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ID: 127886

Decision support model for establishing the optimal energy retr / Hong, Taehoon; Koo, Choongwan; Kim, Hyunjoong; Park, Hyo Seon

Hong, Taehoon	Journal Article
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Publication

2014.

Summary/Abstract

The number of multi-family housing complexes (MFHCs) over 15 yr old in South Korea is expected to exceed 5 million by 2015. Accordingly, the demand for energy retrofit in the deteriorating MFHCs is rapidly increasing. This study aimed to develop a decision support model for establishing the optimal energy retrofit strategy for existing MFHCs. It can provide clear criteria for establishing the carbon emissions reduction target (CERT) and allow efficient budget allocation for conducting the energy retrofit. The CERT for "S" MFHC, one of MFHCs located in Seoul, as a case study, was set at 23.0% (electricity) and 27.9% (gas energy). In the economic and environmental assessment, it was determined that scenario #12 was the optimal scenario (ranked second with regard to NPV40 (net present value at year 40) and third with regard to SIR40 (saving to investment ratio at year 40). The proposed model could be useful for owners, construction managers, or policymakers in charge of establishing energy retrofit strategy for existing MFHCs. It could allow contractors in a competitive bidding process to rationally establish the CERT and select the optimal energy retrofit strategy. It can be also applied to any other country or sector in a global environment.

Key Words

Economic Development ; South Korea ; Environment Security ; Energy Policy ; Global Environment ; Energy Strategy ;
Urban Energy Consumption ; Carbon Emissions Reduction Target - CERT ; Energy Retrofit ; Multi-Family Housing Complex - MFHC ; Optimal Energy Retrofit Strategy - OERS ; Urban Electric Supply System ;
Urban Energy Demand ; Urban Energy Supply ; Global Energy Environment ; Efficient Budget Allocation

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ID: 133115

Development of a new energy efficiency rating system for existi / Koo, Choongwan; Hong, Taehoon; Lee, Minhyun; Park, Hyo Seon

Hong, Taehoon	Journal Article
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Publication

2014.

Summary/Abstract

Building energy efficiency rating systems have been established worldwide to systematically manage the energy consumption of existing buildings. This study aimed to develop a new energy efficiency rating system for existing residential buildings from two perspectives: (i) establishment of reasonable and fair criteria for the building energy efficiency rating system; and (ii) establishment of comparative incentive and penalty programs to encourage the voluntary participation of all residents in the energy saving campaign. Based on the analysis of the conventional energy efficiency rating system for existing residential buildings, this study was conducted in five steps: (i) data collection and analysis; (ii) correlation analysis between the household size and the CO2 emission density (i.e., CO2 emission per unit area); (iii) cluster formation based on results of the correlation analysis using a decision tree; (iv) establishment of a new energy efficiency rating system for existing buildings; and (v) establishment of incentive and penalty programs using advanced case-based reasoning. The proposed system can allow a policymaker to establish a reasonable and fair energy efficiency rating system for existing residential buildings and can encourage the voluntary participation of all residents in the energy saving campaign.

Key Words

Energy Policy ; Energy Consumption ; Conventional Energy ; Residential Building ; Energy efficiency rating system ; Incentive and penalty programs

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