| 应用于低温加热的肉豆蔻酸和硬脂酸共熔混合物的储热特性 |
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| 引用本文： | Ahmet ,Sari, ,Kamil ,Kaygusuz. 应用于低温加热的肉豆蔻酸和硬脂酸共熔混合物的储热特性[J]. 中国化学工程学报, 2006, 14(2): 270-275. DOI: 10.1016/S1004-9541(06)60070-0 |
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| 作者姓名： | Ahmet Sari Kamil Kaygusuz |
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| 作者单位： | [1]Department of Chemistry, Gaziosmanpasa University, 60240 Tokat, Turkey [2]Department of Chemistry, Karadeniz Technical University, 61100 Trabzon, Turkey |
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| 基金项目： | Supported by the Research Fund of Gaziosmanpasa University （No.2003/42） ACKN0WLEDGEMENTS The authors would like to thank Gaziosmanpasa University Research Fund for the financial support （No. 2003/42）. The authors also thank Prof. Dr. Teoman Tincer and expert Sevim Ulupmar in Middle East Technical University for their help in the DSC analysis. |
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| 摘 要： | Stearic acid （67.83℃） and myristic acid （52.32℃） have high melting temperatures that can limit their use as phase change material （PCM） in low temperature solar heating applications such as solar space and greenhouse heating in regard to climatic requirements. However, their melting temperatures can be adjusted to a suitable value by preparing a eutectic mixture of the myristic acid （MA） and the stearic acid （SA）. In the present study, the thermal analysis based on differential scanning calorimetry （DSC） technique shows that the mixture of myristic acid （MA） and stearic acid （SA） in the respective composition （by mass） of 64% and 36% forms a eutectic mixture having melting temperature of 44.13℃ and the latent heat of fusion of 182.4J.g^-1. The thermal energy storage characteristics of the MA-SA eutectic mixture filled in the annulus of two concentric pipes were also experimentally established. The heat recovery rate and heat charging/discharging fractions were determined with respect to the change in the mass flow rate and the inlet temperature of heat transfer fluid. Based on the results obtained by DSC analysis and by the heat charging/discharging processes of the PCM, it can be concluded that the MA-SA eutectic mixture is a potential material for low temperature thermal energy storage applications in terms of its thermo-physical and thermal characteristics.
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| 关 键 词： | 低温加热 肉豆蔻酸 硬脂酸 共熔混合物 储热特性 差示扫描量热法 |
| 收稿时间： | 2005-02-02 |
| 修稿时间： | 2005-02-022006-01-10 |
Thermal Energy Storage Characteristics of Myristic and Stearic Acids Eutectic Mixture for Low Temperature Heating Applications |
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| Ahmet Sari,Kamil Kaygusuz. Thermal Energy Storage Characteristics of Myristic and Stearic Acids Eutectic Mixture for Low Temperature Heating Applications[J]. Chinese Journal of Chemical Engineering, 2006, 14(2): 270-275. DOI: 10.1016/S1004-9541(06)60070-0 |
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| Authors: | Ahmet Sari Kamil Kaygusuz |
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| Affiliation: | Department of Chemistry, Gaziosmanpasa University, 60240 Tokat, Turkey Department of Chemistry, Karadeniz Technical University, 61100 Trabzon, Turkey |
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| Abstract: | Stearic acid (67.83℃) and myristic acid (52.32℃) have high melting temperatures that can limit their use as phase change material (PCM) in low temperature solar heating applications such as solar space and greenhouse heating in regard to climatic requirements. However, their melting temperatures can be adjusted to a suitable value by preparing a eutectic mixture of the myristic acid (MA) and the stearic acid (SA). In the present study, the thermal analysis based on differential scanning calorimetry (DSC) technique shows that the mixture of myristic acid (MA) and stearic acid (SA) in the respective composition (by mass) of 64% and 36% forms a eutectic mixture having melting temperature of 44.13℃ and the latent heat of fusion of 182.4J.g-1. The thermal energy storage characteristics of the MA-SA eutectic mixture filled in the annulus of two concentric pipes were also experimentally established. The heat recovery rate and heat charging/discharging fractions were determined with respect to the change in the mass flow rate and the inlet temperature of heat transfer fluid. Based on the results obtained by DSC analysis and by the heat charging/discharging processes of the PCM, it can be concluded that the MA-SA eutectic mixture is a potential material for low temperature thermal energy storage applications in terms of its thermo-physical and thermal characteristics. |
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| Keywords: | eutectic mixture myristic and stearic acids phase change material thermal energy storage differential scanning calorimetry |
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