Adaptive comfort model for tree-shaded outdoors in Taiwan

Reuy Lung Hwang, Tzu Ping Lin, Ming Jen Cheng, Jen Hao Lo

Research output: Contribution to journalArticlepeer-review

56 Citations (Scopus)


Tree-shaded outdoors can reduce the heat effect by ameliorating the microclimate and enhancing the human thermal comfort outdoors; for this reason, they are main places for rest, recreation and social activity in Taiwan's cities. Field comfort surveys of 3839 interviewees were conducted in tree-shaded spaces throughout a year. The aims were to obtain a better understanding of human thermal comfort response outdoors and to propose an adaptive comfort model for tree-shaded spaces. A comfort zone, centering on neutral operative temperature which is an empirically derived linear function of mean monthly outdoor temperature, of 6°C for 90% acceptability and 8°C for 80% acceptability was suggested for tree-shaded spaces from surveyed data, adding that a non-linear function of the temperature difference between actual operative temperature and neutral operative temperature was established that aims to predict the percentage of heat or cold discomfort at a particular outdoor thermal condition. An application of the established adaptive comfort model on an actual tree-shaded space was demonstrated to show its practicality in long-term evaluation of a particular thermal environment.

Original languageEnglish
Pages (from-to)1873-1879
Number of pages7
JournalBuilding and Environment
Issue number8
Publication statusPublished - 2010 Aug

All Science Journal Classification (ASJC) codes

  • Environmental Engineering
  • Civil and Structural Engineering
  • Geography, Planning and Development
  • Building and Construction


Dive into the research topics of 'Adaptive comfort model for tree-shaded outdoors in Taiwan'. Together they form a unique fingerprint.

Cite this