TY - JOUR
T1 - A study on optimum circulation period of products for minimizing lifecycle energy consumption
AU - Mizuno, Yuji
AU - Kintoki, Naoya
AU - Kishita, Yusuke
AU - Fukushige, Shinichi
AU - Umeda, Yasushi
PY - 2015
Y1 - 2015
N2 - Combination of long product lifetime and recycling is effective for reducing material use. However, in the case of products that uses energy in their use phase, early replacement of old products with new energy efficient products may contribute to reduction of lifecycle CO2 emission. In the previous studies, we proposed a formula to calculate optimum circulation period (OCP) of the products based on the improvement of energy efficiency. The formula was applied to the products produced in 1991-2000. This paper calculates the OCP of the latest products and analyzes the effect of rapid circulation of products. As a result, OCP and RCP effects are different from the previous studies, because characteristics of latest products are different from products of 1991-2000. Especially, OCP of Hybrid Electric Vehicles excesses three times than the normal product life span. Special case of rapid circulation between different type products, such as Gasoline Vehicles and Hybrid Electric Vehicles was effective for CO2 emission reduction.
AB - Combination of long product lifetime and recycling is effective for reducing material use. However, in the case of products that uses energy in their use phase, early replacement of old products with new energy efficient products may contribute to reduction of lifecycle CO2 emission. In the previous studies, we proposed a formula to calculate optimum circulation period (OCP) of the products based on the improvement of energy efficiency. The formula was applied to the products produced in 1991-2000. This paper calculates the OCP of the latest products and analyzes the effect of rapid circulation of products. As a result, OCP and RCP effects are different from the previous studies, because characteristics of latest products are different from products of 1991-2000. Especially, OCP of Hybrid Electric Vehicles excesses three times than the normal product life span. Special case of rapid circulation between different type products, such as Gasoline Vehicles and Hybrid Electric Vehicles was effective for CO2 emission reduction.
KW - Optimum circulation period
KW - Product circulation
KW - Product life cycle
KW - Rapid circulation of products
KW - Sustainable consumption
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U2 - 10.1016/j.procir.2015.02.209
DO - 10.1016/j.procir.2015.02.209
M3 - Conference article
AN - SCOPUS:84939617946
VL - 29
SP - 597
EP - 602
JO - Procedia CIRP
JF - Procedia CIRP
SN - 2212-8271
T2 - 22nd CIRP Conference on Life Cycle Engineering, LCE 2015
Y2 - 7 April 2015 through 9 April 2015
ER -