Open AccessLCCA and LCA to Evaluate Feasibility for Introducing High-Efficiency Motors into Air Ventilation Systems of Public Facilities
Author(s) -
Junlong Quan,
Soo-Ho Choi,
Tae-Hwan Kwon,
Choi Hyemi,
Juhyung Kim,
Jae-Jun Kim
Publication year - 2015
Publication title -
han-guk geonseol gwalli hakoe nonmunjip/korean journal of construction engineering and management
Language(s) - English
Resource type - Journals
eISSN - 2465-9703
pISSN - 2005-6095
DOI - 10.6106/kjcem.2015.16.4.041
Subject(s) - life cycle assessment , life cycle cost analysis , energy consumption , ventilation (architecture) , consumption (sociology) , environmental economics , engineering , environmental science , operations management , reliability engineering , economics , production (economics) , mechanical engineering , social science , electrical engineering , sociology , macroeconomics
???? ?? ???? ??? ?40%?? ??? ??. ???? ??? ???? ???? ??? ??? ???? ??? ??. ??? ?? ???? ???? ???? ?? ???? ????. ???? ???? ?? ??? ???? LCCA(Life Cycle Cost Analysis)? LCCA? ?? ???? ??, ???? ??? ??? ??. ???? ?? ???? LCA(Life Cycle Assessment)??? ?? ?? ?? ???? ??? ???? ???? ??? ???? ??? ??? ??. ?? ? LCCA ? LCA? ??? ??? ?? ? ??? ??? ???? ??? ??? ??? ??? ??? ??.
The amount of energy consumed in air ventilation systems of public facilities accounts for 40% of their total energy consumption. To reduce their energy consumption, applying variable speed operation controlled by an inverter with a high-efficiency motor is suggested. Since these methods require higher initial investment costs compared to the existing systems, economic evaluation should be conducted from a long-term perspective. While LCCA(Life Cycle Cost Analysis) model is useful to estimate net savings of alternatives that differs with respect to initial costs and operating costs, the environmental burdens are not considered. On the contrary LCA(Life Cycle Assesment) model is suitable to assess environmental impacts associated with the stages of a product's life but it does not consider costs. In this study, the high-efficient motors are introduced into the air ventilation system of a subway station and a comprehensive analysis on the economic and environmental impacts of the proposed method is conducted by using LCCA and LCA model.? ??? (14RTRP-B067916-02)? ??