Abstract
Green-roof systems offer various benefits to man and nature, such as establishing ecological environments, improving landscape and air quality, and offering pleasant living environments. This study aimed to develop an optimal-scenario selection model that considers both the economic and the environmental effect in applying GRSs to educational facilities. The following process was carried out: (i) 15 GRSs scenarios were established by combining three soil and five plant types and (ii) the results of the life cycle CO 2 analyses with the GRSs scenarios were converted to an economic value using certified emission reductions (CERs) carbon credits. Life cycle cost (LCC) analyses were performed based on these results. The results showed that when considering only the currently realized economic value, the conventional roof system is superior to the GRSs. However, the LCC analysis that included the environmental value, revealed that compared to the conventional roof system, the following six GRSs scenarios are superior (cost reduction; reduction ratio; in descending order): scenarios 13 ($195,229; 11.0%), 3 ($188,178; 10.6%), 8 ($181,558; 10.3%), 12 ($130,464; 7.4%), 2 ($124,566; 7.0%), and 7 ($113,931; 6.4%). Although the effect is relatively small in terms of cost reduction, environmental value attributes cannot be ignored in terms of the reduction ratio.
| Original language | English |
|---|---|
| Pages (from-to) | 8475-8483 |
| Number of pages | 9 |
| Journal | Environmental Science and Technology |
| Volume | 46 |
| Issue number | 15 |
| DOIs | |
| Publication status | Published - 2012 Aug 7 |
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All Science Journal Classification (ASJC) codes
- Chemistry(all)
- Environmental Chemistry
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Economic and environmental evaluation model for selecting the optimum design of green roof systems in elementary schools. / Kim, Jimin; Hong, Taehoon; Koo, Choong Wan.
In: Environmental Science and Technology, Vol. 46, No. 15, 07.08.2012, p. 8475-8483.Research output: Contribution to journal › Article
TY - JOUR
T1 - Economic and environmental evaluation model for selecting the optimum design of green roof systems in elementary schools
AU - Kim, Jimin
AU - Hong, Taehoon
AU - Koo, Choong Wan
PY - 2012/8/7
Y1 - 2012/8/7
N2 - Green-roof systems offer various benefits to man and nature, such as establishing ecological environments, improving landscape and air quality, and offering pleasant living environments. This study aimed to develop an optimal-scenario selection model that considers both the economic and the environmental effect in applying GRSs to educational facilities. The following process was carried out: (i) 15 GRSs scenarios were established by combining three soil and five plant types and (ii) the results of the life cycle CO 2 analyses with the GRSs scenarios were converted to an economic value using certified emission reductions (CERs) carbon credits. Life cycle cost (LCC) analyses were performed based on these results. The results showed that when considering only the currently realized economic value, the conventional roof system is superior to the GRSs. However, the LCC analysis that included the environmental value, revealed that compared to the conventional roof system, the following six GRSs scenarios are superior (cost reduction; reduction ratio; in descending order): scenarios 13 ($195,229; 11.0%), 3 ($188,178; 10.6%), 8 ($181,558; 10.3%), 12 ($130,464; 7.4%), 2 ($124,566; 7.0%), and 7 ($113,931; 6.4%). Although the effect is relatively small in terms of cost reduction, environmental value attributes cannot be ignored in terms of the reduction ratio.
AB - Green-roof systems offer various benefits to man and nature, such as establishing ecological environments, improving landscape and air quality, and offering pleasant living environments. This study aimed to develop an optimal-scenario selection model that considers both the economic and the environmental effect in applying GRSs to educational facilities. The following process was carried out: (i) 15 GRSs scenarios were established by combining three soil and five plant types and (ii) the results of the life cycle CO 2 analyses with the GRSs scenarios were converted to an economic value using certified emission reductions (CERs) carbon credits. Life cycle cost (LCC) analyses were performed based on these results. The results showed that when considering only the currently realized economic value, the conventional roof system is superior to the GRSs. However, the LCC analysis that included the environmental value, revealed that compared to the conventional roof system, the following six GRSs scenarios are superior (cost reduction; reduction ratio; in descending order): scenarios 13 ($195,229; 11.0%), 3 ($188,178; 10.6%), 8 ($181,558; 10.3%), 12 ($130,464; 7.4%), 2 ($124,566; 7.0%), and 7 ($113,931; 6.4%). Although the effect is relatively small in terms of cost reduction, environmental value attributes cannot be ignored in terms of the reduction ratio.
UR - http://www.scopus.com/inward/record.url?scp=84864691301&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84864691301&partnerID=8YFLogxK
U2 - 10.1021/es2043855
DO - 10.1021/es2043855
M3 - Article
C2 - 22775303
AN - SCOPUS:84864691301
VL - 46
SP - 8475
EP - 8483
JO - Environmental Science & Technology
JF - Environmental Science & Technology
SN - 0013-936X
IS - 15
ER -