CaCl2-LiBr-LiNO3-KNO3/H2O工质对的热物性和腐蚀性

doi:10.12034/j.issn.1009-606X.217382

过程工程学报 ›› 2018, Vol. 18 ›› Issue (4): 764-768.DOI: 10.12034/j.issn.1009-606X.217382

CaCl₂-LiBr-LiNO₃-KNO₃/H₂O工质对的热物性和腐蚀性

李娜1，罗春欢1,2，苏庆泉1,2?

1. 北京科技大学能源与环境工程学院，北京 100083
2. 北京科技大学节能与环保北京高校工程研究中心，北京 100083

收稿日期:2017-11-06 修回日期:2017-12-01 出版日期:2018-08-22 发布日期:2018-08-15
通讯作者: 苏庆泉 suqingquan@ustb.edu.cn
基金资助:
国家自然科学基金青年项目;中国博士后科学基金;高校基本科研业务费

Thermophysical properties and corrosivity of CaCl₂-LiBr-LiNO₃-KNO₃/H₂O working pair

Na LI1, Chunhuan LUO1,2, Qingquan SU1,2*

1. School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, China
2. Beijing Engineering Research Center for Energy Saving and Environmental Protection, University of Science and Technology Beijing,
Beijing 100083, China

Received:2017-11-06 Revised:2017-12-01 Online:2018-08-22 Published:2018-08-15
Contact: SU Qing-quan suqingquan@ustb.edu.cn

摘要/Abstract

摘要： The new working pair of CaCl2?LiBr?LiNO3?KNO3 (mass ratio 16.2:2:2:1)/H2O was systematically evaluated in terms of the crystallization temperature and the saturated vapor pressure. The corrosion rates of the carbon steel, 316L stainless steel and copper in CaCl2?LiBr?LiNO3?KNO3/H2O were measured with a weight loss method. The results showed that under the same refrigeration conditions, the temperature required for collecting solar energy or the generation temperature of CaCl2?LiBr?LiNO3? KNO3/H2O for a single-stage absorption refrigeration cycle decreases by 6.2℃ comparing with LiBr/H2O. The corrosion rates of 316L and copper are low enough for practical applications.

关键词: 太阳能, 吸收式制冷, 工质对, 结晶温度, 饱和蒸气压

Abstract: 提出CaCl2?LiBr?LiNO3?KNO3(质量比16.2:2:2:1)/H2O新型工质对，测定了其结晶温度和饱和蒸汽压，并与LiBr/H2O进行比较，采用浸泡法测定了碳钢、316L不锈钢和紫铜在CaCl2?LiBr?LiNO3?KNO3/H2O中的腐蚀速率. 结果表明，CaCl2?LiBr? LiNO3?KNO3/H2O作为工质对用于太阳能单级吸收式制冷循环时，在相同制冷工况下，其太阳能集热温度比LiBr/H2O工质对降低6.2℃，316L不锈钢和紫铜的腐蚀性非常小，可满足实际工程应用要求.

Key words: solar energy, absorption refrigeration, working pair, crystallization temperature, saturated vapor pressure

李娜罗春欢苏庆泉. CaCl₂-LiBr-LiNO₃-KNO₃/H₂O工质对的热物性和腐蚀性[J]. 过程工程学报, 2018, 18(4): 764-768.

Na LI Chunhuan LUO Qingquan SU. Thermophysical properties and corrosivity of CaCl₂-LiBr-LiNO₃-KNO₃/H₂O working pair[J]. Chin. J. Process Eng., 2018, 18(4): 764-768.

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CaCl₂-LiBr-LiNO₃-KNO₃/H₂O工质对的热物性和腐蚀性

Thermophysical properties and corrosivity of CaCl₂-LiBr-LiNO₃-KNO₃/H₂O working pair

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