Green Roof Ambient

The study comprises three parts.

Green roof ambient.

This paper studies the effect of a green roof on the ambient co 2 concentration as an example to assess the benefit of urban greening. A green roof can remain cooler than the ambient air temperature around it. The extent of the green roof effect is related to the condition of the plants the position of the green roof and the ambient airflow condition. Green roof temperatures can be 30 40 f lower than those of conventional roofs and can reduce city wide ambient temperatures by up to 5 f.

Year round green roofs can help to keep ambient temperatures around the panels at or near 25 0 c. The methods employed in this study can also be applied to evaluate the effect of any other types of. This is the best temperature for solar panels to work most efficiently. This produces a bottom line energy savings of roughly 0 23 per square foot.

For a one story building this can lead to a reduction in average daily cooling costs of. 1 field measurement of the difference of co 2 concentration at a location in the middle of the plants in a small plot of green roof and one in the surrounding area 2. The green roof element provides the ballast to hold the a frames and panels in place. In a sunny day a green roof may lower the co 2 concentration in the nearby region as much as 2.

1 2 in addition green roofs can reduce building energy use by 0 7 compared to conventional roofs reducing peak electricity demand and leading to an annual savings of 0 23 per square foot of the roof.