产品生命周期评估计算器
使用产品生命周期评估计算器分析产品从原料到废弃全过程的环境影响。涵盖制造、运输、使用和回收各阶段的碳排放和资源消耗，支持可持续产品设计。
Total Lifecycle CO2
133.0 kg CO2
Total Lifecycle CO2 vs Product Lifespan
公式
How to Calculate Product Lifecycle Impact
A lifecycle assessment (LCA) evaluates environmental impact from cradle to grave.
Lifecycle Stages
1. Raw materials: Extraction and processing 2. Manufacturing: Assembly and production 3. Transportation: Distribution to consumer 4. Use phase: Energy consumed during use 5. End of life: Disposal, recycling, or landfill
Formula
Total CO2 = Materials + Manufacturing + Transport + (Annual Use * Years) + End of Life
计算示例
A laptop with 10kg materials, 15kg manufacturing, 5kg transport, 20kg/year use, 5-year life, 3kg end-of-life.
- 01Use phase: 20 * 5 = 100 kg CO2
- 02Total: 10 + 15 + 5 + 100 + 3 = 133 kg CO2
- 03Annualized: 133 / 5 = 26.6 kg CO2/year
- 04Use phase share: 100 / 133 = 75.2%
常见问题
What is a lifecycle assessment?
A lifecycle assessment (LCA) is a systematic evaluation of environmental impacts at each stage of a product life from raw materials to disposal. It helps identify where the biggest impacts occur.
Which lifecycle stage has the most impact?
It varies by product. For electronics and appliances, the use phase dominates. For clothing and furniture, raw materials and manufacturing are larger. For food, production dominates.
How does extending product life help?
Doubling a product lifespan nearly halves the annualized embodied carbon. This is why repair, refurbishment, and durability are key sustainability strategies.