A Framework for Environmental Performance Evaluation in Green Supply Chains Gabriel Alves Jr.

Summary Motivation Objectives Proposal Case Study Links References

Objectives Provide a Framework for EPE in GSCs –Component-based Models, Metrics, Tools Single model for EPE and Performance Evaluation –Products Flow –Dynamics of LCA Compare Environment, Performance and Costs trade-offs

Introduction Exergy –Energetic Efficiency (depends on the source and the system) –Allows comparing different energy sources Global Warming Potential (GWP) –Allows comparing different resources with the CO 2 environment impacts –Covers the destination and origin of resources

Evaluation of sustainability and performance metrics in supply chains with GSPNs Proposal Models Tools Metrics Framework

Environment Performance Indicators (EPI) Classification Proposal Sustainability Indicator Objective Subjective Objective Subjective Objective Subjective Environmental Economic Social Objective

Proposal Metrics –Graphical Schema –Exergy Energy Consumption –GWP Waste Energy consumption separately

Proposal Metrics (Performance) –Resources Utilization/Availability; –Stock Availability; –Pending orders; –Replenishment policies impacts; –Machine/trucks failure impacts;

Proposal Metrics (EPE) –Absolute/relative electricity consumption (kWh); –Absolute/relative fuel consumption classified by type (diesel, gas, ethanol…) (l, m 3 …); –Absolute/relative exergy consumption (J);

Proposal Metrics (EPE) –Absolute/relative waste classified by type (paper, ferrous, wood, organic…) and destination (composting, recycling, disposal); –Absolute/relative amount of CO2 emissions in transportation and manufacturing activities; –Absolute/relative amount of CO2eq (GWP) emissions.

Proposal Producer Intermediary Transport Final Consumer Models Components –Inbound, Outbound (Pull/Push) and Reverse –Manufacturing (Desrochers)

Models x Environment Parameters Proposal Element InputsOutputs Waste, CO 2 Resources, Energy Waste, CO 2 Resources, Energy WasteResources, Energy Waste, CO 2 Resources, Energy

Proposal Modeling Tool

Production Line Indicators Case Study IndicatorPhase 1Phase 2Phase 3System Machines Utilization 0, , , Max. Production (ton/h) 3, Production (ton/h)---3, Electricity (kWh)241,83390,7687,16719,75 Natural Gas (m3/h)0,00101,560,00101,56 Electricity/ton (kWh/ton)---213, Electricity/year (kWh) --- 1,87x10 6 Ch. Exergy/ton (kJ/ton)--- 6,34x10 6 Ch. Exergy/year (kJ)--- 5,55x10 10 tep/ton---0, tep/year---393,

Production Line Indicators Case Study

Production Line Indicators Case Study *Considered same machines efficiency independent of the fuel

Links Intergovernamental Panel on Climate Change (IPCC): United States Environmental Protection Agency (EPA): – Energy Information Administration (EIA, US): Department for Environment, Food and Rural Affairs (DEFRA, UK): Carbon Trust, UK: Ministério de Minas e Energia (MME, BR): Ministério de Ciência e Tecnologia (MCT, BR): World Energy Council: Green Peace: –

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