Thermal comfort in urban spaces: impact of vegetation growth: Case study: Piazza della Scienza, Milan, Italy

摘要: Abstract This paper reports on a study the evolutionary impact of vegetation in newly built square Milan designed by V. Gregotti. The aim work is to evaluate growth users’ comfort. methodology adopted involves: sets field measures (air and radiant temperature, wind velocity relative humidity); simplified thermal comfort evaluation with energy budget method COMFA; scenario for growth. When trees become adult we can observe different phenomena. shading effect under an aged tree canopy clearly shows reduction absorbed radiation users, generating very close (under 50 W/m 2 ) even high air temperature. In case points exposed direct sunlight all day long, reveals two phenomena global user: (1) reduction, screening effect, absorption diffuse solar radiation, (2) increase, elevation objects viewed sky hemisphere, terrestrial radiation.