Theoretical evaluation of thermal and energy performance of tropical green roofs

The impact of greening systems on building energy performance: A literature review

“…He explains that a dry environment increases the evapotranspiration rate, while wind accelerates this trend by removing humidity from the vicinity of vegetation, therefore enhancing the cooling effect. In line with the previous study, Tsang & Jim [13] measured the highest amount of transpiration during early autumn when the weather is dry and solar radiation is considerably high.…”

“…In other studies, Tsang & Jim [13] conducted a theoretical model to estimate the thermal performance of a green roof in the tropical climate of Hong Kong. Through a sensitivity analysis, they found that albedo value of the green surface, air convection rate near the canopy and the water content of growing medium are the three main factors that can regulate heat storage in a green roof.…”

Observation and Estimation of Evapotranspiration from an Irrigated Green Roof in a Rain-Scarce Environment

“…Compared to the nonvegetated roofs, vegetation could elevate ET rates by over 25% on average. The observed ET rates of sedums and grass tend to be slightly higher than most studies conducted in rain-rich environments [23,29,33,[85][86][87]. For example, Rezaei [85] observed ET rates of 1.68 mm/d for sedums and 1.06 mm/d for the non-vegetated medium with unlimited water supply in an indoor environment.…”

A composite cool colored tile for sloped roofs with high ‘equivalent’ solar reflectance

“…Studies on the energy and environmental performance [10] and the surface heat budget [11] of green roofs were carried out more than a decade ago, also trying to establish models for building energy simulation programs [12]. More recently, investigations were made on building energy savings [13], pollution abatement [14] and mitigation potential related to green roof in specific areas such as Chicago [15], tropical areas [16] and Mediterranean regions [17].…”