Kinerja Kenyamanan Termal Rumah Adat Dulohupa
DOI:
https://doi.org/10.35870/ljit.v4i2.8871Keywords:
Adaptive comfort; natural ventilation; PMV/PPD; thermal comfort; vernacular architectureAbstract
Vernacular architecture in humid-tropical climates relies on passive strategies such as elevated floors, steep roofs, and cross-ventilation to achieve comfort without mechanical cooling. Empirical verification of this performance remains scarce for Gorontalo's traditional buildings, including Dulohupa, a customary adat hall. This study evaluated Dulohupa's thermal comfort and compared model predictions with occupants' perception. A mixed-methods case study combined measurement of air temperature, relative humidity, and air velocity at six points over three days (29–31 August 2026) with a Thermal Sensation Vote (TSV) questionnaire (n=18). Predicted Mean Vote/Predicted Percentage of Dissatisfied (PMV/PPD) were computed with the ASHRAE 55 model and cross-checked using the CBE Thermal Comfort Tool. Indoor air temperature (Points 3 and 5) averaged 32.5°C, exceeding the SNI 03-6572-2001 comfort range (20.5–27.1°C). PMV/PPD indicated severe discomfort (PPD>90%) at low-airflow points (0.08–0.09 m/s) but near-neutral conditions at outdoor points (>2.0 m/s). Despite this, TSV skewed slightly cool (mean=−0.78) and 94.4% of respondents felt comfortable, revealing a model–perception gap consistent with adaptive comfort theory. Air velocity, rather than air temperature, emerged as the dominant factor. Naturally ventilated tropical vernacular buildings should therefore be evaluated with adaptive comfort standards (ASHRAE 55) rather than static PMV/SNI thresholds alone.
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