硝酸熔盐在土壤中的泄漏迁移实验
发布时间:2018-03-10 16:00
本文选题:太阳能利用 切入点:硝酸熔盐 出处:《工程热物理学报》2017年06期 论文类型:期刊论文
【摘要】:硝酸盐作为传热蓄热介质被广泛应用于太阳能热发电系统中,但在特殊情况下硝酸盐会从系统中泄漏并造成环境污染。本文研究了高温硝酸熔盐泄漏在土壤内部的迁移情况,并探究了对熔盐在石英砂中迁移渗透的影响因素。研究发现初始泄漏温度越高,熔盐在石英砂中的冷却结块后的中心厚度越大,四周的渗透深度也越大,但直径会越小;而泄漏高度越高,熔盐在石英砂中的冷却结块厚的中心厚度越大,熔盐的水平扩散直径越小,边缘厚度也越薄。
[Abstract]:Nitrate is widely used as a heat transfer and heat storage medium in solar thermal power generation system. However, nitrate can leak from the system and cause environmental pollution under special circumstances. In this paper, the leakage of high temperature nitric acid molten salt in the soil is studied. It is found that the higher the initial leakage temperature, the greater the central thickness of molten salt after cooling and caking in quartz sand, and the greater the permeation depth is, but the smaller the diameter is. The higher the leakage height, the greater the central thickness of cooling agglomeration thickness of molten salt in quartz sand, the smaller the horizontal diffusion diameter of molten salt and the thinner the edge thickness.
【作者单位】: 中山大学工学院;
【基金】:国家自然科学基金资助项目(No.U51436009,No.U51476190) 国家科技支撑计划课(No.U2014BAA01B01) 中央高校基本科研业务费专项资金
【分类号】:X53
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本文编号:1594043
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