Introduction of hybrid radiant cooling system for adapting hot and humid climates

The main purpose of this study is to introduce a hybrid radiant cooling system which combines a conventional radiant cooling panel with an Airbox convector hydronically connected in series for adapting hot and humid climates as a novel radiant cooling strategy. This novel system can reduce moisture condensation risks on a surface of chilled ceiling panel and generates additional cooling capacity because the Airbox convector can dehumidify indoor air when indoor humidity level is increased and it enhances a mixed convection effect which combines natural convection with mechanical forced convection effect. And this system simply adjusts cooling output by the Airbox's fan control and indoor air pollution rate because the Airbox includes an air filter, therefore, this system can be adapted to various indoor thermal conditions. This paper presents strategies to use the system effectively and to save cooling energy consumptions. And this study demonstrates systematic strategies how the hybrid radiant cooling system can minimize main challenges of using typical radiant cooling system and improve cooling and dehumidification performance in various thermal conditions.