Economic and environmental evaluation model for selecting the optimum design of green roof systems in elementary schools

Jimin Kim, Taehoon Hong, Choong Wan Koo

Research output: Contribution to journalArticle

56 Citations (Scopus)

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 languageEnglish
Pages (from-to)8475-8483
Number of pages9
JournalEnvironmental Science and Technology
Volume46
Issue number15
DOIs
Publication statusPublished - 2012 Aug 7

Fingerprint

Roofs
roof
Life cycle
environmental values
life cycle
Cost reduction
Economics
economics
cost analysis
Carbon Monoxide
Air quality
environmental effect
Environmental impact
Costs
air quality
Carbon
Soils
carbon
cost
evaluation

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Environmental Chemistry

Cite this

@article{647a10f2e0074b2ca4675d000ad22b2f,
title = "Economic and environmental evaluation model for selecting the optimum design of green roof systems in elementary schools",
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.",
author = "Jimin Kim and Taehoon Hong and Koo, {Choong Wan}",
year = "2012",
month = "8",
day = "7",
doi = "10.1021/es2043855",
language = "English",
volume = "46",
pages = "8475--8483",
journal = "Environmental Science & Technology",
issn = "0013-936X",
publisher = "American Chemical Society",
number = "15",

}

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 journalArticle

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 -