为客观评价建筑外墙保温板的环境影响效应,基于LCA(Life-Cycle Assessment)理论与方法对聚苯乙烯挤塑板和岩棉板两种主流保温板在生产、使用、拆除3个阶段的能源、资源消耗进行分析和统计,通过DEST-C建筑能耗分析软件对假定建筑模型在...为客观评价建筑外墙保温板的环境影响效应,基于LCA(Life-Cycle Assessment)理论与方法对聚苯乙烯挤塑板和岩棉板两种主流保温板在生产、使用、拆除3个阶段的能源、资源消耗进行分析和统计,通过DEST-C建筑能耗分析软件对假定建筑模型在使用外墙保温材料前后取暖、制冷过程中的能耗状况进行计算,进而对比得出上述两种建筑保温板的节能效果。将其全生命周期中涉及的各类能源、资源消耗进行分类,结合相应能源、资源在生产、使用过程中的污染物排放数据计算得出聚苯乙烯挤塑板和岩棉板全生命周期的环境影响排放清单。依据WTP(Willingness To Pay)理论,从社会支付意愿的角度来衡量环境影响程度,在环境税费理论上,结合消费物价指数计算得出具有时效性的污染物单位当量环境影响货币价值,将前两项工作中获得的排放数据代入进行加权计算。结果表明,建筑外墙保温板在生产过程中大量消耗能源是造成保温板环境负影响的主要原因,其次是在拆除后难以回收利用而浪费大量土地进行掩埋,但在使用阶段产生的大量环境正影响创造了显著的环境价值。展开更多
In order to improve the reliability of the power system and provide uninterrupted power to the consumer, automatic reclosing (ARC) devices are often used in overhead power lines. On top of that, the condition of short...In order to improve the reliability of the power system and provide uninterrupted power to the consumer, automatic reclosing (ARC) devices are often used in overhead power lines. On top of that, the condition of short-circuit elimination or removal during ARC recloser depends on many random factors. In this article, the number of outages of 110 kV overhead lines in the Khangai region of Mongolia was studied, and the statistics of ARC device operation were compared with international standards. Also, from the works produced by scientists from foreign countries, the development level and innovative trends of ARC devices were compared and studied, and the opportunity to introduce them to Mongolia’s grid system was sought. Furthermore, the 110 kV transmission lines outage and the operation of the ARC devices installed in the Khangai region of Mongolia were studied. Hence, the average operation success rate of the ARC device in the last ten years was 76%. It was also found that the number of outages of 110 kV power lines is 8 per year on average, which is 2 - 3 times higher than the international norm. Eventually, the power grid scheme of the Khangai region, especially the Bulgan-Murun 110 kV distribution network, was modelled by Digsilent Powerfactory by including the features of Mongolia’s power transmission network, and the operation of the model was checked by the load flow function of the software.展开更多
文摘为客观评价建筑外墙保温板的环境影响效应,基于LCA(Life-Cycle Assessment)理论与方法对聚苯乙烯挤塑板和岩棉板两种主流保温板在生产、使用、拆除3个阶段的能源、资源消耗进行分析和统计,通过DEST-C建筑能耗分析软件对假定建筑模型在使用外墙保温材料前后取暖、制冷过程中的能耗状况进行计算,进而对比得出上述两种建筑保温板的节能效果。将其全生命周期中涉及的各类能源、资源消耗进行分类,结合相应能源、资源在生产、使用过程中的污染物排放数据计算得出聚苯乙烯挤塑板和岩棉板全生命周期的环境影响排放清单。依据WTP(Willingness To Pay)理论,从社会支付意愿的角度来衡量环境影响程度,在环境税费理论上,结合消费物价指数计算得出具有时效性的污染物单位当量环境影响货币价值,将前两项工作中获得的排放数据代入进行加权计算。结果表明,建筑外墙保温板在生产过程中大量消耗能源是造成保温板环境负影响的主要原因,其次是在拆除后难以回收利用而浪费大量土地进行掩埋,但在使用阶段产生的大量环境正影响创造了显著的环境价值。
文摘In order to improve the reliability of the power system and provide uninterrupted power to the consumer, automatic reclosing (ARC) devices are often used in overhead power lines. On top of that, the condition of short-circuit elimination or removal during ARC recloser depends on many random factors. In this article, the number of outages of 110 kV overhead lines in the Khangai region of Mongolia was studied, and the statistics of ARC device operation were compared with international standards. Also, from the works produced by scientists from foreign countries, the development level and innovative trends of ARC devices were compared and studied, and the opportunity to introduce them to Mongolia’s grid system was sought. Furthermore, the 110 kV transmission lines outage and the operation of the ARC devices installed in the Khangai region of Mongolia were studied. Hence, the average operation success rate of the ARC device in the last ten years was 76%. It was also found that the number of outages of 110 kV power lines is 8 per year on average, which is 2 - 3 times higher than the international norm. Eventually, the power grid scheme of the Khangai region, especially the Bulgan-Murun 110 kV distribution network, was modelled by Digsilent Powerfactory by including the features of Mongolia’s power transmission network, and the operation of the model was checked by the load flow function of the software.
