發(fā)布時(shí)間：2018-02-08 19:37

  本文關(guān)鍵詞： 太陽能 光熱發(fā)電 熔鹽 儲(chǔ)熱傳熱　出處：《可再生能源》2017年11期 　論文類型：期刊論文

【摘要】：為了獲得聚光型太陽能熱發(fā)電用的更低熔點(diǎn)熔融鹽儲(chǔ)熱傳熱材料,采用材料摻雜改性方法,在Li NO3-KNO3-Ca(NO3)2三元低熔點(diǎn)共晶混合鹽中加入Na Cl,制備了Li NO3-KNO3-Ca(NO3)2-Na Cl新混合熔鹽。對新混合熔鹽分別進(jìn)行了DSC熔點(diǎn)測定、TG動(dòng)態(tài)熱穩(wěn)定測定、48 h靜態(tài)熱穩(wěn)定測試和熔鹽液態(tài)密度測定。DSC實(shí)驗(yàn)結(jié)果表明,新混合熔鹽的熔點(diǎn)為109.3℃,比原三元混合熔鹽的熔點(diǎn)(117.2℃)降低了7.9℃,對應(yīng)的相變潛熱為48.6 J/g;TG動(dòng)態(tài)熱穩(wěn)定和靜態(tài)熱穩(wěn)定實(shí)驗(yàn)表明,新混合熔鹽的熱穩(wěn)定溫度為500℃,比原三元混合熔鹽的熱穩(wěn)定溫度(450℃)高50℃;液態(tài)密度實(shí)驗(yàn)發(fā)現(xiàn),該混合熔鹽在180~500℃時(shí)的液態(tài)密度為1.7~1.9g/cm3。
[Abstract]:In order to obtain lower melting point molten salt heat storage heat transfer material for concentrated solar thermal power generation, the material doping modification method was adopted. The new mixed molten salt of Li NO3-KNO3-Ca(NO3)2-Na Cl was prepared by adding NaCl into Li NO3-KNO3-Ca(NO3)2 ternary low melting point eutectic mixed salt. The new mixed molten salt was measured by DSC melting point measurement and TG dynamic thermal stability measurement for 48 h, and the liquid density of molten salt was measured. DSC results show that, The melting point of the new mixed molten salt is 109.3 鈩，

本文編號(hào)：1496108