(42寸液晶電視價(jià)格)42寸液晶電視導(dǎo)購(gòu)指南(編輯修改稿)
2025-02-04 19:59 本頁(yè)面
【文章內(nèi)容簡(jiǎn)介】 to the incineration of plastic wastes. Nevertheless, this option also uses more resources and emits a larger quantity of greenhouse gases. n The separation of plastics for mechanical recycling is more effective alternative, because it consumes fewer energy and resources, as well as has a lower environmental impact on global warming.Source: Matsushita Eco Technology Center (METEC)Available from inter: Conventional Recycling System for TV sets Three alternatives are being considered when dealing with plastic wastes: 1. energy recovery (also known as thermal recycling), . direct incineration of plastic wastes for energy recovery2. mechanical recycling (also known as material recycling), . the method by which plastic wastes are recycled into new resources without affecting the basic structure of the material。 1. feedstock recycling (also known as chemical recycling), . the technique that break down polymers into their constituent monomers, which in turn can be used again in refineries or petrochemical and chemical production.Required Purity of Sorted Plastics for Reuse (courtesy of KINKI KOGYO Co. Ltd., Japan) Reuse of plastics in circulating system as low grade plastics : % Reuse of plastics in circulating system as virgin plastics : % Reuse of plastics for agricultural, horticultural industry, etc. : % Use of plastics as oxidant in blast furnaces : % (PVC impurity) Life Cycle Assessment Framework(Source: LCA, ISO 14040)Bond’s Method: SizereductionWi = kWh/tDP = mmDF = mmProduction of 1 kg PS(Source: JEMAILCA Online Database)Production of 1 kg PVC(Source: JEMAILCA Online Database)Production of 1 kg PE(Source: JEMAILCA Online Database)Production of 1 kWh Electricity(Source: JEMAILCA Online Database)Production of a TV set(Sources: a. JEMAILCA Online Database。 b. Murakami, 2023)Matrix B of Environmental interventions Demand vector, fTechnological Matrix, AStructure of LCA modelINPUT (product flow) x (scaling parameter) = (final demand)After choosing the FINAL DEMAND of the product, the simplest UNIT PROCESS can be written as follows:OUTPUT(environmental flow) x (scaling parameter) = (environmental intervention)Ref.: Leontief, 1970 (Winner of Nobel Prize in 1973)Technology matrix。AFinal demand vector。fEnvironmental intervention matrix。B Inventory。g??ProcessInput ( ) Output ( + )Inventory dataProcess 1… … … … …Process nTechnological parametersEmission from the processLinear programmingProduct flow, aSca
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