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首页> 外文期刊>International Journal of Environmental Impacts: Management, Mitigation and Recovery >DISTRICT HEATING SYSTEM: EVALUATION OF ENVIRONMENTAL AND ECONOMIC ASPECTS
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DISTRICT HEATING SYSTEM: EVALUATION OF ENVIRONMENTAL AND ECONOMIC ASPECTS

机译：集中供热系统:评价环境和经济方面

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摘要

With the need for limiting pollutant emissions, careful management of energy plants should be considered to reduce the footprints that can be caused by these systems. Advantages of district heating (DH) systems have been linked to a decrease in local and global emissions, centralized heat production located outside urban centres, possible utilization of renewable heat sources. District heating, consisting of the distribution of hot water by means of underground networks for the buildings' heating and sanitary water, is an ever-expanding technology that allows the optimization of energy resources, with positive consequences in terms of both economic savings and environmental impacts. The aim of this work is to analyse the district heating system from an environmental point of view, in way to realize a general procedure of evaluation. To this end, the Italian city of Turin is taken as case study. Turin has long been subject to high concentration levels of pollutants, especially NO_x and particulate. The environmental compatibility of extending the district heating network is evaluated. Two different tools are used: first, the environmental balance is defined to perform an evaluation of the flux modification at the emission sources; secondly, the atmospheric impacts of emissions are estimated using CALPUFF dispersion model. The results show a future reduction in overall NO_x emission, as well as a reduction of ground level average NO_x concentration ranging between 0.2 and 4 μg/m~3. This study provides important information on the effects of a change of the energy configuration on air quality in an urban area. The proposed comprehensive methodology is applicable for other similar cases.
机译：需要限制污染物的排放,能源植物应该认真管理可以考虑减少脚印由于这些系统。加热(DH)系统有关本地和全球温室气体排放减少,集中的热量生产以外的城市中心,尽可能利用可再生热量来源。通过地下热水的分布网络为建筑的采暖和卫生水,是一个不断扩张的技术允许能源资源的优化积极方面的经济后果储蓄和环境影响。这项工作是分析区域供热从环境的角度来看,系统方法来实现评价的一般程序。为此,意大利的都灵作为案例研究。高浓度的污染物水平,特别是NO_x和微粒。扩展的环境兼容性集中供热网络评估。使用不同的工具:第一,环境平衡进行定义评估的通量修正排放源;使用CALPUFF排放估计的影响分散模型。减少总体NO_x排放,以及减少地面平均NO_x浓度介于0.2和4μg / m ~ 3。这项研究提供了重要的信息一个变化的能源配置的影响在市区空气质量。全面的方法适用于其他类似的案例。

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