Abstract
Life cycle assessment (LCA) is widely used to evaluate product’s life cycle environmental impact and identify the environmental weaknesses. However, it is difficult for existing LCA software to perform flexible LCA analysis based on the product life cycle characteristics and industry background. Meanwhile, under the existing LCA research model, product designers and manufacturers are usually not LCA evaluators, resulting in a certain time gap between the evaluation results and product improvement. Designers with less experience in green design often find it difficult to identify high environmental impact links in products at different life cycle stages and product levels, and updated products are challenging to meet various environmental restrictions. This paper establishes a multi-module product life cycle analysis model that combines product industry background that includes basic information, assessment information, structural information, and restriction information to achieve the multi-scenario of product LCA in different dimensions in a typical domain. The calculated mechanism of the dynamic power emission factor is built according to the service time and space dimensions. The proposed method forms an integrated environmental performance evaluation of household appliance (EPEHA) system. A software assessment and an optimization method are proposed to improve the EPEHA system. The results of this study show that these proposed methods can improve the timeliness and diversity of results analysis of product LCA in the field of household appliances in China. The universal data exchange format and simple operation interface of the EPEHA system enable people related to the product to quickly understand the environmental impact of the product in different scenarios, even if they lack green design knowledge and professional software training.
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Data availability
The datasets generated and analyzed during the current study are available from the supplementary material and the corresponding author on reasonable request.
Abbreviations
- LCA :
-
Life cycle assessment
- EPEHA :
-
Environmental performance evaluation of household appliances
- LCC :
-
Life cycle costing
- PEMS :
-
PIRA Environmental Management System
- LCI :
-
Life cycle inventory
- BEES :
-
Building for Environmental and Economic Sustainability
- NIST :
-
National Institute of Standards and Technology
- AHP :
-
Analytic hierarchy process
- B product :
-
Basic information of product
- B assessment :
-
Basic information of assessment
- B name :
-
Product name
- B serialnumber :
-
Serial number
- B quality :
-
Quality
- B manufacturingtime :
-
Manufacturing time
- B manufacturer :
-
Manufacturer
- B brief :
-
Brief introduction of manufacturer
- B purpose :
-
Assessment purpose
- B enterprise :
-
Assessment enterprise
- B time :
-
Assessment time
- B functionalunit :
-
Functional unit
- B cutoffcriteria :
-
Cut-off criteria
- B stageoflifecycle :
-
Life cycle stages that participate in the assessment
- F uselast :
-
Environmental impact factor of unit energy used in the last year of use stage
- l use :
-
Number of days the product is used in the first year of use stage
- l uselast :
-
Number of days the product is used in the last year of use stage
- EC rei :
-
Energy consumption of reclaimed process i
- F rei :
-
Environmental impact factor of unit energy used in reclaimed process i
- A rei :
-
Accessories consumption of reclaimed process i
- F reai :
-
Environmental impact factor of unit accessories used in reclaimed process i
- R j :
-
Mass/size of reclaimed material j
- F rj :
-
Environmental impact factor of unit reclaimed material j
- EF p :
-
Average emission factor of power grid in p province
- Em p :
-
Direct CO2 emissions from power generation in p province
- EF n :
-
Average CO2 emission factor of power grid in n province
- E imp,n,p :
-
Electricity sent from province n to province p
- EF k :
-
Average CO2 emission factor of power grid in country k
- E imp,k,p :
-
Electricity sent from country k to province p
- EF Grid,i :
-
Average CO2 emission factor of regional power grid i
- E imp,i,p :
-
Electricity sent from regional power grid i to province p
- E p :
-
Total annual power generation in p province
- Em n :
-
Direct CO2 emissions from power generation in n province
- E n :
-
Total annual power generation in n province
- \({\omega }_{qc}\) :
-
Weight of selected quality characteristics
- \({\omega }_{rs}\) :
-
Weight of selected related sub-characteristics in the selected quality characteristics
- E lc :
-
Life cycle environmental impact
- E raw :
-
Raw material acquisition environmental impact
- E pro :
-
Production environmental impact
- E tr :
-
Transport environmental impact
- E use :
-
Use environmental impact
- E re :
-
Recycling/reuse environmental impact
- E partx :
-
Environmental impact of part x
- G i :
-
Mass/size of substance i in the part
- F rawi :
-
Environmental impact factor of unit mass/size of substance i
- R partx :
-
Correction factor which compensates for the loss of substance and energy in the process of machining part x
- EC i :
-
Energy consumption of manufacturing process i
- F mani :
-
Environmental impact factor of unit energy used in manufacturing process i
- A i :
-
Accessories consumption of manufacturing process i
- F anci :
-
Environmental impact factor of unit mass/size of accessories used in manufacturing process i
- S i :
-
Distance of transport i
- T i :
-
Fuel consumption/energy consumption per unit distance of transport i
- F tri :
-
Environmental impact factor of unit fuel/energy used in transport i
- N i :
-
Quantity of product in transport i
- TG i :
-
Empty load fuel consumption /energy consumption per unit distance of transport i
- X i :
-
Consumption coefficient that used to calculate the consumption of carrying different weights of products
- EC ser :
-
Energy consumption of use stage
- F dyn :
-
Environmental impact factor of unit energy used in use stage
- P :
-
Product power
- H :
-
Daily working time
- l :
-
Service life
- F use :
-
Environmental impact factor of unit energy used in the first year of use stage
- \({\omega }_{e}\) :
-
Weight of evaluation indicators in selected related the sub-characteristics
- A :
-
Judgment matrix
- a ij :
-
Important comparison of indicator i and indicator j
- S :
-
Sum the rows of the normalized matrix
- \(\omega\) :
-
Indicator weight
- CI :
-
General consistency indicator
- RI :
-
Average random consistency indicator
- CR :
-
Consistency test coefficient
- \({\lambda }_{{\text{max}}}\) :
-
Maximum eigenvalue
- B :
-
Correlation matrix
- b ij :
-
Correlation coefficient
- GR :
-
Initial network
- V :
-
Node
- E :
-
Edge
- C :
-
Weight of edge
- TR :
-
Maximum spanning tree
- k i :
-
The comprehensive weight of each node
- \({\omega }_{i}\) :
-
Weight of the node i
- \({\omega }_{j}\) :
-
Weight of the node j
- \({r}_{i}\) :
-
Comparison value between the indicator represented by node i
- \({r}_{j}\) :
-
Comparison value between the indicator represented by node j
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Acknowledgements
We highly appreciate the assistance of all colleagues in the Institute of Green Design and Manufacturing Engineering at Hefei University of Technology.
Funding
This study is supported by the National Natural Science Foundation of China (Grant No. 51875156).
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All authors wrote the main manuscript text. Lei Zhang proposed the overall construction of this paper. Yu Zheng built the multi-module product life cycle analysis model. Shiwen Pan established software assessment and optimization method. Rui Jin and Junkai Huang developed EPEHA system. All authors reviewed the manuscript.
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Zhang, L., Zheng, Y., Jin, R. et al. Considering product life cycle characteristics and industry background in environmental impact analysis and application: a case study of a television. Environ Sci Pollut Res 31, 29334–29356 (2024). https://doi.org/10.1007/s11356-024-32999-3
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DOI: https://doi.org/10.1007/s11356-024-32999-3