Thermal comfort solution by natural system for dining hall, A case study; homestay in Chanthaburi

Abstract

Thermal comfort is essential for hot humid climate to maintain a high quality of life.  Generally, unmodified environment has a higher temperature than ambient air, and it make feel-like temperature hotter than the comfort zone.  This research used the restaurant building of Baan Manee Daeng Hotel, Chanthaburi Province as a case study.  The results showed that when the environment was enriched by creating a mangrove forest with sun-shaded shoots.  Water is drawn and evaporated at the stomata of the leaves. The stems are airy and the wind can blow through. There is cold water that is not exposed to the sun. and there is evaporation of water at the water surface.  When the wind at an air temperature of 35 degrees Celsius blows through the mangrove forest, the air temperature will drop to 32 degrees Celsius.  And then the wind will blow into the non-air-conditioned building that has been designed with a roof that can prevent heat well.  The average surface temperature is lower than the air temperature and lower than the human body. The temperature at the roof surface is the same as the air. And there is a cold area due to the induction cold coming from the cold-water surface beneath the building.  It was found that inside the building there will be a feeling of 29.5-30.5 degrees Celsius.  When increasing the wind speed at 10 kilometers per hour It will make you feel cooler like 26-27 degrees Celsius.  This research showed that thermal comfort can be achieved with natural systems by properly modifying the environment and building design.