Indoor Thermal Modification of a Ventilated Courtyard House in the Tropics

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This paper investigates the effects of airflow patterns and airflow rates on thermal behavior of ventilated courtyard building in a warm humid climate. With some airflow patterns indoor air temperature can be brought to a level below the ambient, while with others the indoor air temperature may be higher than the ambient. The integration of a courtyard in the building design can optimize indoor airflow and is of significant importance with regard to the indoor thermal environment provided the courtyard maintains correct contacts with the outdoor environment. The current paper explores airflow patterns and airflow rates in a modern tropical courtyard house in respect to corresponding indoor thermal modifications. A thermal investigation was carried out on the site by manually changing the composition of airflow inlets (openings) found in the building envelope. From the results it is observed that the different airflow patterns affected different thermal environments and sometimes a cool condition within the courtyard and in the surrounding indoor spaces. Relatively low indoor air temperature was observed with a particular air movement pattern created through the openings found on a longitudinal horizontal axis through the courtyard. The temperature was below the ambient by 1.3 degree C with an airflow range of 1.5 to 2.0 air changes h^<-1>.
社団法人日本建築学会の論文
2002-03-20