本文選題：太陽能利用　切入點：硝酸熔鹽　出處：《工程熱物理學報》2017年06期 　論文類型：期刊論文

【摘要】：硝酸鹽作為傳熱蓄熱介質(zhì)被廣泛應用于太陽能熱發(fā)電系統(tǒng)中,但在特殊情況下硝酸鹽會從系統(tǒng)中泄漏并造成環(huán)境污染。本文研究了高溫硝酸熔鹽泄漏在土壤內(nèi)部的遷移情況,并探究了對熔鹽在石英砂中遷移滲透的影響因素。研究發(fā)現(xiàn)初始泄漏溫度越高,熔鹽在石英砂中的冷卻結(jié)塊后的中心厚度越大,四周的滲透深度也越大,但直徑會越小;而泄漏高度越高,熔鹽在石英砂中的冷卻結(jié)塊厚的中心厚度越大,熔鹽的水平擴散直徑越小,邊緣厚度也越薄。
[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.
【作者單位】： 中山大學工學院;
【基金】：國家自然科學基金資助項目(No.U51436009,No.U51476190) 國家科技支撐計劃課(No.U2014BAA01B01) 中央高�；究蒲袠I(yè)務費專項資金
【分類號】：X53
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本文編號：1594043