Bangkok is one of the most dense cities in the world with high temperature and humidity according to the tropical climate. Almost 30 percent of the housing energy consumption cost from air conditioning. In order to reduce household cost and carbon emissions, the design of our project, Bangkok residential building, proposes to use a passive cooling system as a main strategy with Carbon neutral based materials.  From research of Bangkok climatic issues, we have extracted the principals of Thai vernacular architecture as the design involves a passive cooling system, and adapt to our project strategies such as incline roof for heat circulation, ground floor openings for cross ventilation and avoid flooding problems.  To reduce heat temperature of interior space, Bangkok Residential Building is proposed with the Box-in-Box concept that includes interior façade and exterior shell. Where the zone between two facades is used as a buffer area to cool down the air before entering to the building. The project consists of 2 strategies of design related to the environmental data including forming optimization based on solar radiation and comfort temperature, second is the façade openings based on wind pressure analysis, solar radiation optimization, and daylight factor for efficient indoor visibility.

In conclusion, The design of project strategies has reduced 3.3 Degree Celsius according to the simulation results. And the façade openings could provide wind ventilation to create cross ventilation from South East to North West. And also, we have achieved to use Timber as a main structural materials which our goals are to create sustainability in terms of Carbon-neutral construction.

Located in a tropical climate zone and classified as a mostly humid zone. Bangkok has high temperature and humidity variation between seasons with 3 out of 4 quarters are moderate heat stress with more than 32 Degree Celsius recorded, and feel like temperature are 37 Degree Celsius.

The Building consists of 2 strategies of design including form optimization based on solar radiation and comfort temperature, second is the façade openings based on wind pressure analysis with mainly focusing on passive cooling strategies extracted from Thai vernacular based architecture.