Query：
学者姓名：刘曦
Refining：
Year
Type
Indexed by
Source
Complex
Co-
Language
Clean All
Abstract ：
性能良好的工质是超高温热泵技术开发的关键之一。针对供热温度大于140℃的超高温热泵，根据优势互补的原则，提出了四种性非共沸混合工质MB1、MB2、MB3、MB4，并在蒸发温度50℃、70℃与90℃，冷凝温度140℃-160℃工况下对这四种混合工质的循环性能及最佳配比进行了研究。结果表明，苯，环戊烷，甲苯，丙酮及R13336mzz(Z)可作为该供热温度下热泵的混合工质的组分；四种混合工质性能良好，其中，MB2的循环性能在所提出的混合工质中最优，在蒸发温度50℃，冷凝温度160℃工况下，COP达2.4，?效率达58.9%；在蒸发温度90℃，冷凝温度160℃工况下，COP达4，?效率达62.6%。其它混合工质较主要成分苯的循环性能均有提升，MB4较苯可燃性降低。
Keyword ：
供热温度 供热温度 性能系数 性能系数 ?效率 ?效率 混合工质 混合工质 超高温热泵 超高温热泵
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | 陈曦 , 刘曦 , 裴依豪 et al. 超高温热泵混合工质性能研究 [J]. | 制冷 , 2024 , 43 (01) : 31-37 . |
| MLA | 陈曦 et al. "超高温热泵混合工质性能研究" . | 制冷 43 . 01 (2024) : 31-37 . |
| APA | 陈曦 , 刘曦 , 裴依豪 , 李学来 . 超高温热泵混合工质性能研究 . | 制冷 , 2024 , 43 (01) , 31-37 . |
| Export to | NoteExpress RIS BibTex |
Version ：
Abstract ：
This study presents a comprehensive investigation of centrifugal desalination of sea ice and the production of slurry ice from supercooled water. A mathematical model for centrifugal desalination was established and validated through experiments. The results displayed a high level of accuracy in both the theoretical and experimental analyses, with an average goodness of fit of approximately 0.94. An experimental platform is established to produce supercooled water, using different types of water as ice-making solutions. The slurry ice is more suitable for centrifugal desalination than solid ice, and it can be obtained by disrupting the supercooled state of supercooled water, with finer ice crystals produced through ultrasonic supercooling release compared to natural methods. Decreasing the refrigerant temperature benefits enhancing the supercooling degree while compromising the stability of supercooled water generation. The stability is investigated with variations in refrigerant temperature to generate a solution temperature 2.0 degrees C higher than the refrigerant. When the supercooling degree is 1.0 degrees C, all of these solutions have a high stability of 80 %, however, it becomes worse as the supercooling degree increases. At the supercooling degree of 2.0 degrees C, saltwater has the highest stability of only 35 %, and seawater has the lowest stability of 15% due to its complicated composition. This phenomenon also reveals that conducting experiments using saline solution instead of seawater can lead to significant misleading effects. Additionally, the impact of flow rate on the supercooling degree is investigated, showing a minor influence.
Keyword ：
Centrifugal desalination Centrifugal desalination Freezing desalination Freezing desalination Slurry ice Slurry ice Supercooled water Supercooled water
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | Lan, Wenchao , Liu, Xi , Xie, Meina et al. Theoretical and experimental analysis of sea ice centrifugal desalination and supercooled water production for slurry ice [J]. | SEPARATION AND PURIFICATION TECHNOLOGY , 2024 , 352 . |
| MLA | Lan, Wenchao et al. "Theoretical and experimental analysis of sea ice centrifugal desalination and supercooled water production for slurry ice" . | SEPARATION AND PURIFICATION TECHNOLOGY 352 (2024) . |
| APA | Lan, Wenchao , Liu, Xi , Xie, Meina , Ye, Kai , Chen, Longxiang . Theoretical and experimental analysis of sea ice centrifugal desalination and supercooled water production for slurry ice . | SEPARATION AND PURIFICATION TECHNOLOGY , 2024 , 352 . |
| Export to | NoteExpress RIS BibTex |
Version ：
Abstract ：
In this study, the LNG cold energy recovery combined with a freezing-centrifugal desalination system is proposed. The thermodynamic and economic analysis is also carried out of the proposed system. To verify the results of sea ice centrifugation process, experimental analysis of sea ice centrifugal desalination is presented based on different types of sea ice: slurry and solid, which are prepared by the method of suspension crystallization method and progressive freezing method, respectively. The experimental outcomes demonstrated that higher rotation speeds and longer centrifugal times enhanced the desalination rate but resulted in decreased freshwater yield in both slurry and solid ice. For the slurry sea ice, achieving a rotation speed of 5000 rpm and a centrifugal time exceeding 3.0 min resulted in melted water with a salinity level below 0.05%, satisfying the standards of drinking water. Moreover, the unit product cost, payback period, and unit cost of CO2 emission reduction for the proposed system are 0.49 $/t, 3.25 years and 18.92 kg/$, respectively. While the unit product cost, payback period, and unit cost of CO2 emission reduction for the conventional system are about 0.84 $/t, 4.80 years, and 15.66 kg/$, respectively. Hence, the proposed system shows higher economic and environmental performance.
Keyword ：
Centrifugal desalination Centrifugal desalination Freezing desalination Freezing desalination LNG cold energy recovery LNG cold energy recovery Slurry ice Slurry ice
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | Lan, Wenchao , Liu, Xi , Ye, Kai et al. Comprehensive thermodynamic and economic analysis of an LNG cold energy recovery system using organic Rankine cycle and freezing-centrifugal desalination for power and water cogeneration [J]. | JOURNAL OF CLEANER PRODUCTION , 2024 , 461 . |
| MLA | Lan, Wenchao et al. "Comprehensive thermodynamic and economic analysis of an LNG cold energy recovery system using organic Rankine cycle and freezing-centrifugal desalination for power and water cogeneration" . | JOURNAL OF CLEANER PRODUCTION 461 (2024) . |
| APA | Lan, Wenchao , Liu, Xi , Ye, Kai , Xie, Meina , Chen, Longxiang . Comprehensive thermodynamic and economic analysis of an LNG cold energy recovery system using organic Rankine cycle and freezing-centrifugal desalination for power and water cogeneration . | JOURNAL OF CLEANER PRODUCTION , 2024 , 461 . |
| Export to | NoteExpress RIS BibTex |
Version ：
Abstract ：
搭建了一套过冷水制冰系统,实验探究板式过冷却器内壁面结冰行为的关键影响因素.实验结果表明:静止和流动状态下的过冷水结冰均具有较强的随机性,在相同的实验条件下,制冰溶液在过冷却器内出现了3种不同的实验现象.动态制冰时,过高或过低的载冷剂进口温度均会对系统稳定制冰产生不利影响,-6℃是一个较为合适的载冷剂进口温度.系统稳定制冰的关键在于控制壁面温度,载冷剂进口温度和制冰溶液流量均能对换热壁面温度产生影响,且载冷剂进口温度对壁面温度的影响大于制冰溶液流量.相比于流动的制冰溶液,静态的制冰溶液更容易在换热壁面发生结冰.
Keyword ：
冰浆 冰浆 壁面结冰 壁面结冰 板式过冷却器 板式过冷却器 结冰行为 结冰行为 过冷水法 过冷水法
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | 刘曦 , 范俊杰 , 王震 et al. 板式过冷却器内壁面结冰行为的实验研究 [J]. | 制冷 , 2023 , 42 (4) : 45-51,57 . |
| MLA | 刘曦 et al. "板式过冷却器内壁面结冰行为的实验研究" . | 制冷 42 . 4 (2023) : 45-51,57 . |
| APA | 刘曦 , 范俊杰 , 王震 , 林晨阳 , 陈曦 , 裴依豪 et al. 板式过冷却器内壁面结冰行为的实验研究 . | 制冷 , 2023 , 42 (4) , 45-51,57 . |
| Export to | NoteExpress RIS BibTex |
Version ：
Abstract ：
In this study, an innovative system that combined a heat pump, multi-effect desalination, and ice storage subsystem is proposed. The heat pump provides both thermal energy and cold energy for the system to achieve desalination and ice generation. The performance of the proposed system is compared with the conventional mechanical vapor compression and air conditioning systems. The thermodynamic, economic, and environmental analysis is also carried out of both proposed and conventional systems. Moreover, the impacts of the different refrigerants, the condensation temperature of the first effect, and the different areas are carried out to evaluate the effects of several vital parameters on the proposed system. Results showed that the specific energy consumption for the proposed and conventional systems is 4.71 kWh/t and 8.94 kWh/t, respectively. For the economic performance, the payback period of the proposed system is 3.85 years, while it is 5.90 years for the conventional system. For the environmental performance, the unit profit CO2 emission is 15.50 kg/$ of the proposed system, which is 7.68% lower than the conventional system (16.79 kg/$). Hence, the proposed system shows higher economic and environmental performance.
Keyword ：
CO 2 emission CO 2 emission Combined cold and water system Combined cold and water system Heat pump Heat pump Multi-effect desalination Multi-effect desalination Seawater desalination Seawater desalination
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | Chen, Longxiang , Liu, Xi , Ye, Kai et al. Thermodynamic and economic analysis of an integration system of multi-effect desalination (MED) with ice storage based on a heat pump [J]. | ENERGY , 2023 , 283 . |
| MLA | Chen, Longxiang et al. "Thermodynamic and economic analysis of an integration system of multi-effect desalination (MED) with ice storage based on a heat pump" . | ENERGY 283 (2023) . |
| APA | Chen, Longxiang , Liu, Xi , Ye, Kai , Xie, Meina , Lan, Wenchao . Thermodynamic and economic analysis of an integration system of multi-effect desalination (MED) with ice storage based on a heat pump . | ENERGY , 2023 , 283 . |
| Export to | NoteExpress RIS BibTex |
Version ：
Abstract ：
In this study, numerical and experimental studies of ice directional crystallization for the NaCl, Na2SO4, MgCl2, and MgSO4 solutions were investigated. The comparison of energy consumption between freezing-centrifugal desalination and the conventional method was discussed. The phase-field method was employed to simulate the ice directional crystallization process. A microscope experimental setup was established to observe the morphology of dendrites and verify the theoretical model in the directional crystallization process. The absolute deviations of the average width of the brine channel between numerical and experimental results are less than 15%, which indicates that the phase-field method can present the performance of ice directional crystallization well. The results also showed that in the directional crystallization process, the solutions with SO42- (Na2SO4 and MgSO(4)( )solutions, and their mixtures) form narrower brine channels than that of NaCl and MgCl2 solutions due to their low diffusion coefficient. Moreover, the impacts of ions and brine channel on the freezing-centrifugal desalination were investigated by the experiments. When the rotation speed and centrifugal time were set at 5000 rpm and 2.0 min, respectively, the salt removal efficiency of NaCl and MgCl2 was higher than 96%, while they were less than 13% for the Na2SO4 and MgSO4 solutions. Hence, the SO42- ion plays a significant role in preventing sea ice desalination due to narrower brine channels.
Keyword ：
Centrifugal desalination Centrifugal desalination Freezing desalination Freezing desalination Ice crystal growth Ice crystal growth Phase-field method Phase-field method Seawater composition Seawater composition
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | Liu, Xi , Lan, Wenchao , Ye, Kai et al. Numerical simulation and experimental analysis of ice crystal growth and freezing-centrifugal desalination for seawater with different compositions [J]. | SEPARATION AND PURIFICATION TECHNOLOGY , 2022 , 298 . |
| MLA | Liu, Xi et al. "Numerical simulation and experimental analysis of ice crystal growth and freezing-centrifugal desalination for seawater with different compositions" . | SEPARATION AND PURIFICATION TECHNOLOGY 298 (2022) . |
| APA | Liu, Xi , Lan, Wenchao , Ye, Kai , Han, Wei , Zhang, Jincheng , Mohtaram, Soheil et al. Numerical simulation and experimental analysis of ice crystal growth and freezing-centrifugal desalination for seawater with different compositions . | SEPARATION AND PURIFICATION TECHNOLOGY , 2022 , 298 . |
| Export to | NoteExpress RIS BibTex |
Version ：
Abstract ：
建立了小流量离心式制冷压缩机内部流动的三维数学模型，并用Krain离心式压气机的实验数据对该模型进行了验证。采用ANSYS CFX软件，调用真实气体模型并读取R134a物性参数，对小流量离心式制冷压缩机内部流动进行了数值模拟。分析了进口叶片角、出口叶片角、相对分流叶片长度等结构参数对压缩机气动性能的影响规律及其内在原因。根据数值分析结果对基于一元流方法设计的原型压缩机结构进行了改进，使其压比提高了使其压比提高了2.68%、等熵效率提高了2.17%。
Keyword ：
性能 性能 数值分析 数值分析 离心式制冷压缩机 离心式制冷压缩机 结构参数 结构参数
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | 王震 , 范俊杰 , 林晨阳 et al. 结构参数对离心式制冷压缩机性能影响的数值分析 [J]. | 制冷 , 2022 , 41 (04) : 51-55,60 . |
| MLA | 王震 et al. "结构参数对离心式制冷压缩机性能影响的数值分析" . | 制冷 41 . 04 (2022) : 51-55,60 . |
| APA | 王震 , 范俊杰 , 林晨阳 , 刘曦 , 郑闽锋 , 李学来 . 结构参数对离心式制冷压缩机性能影响的数值分析 . | 制冷 , 2022 , 41 (04) , 51-55,60 . |
| Export to | NoteExpress RIS BibTex |
Version ：
Abstract ：
对小流量离心式压缩机内部流动进行了数值模拟,分析了进口叶片角,出口叶片角,叶顶间隙,扩压器出口直径等结构参数对压缩机气动性能的影响,通过内部流场分析探讨了这些参数对气动性能影响的内在机制.分析表明:适当减小叶片入口安装角,适当增大叶片出口安装角,适当减小叶顶间隙,适当减小扩压器出口直径,均可以在一定程度上提升离心压缩机性能.本文研究结果可供小流量离心式的结构优化设计参考.
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | 万欣辰 , 郑闽锋 , 刘曦 et al. 小流量离心式压缩机气动性能数值分析 [J]. | 制冷 , 2021 , 40 (3) : 18-28 . |
| MLA | 万欣辰 et al. "小流量离心式压缩机气动性能数值分析" . | 制冷 40 . 3 (2021) : 18-28 . |
| APA | 万欣辰 , 郑闽锋 , 刘曦 , 李学来 . 小流量离心式压缩机气动性能数值分析 . | 制冷 , 2021 , 40 (3) , 18-28 . |
| Export to | NoteExpress RIS BibTex |
Version ：
Abstract ：
设计了一套半导体制冷元器件性能参数测试装置,利用该装置通过实验测得型号TEC1-12706半导体制冷元器件的制冷量和散热量,并结合实验数据与理论计算推导出半导体元器件冷热端温度及相关性能参数。实验结果表明,该装置可测试出半导体制冷元器件在不同温度下的电阻R、塞贝克系数α、导热系数κ和优质系数Z等性能参数;同时,对测试结果的准确性进行了分析,指出实验测试的不足,并对测试数据进行了修正,修正结果显示了半导体性能参数与平均温度之间的关系。该装置对半导体制冷元器件性能参数测试结果数量级与相关文献测试结果一致,具有一定的准确性,能够为半导体性能参数测试研究提供参考。
Keyword ：
半导体制冷元器件 半导体制冷元器件 实验研究 实验研究 性能参数 性能参数
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | 黄双福 , 刘曦 , 袁俊威 . 半导体制冷元器件性能参数测试实验研究 [J]. | 热科学与技术 , 2021 , 20 (06) : 521-527 . |
| MLA | 黄双福 et al. "半导体制冷元器件性能参数测试实验研究" . | 热科学与技术 20 . 06 (2021) : 521-527 . |
| APA | 黄双福 , 刘曦 , 袁俊威 . 半导体制冷元器件性能参数测试实验研究 . | 热科学与技术 , 2021 , 20 (06) , 521-527 . |
| Export to | NoteExpress RIS BibTex |
Version ：
Abstract ：
本文设计并搭建了一套过冷水动态制冰系统,开发了一种可视化平板过冷却器,通过实验研究流动和换热对过冷却器内结冰行为的影响,并基于经典成核理论与边界层理论对其作用机理进行解释。实验结果表明:平板过冷却器内存在两种典型结冰行为,结冰行为一表现为过冷却器内不结冰,系统可连续制取冰浆;结冰行为二表现为过冷却器内发生结冰,系统不能制取冰浆。载冷剂进口温度过低、制冰溶液流量过大或过小均会促进结冰行为二的出现,不利于系统制冰稳定性。发生结冰行为二时,相对距离d为0.15的壁面优先发生结冰,且该处壁面的温度总低于其余区域,因此优先发生结冰的局部条件是具有更低的壁面温度。
Keyword ：
冰浆 冰浆 板式换热器 板式换热器 流动与换热 流动与换热 结冰行为 结冰行为
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | 王锦辉 , 郑闽锋 , 李月玲 et al. 平板过冷却器内结冰行为的实验研究 [J]. | 制冷学报 , 2021 , 42 (04) : 142-148,157 . |
| MLA | 王锦辉 et al. "平板过冷却器内结冰行为的实验研究" . | 制冷学报 42 . 04 (2021) : 142-148,157 . |
| APA | 王锦辉 , 郑闽锋 , 李月玲 , 刘曦 , 李学来 . 平板过冷却器内结冰行为的实验研究 . | 制冷学报 , 2021 , 42 (04) , 142-148,157 . |
| Export to | NoteExpress RIS BibTex |
Version ：
Export
| Results： |
Selected to |
| Format： |
