this new brick.

How ​​does this brick work?

This brick utilizes a special type of material known as a Phase Change Material (PCM). This substance has the unique property of absorbing and releasing heat in response to temperature fluctuations.

During the day, when temperatures are high, the brick absorbs and stores the heat within itself. At night, when temperatures drop, it gradually releases the stored heat back out.

Through this process, the internal temperature of the home remains balanced and does not overheat.

Which material is the most effective?

The scientists utilized a PCM named OM35, which melts at approximately 35°C. This makes it highly suitable for hot and humid regions like India, where temperatures frequently hover between 28°C and 38°C.

Solving the Leakage Problem

One major challenge associated with PCMs is the risk of leakage when they melt. To prevent this, the scientists incorporated "biochar" into the design.

  • Biochar is a carbon-rich substance.
  • It acts as a matrix, effectively holding the PCM in place.
  • This prevents leakage while simultaneously ensuring the structural integrity and strength of the brick.

Benefits of this Technology

  • Indoor temperatures are naturally regulated.
  • The need for air conditioning is significantly reduced.
  • Electricity is conserved.
  • Environmental impact is minimized.

What are the hurdles to market entry?

Although this technology is highly useful, bringing it to the market at present is not an easy task. There are several reasons for this:

  • The initial cost is high.
  • Large-scale production is difficult.
  • There is a lack of awareness among builders and the general public.
  • Few practical projects utilizing this technology have been undertaken so far.

The Way Forward

Scientists believe that with government support, a reduction in costs, and the implementation of this technology in real-world projects, it has the potential to bring about a major transformation in the construction sector in the future.

This new brick developed by IIT Guwahati could prove to be a major revolution in the coming times regarding energy conservation and environmental protection. This technology will not only keep homes cool but also help reduce electricity bills for consumers.

Location : 
  • New Delhi

Published : 
  • 28 March 2026, 5:28 AM IST