当前位置：
X-MOL 学术
›
J. Chem. Eng. Data
›
论文详情
Our official English website, www.x-mol.net, welcomes your
feedback! (Note: you will need to create a separate account there.)
Experimental Research on the Vapor Pressures of CaCl2–H2O and MgCl2–H2O as Working Fluids of Absorption Heat Transformers at High Temperature
Journal of Chemical & Engineering Data ( IF 2.0 ) Pub Date : 2021-11-04 , DOI: 10.1021/acs.jced.1c00397 Jielin Luo 1 , Ruirui Zheng 1 , Shaozhi Zhang 1 , Guangming Chen 1 , Qin Wang 1
Journal of Chemical & Engineering Data ( IF 2.0 ) Pub Date : 2021-11-04 , DOI: 10.1021/acs.jced.1c00397 Jielin Luo 1 , Ruirui Zheng 1 , Shaozhi Zhang 1 , Guangming Chen 1 , Qin Wang 1
Affiliation
|
Aqueous calcium chloride solution (CaCl2–H2O) and magnesium chloride solution (MgCl2–H2O) are regarded as potential working fluids of absorption heat transformers (AHTs) because of their characteristics of low corrosiveness. The vapor pressure of a working fluid is an important property for applications in absorption systems. However, current experimental data are mostly limited to temperature and concentration ranges, which are suitable for dehumidification systems, whose temperature requirement is always lower than 323.15 K. Thus, more accurate data of vapor pressures are anticipated. In this paper, the equilibrium vapor pressures of aqueous CaCl2 and MgCl2 solution were measured with the static method in the temperature range from 323.15 to 373.15 K. The mass fraction of CaCl2 varied from 0.1 to 0.5, and the mass fraction of MgCl2 varied from 0.05 to 0.3. The measured data were correlated with a common-used e–NRTL model, whose average absolute relative deviations (AARD) for CaCl2–H2O and MgCl2–H2O were 2.27 and 1.61%, respectively. The data were then correlated with a modified Antoine equation, and the AARD were reduced to 0.51 and 0.50%, respectively. The thermodynamic performance of CaCl2–H2O and MgCl2–H2O for the AHT were also estimated for a typical cycle. The results demonstrate that compared with the common-used LiBr–H2O, both CaCl2–H2O and MgCl2–H2O deliver lower circulation ratios with a coefficient of performance difference less than 2%, so their application prospects are illustrated.
中文翻译：
CaCl2-H2O和MgCl2-H2O作为吸收式换热器高温工作流体蒸气压的实验研究
氯化钙水溶液（CaCl 2 -H 2 O）和氯化镁水溶液（MgCl 2 -H 2 O）具有低腐蚀性的特点，被认为是吸收式热变压器（AHT）的潜在工作流体。工作流体的蒸气压是吸收系统应用的一个重要特性。然而，目前的实验数据大多局限于温度和浓度范围，这适用于除湿系统，其温度要求始终低于 323.15 K。因此，预计会有更准确的蒸气压数据。在本文中，CaCl 2和 MgCl 2水溶液的平衡蒸气压溶液在323.15~373.15 K的温度范围内采用静态法测定。CaCl 2的质量分数为0.1~0.5，MgCl 2的质量分数为0.05~0.3。测量数据与常用的 e-NRTL 模型相关联，其 CaCl 2 -H 2 O 和 MgCl 2 -H 2 O的平均绝对相对偏差 (AARD)分别为 2.27% 和 1.61%。然后将数据与修改后的 Antoine 方程相关联，AARD 分别降低到 0.51% 和 0.50%。CaCl 2 –H 2 O和MgCl 2 –H 2的热力学性能还估计了典型循环的 AHT 的 O。结果表明，与常用的 LiBr–H 2 O 相比，CaCl 2 –H 2 O 和 MgCl 2 –H 2 O 均具有较低的循环比，性能差异系数小于 2%，因此其应用前景插图。
更新日期：2021-12-09
中文翻译：
CaCl2-H2O和MgCl2-H2O作为吸收式换热器高温工作流体蒸气压的实验研究
氯化钙水溶液（CaCl 2 -H 2 O）和氯化镁水溶液（MgCl 2 -H 2 O）具有低腐蚀性的特点，被认为是吸收式热变压器（AHT）的潜在工作流体。工作流体的蒸气压是吸收系统应用的一个重要特性。然而，目前的实验数据大多局限于温度和浓度范围，这适用于除湿系统，其温度要求始终低于 323.15 K。因此，预计会有更准确的蒸气压数据。在本文中，CaCl 2和 MgCl 2水溶液的平衡蒸气压溶液在323.15~373.15 K的温度范围内采用静态法测定。CaCl 2的质量分数为0.1~0.5，MgCl 2的质量分数为0.05~0.3。测量数据与常用的 e-NRTL 模型相关联，其 CaCl 2 -H 2 O 和 MgCl 2 -H 2 O的平均绝对相对偏差 (AARD)分别为 2.27% 和 1.61%。然后将数据与修改后的 Antoine 方程相关联，AARD 分别降低到 0.51% 和 0.50%。CaCl 2 –H 2 O和MgCl 2 –H 2的热力学性能还估计了典型循环的 AHT 的 O。结果表明，与常用的 LiBr–H 2 O 相比，CaCl 2 –H 2 O 和 MgCl 2 –H 2 O 均具有较低的循环比，性能差异系数小于 2%，因此其应用前景插图。
京公网安备 11010802027423号