以单一脂肪酸、脂肪酸/石蜡混合相变材料和脂肪酸/石蜡/石墨复合相变材料为腐蚀介质,研究了相变材料对不锈钢的腐蚀性能。研究结果显示,脂肪酸、石蜡类相变材料及添加石墨后的复合相变材料对不锈钢的腐蚀性均很小,其中硬脂酸系列的相变材料腐蚀性最小,可作为不锈钢制相变储热换热装置的理想储能介质。
The corrosivities of fatty acids,fatty acid/paraffin and fatty acid/paraffin/graphite composite phase change materials (PCMs) toward stainless steels were investigated.The results showed that stainless steels only suffered slight corrosions in the mediums of fatty acids,paraffin PCMs and graphite composite PCMs.Among of them,the corrosivity of stearic acid PCMs toward stainless steel was the least,which was expected to be an ideal energy storage medium for regenerative phase change heat exchangers made of stainless steel.
[1] 鲍泽龙,张蕊,陶曼飞,等.Fe-Cr-Ni合金在固-液循环NaCl-MgCl2相变储能介质中腐蚀行为研究[J].太阳能学报,2020,41(3):206-213.
[2] 陈宏霞,刘霖,肖红洋,等.气液相变换热过程中界面腐蚀的基础研究进展[J].化工进展,2019,38(12):5225-5237.
[3] 李奥,谢文玲,白直真,等.相变循环参数对304不锈钢耐腐蚀性的影响[J].广州化工,2017,45(10):77-79.
[4] 曹海莲,胡高浩,胡永康,等.Al对Ni-10%Fe合金在相变储热介质NaCl-MgCl2中腐蚀行为的影响[J].材料保护,2020,53(3):27-31.
[5] Zhao T,Munis A,Rehman A U,et al.Corrosion behavior of aluminum in molten hydrated salt phase change materials for thermal energy storage[J].Materials Research Express,2020,7(1):15529.
[6] Cellat K,Tezcan F,Beyhan B,et al.A comparative study on corrosion behavior of rebar in concrete with fatty acid additive as phase change material[J].Construction & Building Materials,2017,143(7):490-500.
[7] Ostr M,BantováS,Struhala K.Compatibility of phase change materials and metals:experimental evaluation based on the corrosion rate[J].Molecules,2020,25(12):2823.
[8] Browne M C,Boyd E,Mccormack S J.Investigation of the corrosive properties of phase change materials in contact with metals and plastic[J].Renewable Energy,2017,108(8):555-568.
[9] Vasu A,Hagos F Y,Noor M M,et al.Corrosion effect of phase change materials in solar thermal energy storage application[J].Renewable and Sustainable Energy Reviews,2017,76:19-33.
[10] Marin P E,Ushak S,De Gracia A,et al.Assessing corrosive behaviour of commercial phase change materials in the 21-25 degrees C temperature range[J].Journal of Energy Storage,2020,32:11.
[11] Huang Z W,Luo Z G,Gao X N,et al.Investigations on the thermal stability,long-term reliability of LiNO3/KCl-expanded graphite composite as industrial waste heat storage material and its corrosion properties with metals-ScienceDirect[J].Applied Energy,2017,188(2):521-528.
基金资助
北京学者计划项目资助(2015NO.022)
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