Department of Mechanical Engineering, Jadavpur University, Kolkata 700032, India.
Department of Mechanical Engineering, Jadavpur University, Kolkata 700032, India.
Bioresour Technol. 2017 Mar;227:256-265. doi: 10.1016/j.biortech.2016.12.067. Epub 2016 Dec 23.
Multi-generation or polygeneration is considered to be a potential sustainable energy solution. To assess environmental sustainability of multi-generation, life cycle assessment (LCA) is a useful tool. In this paper, environmental impact of polygeneration using an agro waste (rice straw) is assessed by LCA. Then it is compared with stand alone conventional plants with same utility outputs. Power, ethanol, heating and cooling are utility outputs of the polygeneration plant. System boundary for this polygeneration is defined for surplus biomass only. Exergy based allocation method is used for this analysis. Results of LCA are shown through both mid-point and end-point indicators. Results indicate that polygeneration with surplus rice straw is more environment-friendly than conventional stand-alone generation of same utilities.
多代或多联产被认为是一种有潜力的可持续能源解决方案。为了评估多联产的环境可持续性，生命周期评估（LCA）是一种有用的工具。在本文中，通过 LCA 评估了利用农业废弃物（稻草）的多联产的环境影响。然后将其与具有相同公用事业产出的独立传统工厂进行比较。电力、乙醇、供热和供冷是多联产工厂的公用事业产出。该多联产系统的边界仅定义为剩余生物质。本文分析采用基于火用的分配方法。LCA 的结果通过中点和终点指标来表示。结果表明，利用剩余稻草的多联产比具有相同公用事业的传统独立发电更环保。
