Overview
- IIT Guwahati researchers reported in the Journal of Energy Storage a brick design that passively keeps rooms cooler using phase change materials.
- The bricks embed OM35, a material that melts near 35°C, so it soaks up heat during the day and releases it when temperatures fall at night.
- A biochar matrix locks the molten material in place to prevent leaks and improves heat flow inside lightweight Autoclaved Aerated Concrete bricks.
- Computer models indicate wall temperatures drop by about 3°C and cooling energy use falls by an estimated 10–20%, depending on building design and use.
- The coverage notes next steps toward market use, with The Hindu stressing cost, manufacturing and standards as hurdles and Rediff citing a Rs 115–130 unit price and a likely startup route.