To study the importance of large green areas for the microclimate of NUS environment .
To study the energy savings of a building as the result of lowered ambient temperature and improved roof thermal properties.
Methodology Real Data Result Compilation Study of Satellite Images Field Measurement TAS Energy Simulation (Base Model and Parametric Variation) ENVI-met Simulation (Base Model and Parametric Variation) Prediction
ZONE - 4 ZONE - 1 ZONE - 2 ZONE - 3 http://www.nus.edu.sg/oed . NUS Zoning Plan Zone 1, 3 and 4 are the main facilities where the Faculties and their amenities (Residential hall, canteen) were built .
Large greenery area is found along Kent Ridge Road and Prince George’s Park Road.
Due to the shading provided by trees and the evapotranspiration process of the trees, the deep green colour distribution in surface temperature can be seen clearly at the central part of dense greenery area.
The buildings surrounded by or at the perimeter of the dense greenery area have better thermal distribution than other buildings further away from it, as shown by the yellowish patches.
Thus, it can also be concluded that a building near or surrounded by the
dense greenery area has better ambient temperature than the one far from it.
Some areas can be improved by adding more trees or shrubs. Near Techno Edge canteen Scope for improvement
Most of the NUS buildings were designed with combination of pitched roof and flatted roof. The flatted roofs were left unused There are a lot of thermal benefits by transforming it into Rooftop Garden, Direct and Indirect effects.
Limited numbers of HOBO meter for the representation of distribution greenery and buildings across the complex.
ENVI-met simulation has maximum grid scale of 250 x 250 x 30 grids. The larger is the modelled environment, the smaller is the scale of the simulation model. NUS model has the scale 1 grid = 10.71 m.
ENVI-met simulation on rooftop greenery to get the temperature difference as a result of indirect cooling effect is not possible due to time and hardware constraints as the simulation generally takes 10 times longer than that without rooftop greenery.