Our thanks to hydronic engineer par excellence Robert Bean for bringing this to our attention. An engineering paper on the offices of an Indian IT company demonstrates that radiant cooling is cheaper to install and operate than conventional HVAC. The large office building has two symmetrical halves, one cooled conventionally and one cooled by radiant.
Radiant cooling is cheaper to install, operate than conventional A/C
The building is owned by Infosys Ltd., an Indian IT company, in Hyderabad. The 24,000-square meter — 258,000-sq.ft. — building is split into identical halves, each comparably loaded. One half is conditioned with efficient air conditioning, designed to beat ASHRAE 90.1 standards by 30%, the other half is conditioned with radiant cooling. The building has been in operation for a year, so results can be measured.