Experimental Study on SDS Enhancement of CO2 Hydrate Cool Storage System Based on Compression Refrigeration Cycle
Based on the principle of vapor compression circle, this paper describes the formation and cool storage characteristics of CO2 hydrates in SDS solutions with different filling pressures (3.5, 3.6, 3.7, 3.8, 3.9, and 4.0 MPa) and SDS of different mass concentrations (0.3, 0.5, 0.7, and 0.9 g/L) using...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | zho |
| Published: |
Journal of Refrigeration Magazines Agency Co., Ltd.
2021-01-01
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| Series: | Zhileng xuebao |
| Subjects: | |
| Online Access: | http://www.zhilengxuebao.com/thesisDetails#10.3969/j.issn.0253-4339.2021.01.140 |
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| Summary: | Based on the principle of vapor compression circle, this paper describes the formation and cool storage characteristics of CO2 hydrates in SDS solutions with different filling pressures (3.5, 3.6, 3.7, 3.8, 3.9, and 4.0 MPa) and SDS of different mass concentrations (0.3, 0.5, 0.7, and 0.9 g/L) using a water-cooled direct contact cool storage system. The experimental data were used to calculate the cool storage capacity, cool storage rate, and CO2 hydrate formation mass. The results show that, in comparison with the case of solutions without SDS, the pre-cooling time and cool storage time of the system were shortened in SDS solutions with different mass concentrations, and the hydrate formation mass, total cool storage capacity, and average cool storage rate increased. With the continuous increase in the charging pressure, the cool storage performance of the system was also strengthened. When the filling pressure was 4.0 MPa and the SDS solution mass concentration was 0.5 g/L, the pre-cooling time (5.58 min) and the cool storage time (10.92 min) were the shortest. At this time, the total cool storage capacity (4 021.2 kJ), latent heat cool storage capacity (2 476.8 kJ), CO2 hydrate formation mass (4.95 kg), and average cool storage rate (6.14 kW) of the system reached the maximum value, and the cool storage characteristics of the system attained the best condition. The study has shown that SDS has an obvious effect on the CO2 hydrate cool storage characteristics of this system. |
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| ISSN: | 0253-4339 |