Radiant wall cooling systems were tested to see how well they transfer heat. The researchers built a special chamber to do the tests and found that the panels with an aluminum layer cooled better than traditional ones. They also discovered that radiation is the main way heat is transferred in these systems, making up about 70% of the total heat transfer. The tests showed that the total heat transfer coefficient for the cooled radiant wall was 8.25 W m−2.K−1, with radiation contributing 5.52 W m−2.K−1 and convection contributing 2.41 W m−2.K−1.