Radiant cooling technology(RC)is widely accepted in residential buildings in North America and Europe as a powerful competitor with energy saving advantage to conventional air-conditioner(AC),however,in the hot and humid region in which many countries are the world fastest growing and there are the world second largest air conditioning market,RC is rarely seen.The main reason is that thermal comfort in this climate cannot be achieved by RC system alone when operate above air dew-point temperature in order to avoid vapour condensation on its cooling panel.