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For an integrated liquefied air energy storage and electricity generation system, mathematical models of the liquefied air energy storage and electricity generation process are established using a thermodynamic theory. The effects of the outlet pressure of the compressor unit, the outlet pressure of the cryogenic pump, the heat exchanger effectiveness, the initial air temperature and pressure before throttling on the performances of the integrated liquefied air energy storage, and the electricity generation system are investigated, using the cycle efficiency and liquid air yield ratio as the evaluation indexes. The results show that if the compressor outlet pressure is raised, both the compression work and the expansion work increase, but because the expansion work increases more slowly, the cycle efficiency of the system gradually decreases. Increasing the cryogenic pump outlet pressure and heat exchanger effectiveness can significantly increase the cycle efficiency of the system; the higher the air pressure and the lower the air temperature before throttling, the greater the liquid air yield after expansion, and the higher the cycle efficiency. The theoretical analysis models and research results can provide a reference for the development of an integrated system of liquefied air energy storage and electricity production, as well as for the development of medium-capacity energy storage technology.
Yingbai Xie; Xiaodong Xue. Thermodynamic Analysis on an Integrated Liquefied Air Energy Storage and Electricity Generation System. Energies 2018, 11, 2540 .
AMA StyleYingbai Xie, Xiaodong Xue. Thermodynamic Analysis on an Integrated Liquefied Air Energy Storage and Electricity Generation System. Energies. 2018; 11 (10):2540.
Chicago/Turabian StyleYingbai Xie; Xiaodong Xue. 2018. "Thermodynamic Analysis on an Integrated Liquefied Air Energy Storage and Electricity Generation System." Energies 11, no. 10: 2540.
The performances of thermodynamics cycles are dependent on the properties of refrigerants. The performances of Vuilleumier (VM) cycle heat pump adopting mixture refrigerants are analyzed by MATLAB software using REFPROP programming. At given operating parameters and configuration, performances of the VM cycle adopting pure refrigerant, H2, He or N2 are compared. Thermodynamic properties of the four type mixtures, namely, He-H2, He-N2, H2-N2 and He-H2-N2, are obtained with total 16 mixing ratio, and the coefficient of performance and the exergy efficiency of these four mixture types in VM cycle heat pump are calculated. The results indicate that within the temperature of heat source 400–1000 K, helium is the best choice of pure refrigerant for VM cycle heat pump. The He-H2 mixture is the best among all binary refrigerant mixtures; the recommended proportion is 1:2. For trinary refrigerant mixture, suggested proportion of helium, hydrogen and nitrogen is 2:2:1. For these recommended mixtures, system COPs (coefficient of performances) are close to 3.3 and exergy efficiencies are about 0.2, which are close to pure refrigerant helium.
Yingbai Xie; Kai Zhong. Investigation on the Performances of Vuilleumier Cycle Heat Pump Adopting Mixture Refrigerants. Entropy 2017, 19, 446 .
AMA StyleYingbai Xie, Kai Zhong. Investigation on the Performances of Vuilleumier Cycle Heat Pump Adopting Mixture Refrigerants. Entropy. 2017; 19 (9):446.
Chicago/Turabian StyleYingbai Xie; Kai Zhong. 2017. "Investigation on the Performances of Vuilleumier Cycle Heat Pump Adopting Mixture Refrigerants." Entropy 19, no. 9: 446.
A Vuilleumier (VM) cycle heat pump is a closed gas cycle driven by heat energy. It has the highest performance among all known heat driven technologies. In this paper, two thermodynamic analyses, including energy and exergy analysis, are carried out to evaluate the application of a VM cycle heat pump for waste heat utilization. For a prototype VM cycle heat pump, equations for theoretical and actual cycles are established. Under the given conditions, the exergy efficiency for the theoretical cycle is 0.23 compared to 0.15 for the actual cycle. This is due to losses taking place in the actual cycle. Reheat losses and flow friction losses account for almost 83% of the total losses. Investigation of the effect of heat source temperature, cycle pressure and speed on the exergy efficiency indicate that the low temperature waste heat is a suitable heat source for a VM cycle heat pump. The selected cycle pressure should be higher than 100 MPa, and 200–300 rpm is the optimum speed.
Yingbai Xie; Xuejie Sun. Thermodynamic Analysis of a Waste Heat Driven Vuilleumier Cycle Heat Pump. Entropy 2015, 17, 1452 -1465.
AMA StyleYingbai Xie, Xuejie Sun. Thermodynamic Analysis of a Waste Heat Driven Vuilleumier Cycle Heat Pump. Entropy. 2015; 17 (3):1452-1465.
Chicago/Turabian StyleYingbai Xie; Xuejie Sun. 2015. "Thermodynamic Analysis of a Waste Heat Driven Vuilleumier Cycle Heat Pump." Entropy 17, no. 3: 1452-1465.
In gas cooler, a key component of transcritical heat pump system, CO2 is always in supercritical status. A well design gas cooler should get the full informations of supercritcal CO2 in-tube cooling heat transfer characteristic. An EES program is developed to calculate the supercritical CO2 cooling heat transfer performances based on 4 selected correlation equations. According to the results and the thermopgysical parameters of supercritical CO2, such as specific heat, density, thermal conductivity and dynamic viscosity, two region, the starting area of supercritical region and the main supercritical region, is suggested for supercritical CO2 cooling heat transfer by temperature at 80°C. In the staring area, the variations of heat transfer and other parameters are intensive, while in the main supercritical region, the variations are clined to be stable.
Ying Bai Xie; Yi Chen; Ti Jun Wang. Research on the Region Division for Supercritical CO2 Cooling Heat Transfer in Gas Cooler. Advanced Materials Research 2014, 1008-1009, 1084 -1087.
AMA StyleYing Bai Xie, Yi Chen, Ti Jun Wang. Research on the Region Division for Supercritical CO2 Cooling Heat Transfer in Gas Cooler. Advanced Materials Research. 2014; 1008-1009 ():1084-1087.
Chicago/Turabian StyleYing Bai Xie; Yi Chen; Ti Jun Wang. 2014. "Research on the Region Division for Supercritical CO2 Cooling Heat Transfer in Gas Cooler." Advanced Materials Research 1008-1009, no. : 1084-1087.
Vuilleumier cycle heat pump (VM) has highest efficiency among all heat driven cycle. In this paper, solar, geo-thermal and biomass energy are investigated as input thermal energy to driven VM cycle heat pump. Fuzzy comprehensive evaluation method is applied to evaluate system performances. Initial investment of the system (IS), system reliability (RS), environmental protection of system (EP), VM exergy efficiency (EE) and VM coefficient of performance (COP) are selected as main evaluation indexes. For all the three renewable input energy, system are scored good, solar driven is better than the other two.
Ying Bai Xie; Xiao Dong Deng; Jin He Zhao. Fuzzy Comprehensive Evaluation of System Performance for Vuilleumier Cycle Heat Pump Driven by Solar, Geo-Thermal and Biomass Energy. Advanced Materials Research 2014, 1008-1009, 1080 -1083.
AMA StyleYing Bai Xie, Xiao Dong Deng, Jin He Zhao. Fuzzy Comprehensive Evaluation of System Performance for Vuilleumier Cycle Heat Pump Driven by Solar, Geo-Thermal and Biomass Energy. Advanced Materials Research. 2014; 1008-1009 ():1080-1083.
Chicago/Turabian StyleYing Bai Xie; Xiao Dong Deng; Jin He Zhao. 2014. "Fuzzy Comprehensive Evaluation of System Performance for Vuilleumier Cycle Heat Pump Driven by Solar, Geo-Thermal and Biomass Energy." Advanced Materials Research 1008-1009, no. : 1080-1083.
The (H)CFC-phase out and the fear for future problems for other synthetic working fluids, because of their known and unknown impact on the environment, have introduced a rising interest in environmentally safe natural working fluids. CO2is one of the few non-toxic and non-flammable working fluids that do not contribute to ozone depletion or global warming, if leaked to the atmosphere. Because the critical temperature of CO2is only 31.1°C, the transcritical cycle can be used to improve the coefficient of performance of the system. The experimental investigation and theoretical analysis on transcritical carbon dioxide heat pump system are carried out in this paper. It points out that there is an optimum operational pressure on transcritical carbon dioxide heat pump cycle, when the outlet temperature of gas cooler is constant, the coefficient of performance increases with increasing evaporating temperature at the same conditions, and the operational efficiency increased with decrease of gas cooler exit temperature. So in order to obtain the optimum performance, the influence of evaporating temperature, gas cooler exit temperature, and the operational pressure should be considered during the designing and operating transcritical carbon dioxide heat pump system.
Lu Xiang Zong; Jian Lin Liu; Xue Shi; Ying Bai Xie. The Experimental Investigation and Theoretical Analysis on Transcritical Carbon Dioxide Heat Pump Cycle. Advanced Materials Research 2012, 455-456, 240 -245.
AMA StyleLu Xiang Zong, Jian Lin Liu, Xue Shi, Ying Bai Xie. The Experimental Investigation and Theoretical Analysis on Transcritical Carbon Dioxide Heat Pump Cycle. Advanced Materials Research. 2012; 455-456 ():240-245.
Chicago/Turabian StyleLu Xiang Zong; Jian Lin Liu; Xue Shi; Ying Bai Xie. 2012. "The Experimental Investigation and Theoretical Analysis on Transcritical Carbon Dioxide Heat Pump Cycle." Advanced Materials Research 455-456, no. : 240-245.
. In order to research the overall performance of the natural gas driven Vuilleumier (VM) cycle heat pump deeply, we adopt the fuzzy mathematical theory, the fuzzy comprehensive evaluation of performance of the natural gas driven VM cycle heat pump has been discussed in this paper from five aspects: technology, economy, safety, maintainability and environmental protection. Combine fuzzy comprehensive evaluation with performance study of the natural gas driven VM cycle heat pump; it is a effective way to improve scientific of the comprehensive evaluation and the reliability of the results.
Ying Bai Xie; Bing Li; Shao Heng Wang; Yun Liu. Fuzzy Comprehensive Evaluation of Performance of the Natural Gas Driven Vuilleumier Cycle Heat Pump. Advanced Materials Research 2012, 455-456, 1102 -1108.
AMA StyleYing Bai Xie, Bing Li, Shao Heng Wang, Yun Liu. Fuzzy Comprehensive Evaluation of Performance of the Natural Gas Driven Vuilleumier Cycle Heat Pump. Advanced Materials Research. 2012; 455-456 ():1102-1108.
Chicago/Turabian StyleYing Bai Xie; Bing Li; Shao Heng Wang; Yun Liu. 2012. "Fuzzy Comprehensive Evaluation of Performance of the Natural Gas Driven Vuilleumier Cycle Heat Pump." Advanced Materials Research 455-456, no. : 1102-1108.
Because the refrigerant can cause serious damage to the ozone layer and form the greenhouse effect, developing green environmental protection refrigeration technology has become a consensus. Based on the view, this paper puts forward a new device called the solar energy driven VM cycle heat pump which used the natural working materials—nitrogen as the refrigerant and the clean energy—solar as the driven energy. According to build the thermodynamic model, the influence of heat source temperature on the ideal cycle has been analysed. And COP of the solar driven the VM cycle heat pump will be received. With the city of Beijing, for example, the device refrigeration COP can reach at least 1.4.
Jian Cheng Tang; Bing Li; Yu Wu; Yingbai Xie. Thermodynamic Analysis of Solar Driven Vuilleumier Cycle Heat Pump. Advanced Materials Research 2012, 455-456, 252 -257.
AMA StyleJian Cheng Tang, Bing Li, Yu Wu, Yingbai Xie. Thermodynamic Analysis of Solar Driven Vuilleumier Cycle Heat Pump. Advanced Materials Research. 2012; 455-456 ():252-257.
Chicago/Turabian StyleJian Cheng Tang; Bing Li; Yu Wu; Yingbai Xie. 2012. "Thermodynamic Analysis of Solar Driven Vuilleumier Cycle Heat Pump." Advanced Materials Research 455-456, no. : 252-257.
The (H)CFC-phase-out and the fear for future problems for other synthetic working fluids, because of their known and unknown impact on the environment, have introduced a rising interest in environmentally safe natural working fluids. CO2 is one of the few non-toxic and non-flammable working fluids that do not contribute to ozone depletion or global warming, if leaked to the atmosphere. Because the critical temperature of CO2 is only 31.1 °C, the transcritical cycle can be used to improve the coefficient of performance of the system. To the gas cooler of transcritical CO2 heat pump system for thermodynamics analysis and test results show that gas cooler on the system's performance has a great influence, so need to the performance analysis of the gas cooler. Analytical process should be taken into account in evaporation temperature, gas cooler outlet temperature and pressure, using exergy analysis method to heat exchanger performance analysis.
Yingbai Xie; Zhichao Wang; Kuikui Cui; Xuedong Zhang. The Exergy Analysis Of Gas Cooler In CO2 Heat Pump System. Procedia Environmental Sciences 2011, 11, 1555 -1560.
AMA StyleYingbai Xie, Zhichao Wang, Kuikui Cui, Xuedong Zhang. The Exergy Analysis Of Gas Cooler In CO2 Heat Pump System. Procedia Environmental Sciences. 2011; 11 ():1555-1560.
Chicago/Turabian StyleYingbai Xie; Zhichao Wang; Kuikui Cui; Xuedong Zhang. 2011. "The Exergy Analysis Of Gas Cooler In CO2 Heat Pump System." Procedia Environmental Sciences 11, no. : 1555-1560.
Heat exchanger is one of the most important devices in thermal system. An experimental system is developed for testing the heat-exchange performance of cryogenic compact exchangers. This system mainly consists of a regenerator, a cold box, a liquid nitrogen dewar, two cryogenic transfer lines and other devices. The features of the main components are described in this paper. A measurement system based on PC is developed for this system. All of these make this system more reliable, convenient, and energy-saving.
Jiancheng Tang; Yingbai Xie; Lianyou Xiong; Wenhai Lu; Jing Li. Design of an experimental system for cryogenic compact exchanger. 2011 Second International Conference on Mechanic Automation and Control Engineering 2011, 1173 -1175.
AMA StyleJiancheng Tang, Yingbai Xie, Lianyou Xiong, Wenhai Lu, Jing Li. Design of an experimental system for cryogenic compact exchanger. 2011 Second International Conference on Mechanic Automation and Control Engineering. 2011; ():1173-1175.
Chicago/Turabian StyleJiancheng Tang; Yingbai Xie; Lianyou Xiong; Wenhai Lu; Jing Li. 2011. "Design of an experimental system for cryogenic compact exchanger." 2011 Second International Conference on Mechanic Automation and Control Engineering , no. : 1173-1175.
To improve the overall performance of the VM cycle pump. Based on the mixture with nitrogen (including N2 - Ne, N2 - Ar, and N2 - Kr) by working in the regenerator of flow and heat transfer in performance is analyzed and calculated, different mix of refrigerant regenerator performance impact. To enhance the VM cycle pump overall performance study provides new ideas.
Ying Bai Xie; Shao Heng Wang; Bing Li; Yun Liu. Influences of Binary Mixtures on the Regenerator of VM Cycle Heat Pump. Applied Mechanics and Materials 2011, 52-54, 249 -254.
AMA StyleYing Bai Xie, Shao Heng Wang, Bing Li, Yun Liu. Influences of Binary Mixtures on the Regenerator of VM Cycle Heat Pump. Applied Mechanics and Materials. 2011; 52-54 ():249-254.
Chicago/Turabian StyleYing Bai Xie; Shao Heng Wang; Bing Li; Yun Liu. 2011. "Influences of Binary Mixtures on the Regenerator of VM Cycle Heat Pump." Applied Mechanics and Materials 52-54, no. : 249-254.
The paper analyses CO2 trans-critical two stage compression refrigeration cycle with vortex tube expansion by thermodynamics method. And compare with CO2 trans-critical two stage compression refrigeration cycle with expansion value. The results show that in the calculated conditions of the paper, the performance of the cycle with vortex tube improves 2.4%~16.3% than the cycle with expansion value. The optimal discharge pressure maximizing COP of the cycle with vortex tube exists. With lower evaporating temperature or higher gas cooler exit temperature, COP of system decreases and COP improvement increases. The effect of cold fluid mass fraction on COP is not significant, but COP improvement increases more quickly with cold gas mass fraction increasing.
Ying Bai Xie; Kui Kui Cui; Zhi Chao Wang; Jian Lin Liu. CO2 Trans-Critical Two Stage Compression Refrigeration Cycle with Vortex Tube. Applied Mechanics and Materials 2011, 52-54, 255 -260.
AMA StyleYing Bai Xie, Kui Kui Cui, Zhi Chao Wang, Jian Lin Liu. CO2 Trans-Critical Two Stage Compression Refrigeration Cycle with Vortex Tube. Applied Mechanics and Materials. 2011; 52-54 ():255-260.
Chicago/Turabian StyleYing Bai Xie; Kui Kui Cui; Zhi Chao Wang; Jian Lin Liu. 2011. "CO2 Trans-Critical Two Stage Compression Refrigeration Cycle with Vortex Tube." Applied Mechanics and Materials 52-54, no. : 255-260.
Condensate pump is employed to pump the water in condenser to deaerator, maintains the water height in deaerator and enables units operate continuously. Currently, system efficiency of 600 MW units is comparatively low due to high design pressure head and large throttling pressure loss. This paper takes NLT500-570x4S condensate pump as example, and analyzes its existing problems based on performances test. Further, aims at solve these problems, some modification works, such as reducing the throttling pressure loss and reforming the through-flow as well as improving the craft of inspection, are performed. The results show that the highest efficiency of the condensate pump was improved with 5.5% under the best design flux.
Yingbai Xie; Jianlin Liu; Zhichao Wang; Yun Liu. Energy Conservation Renovation on 600MW Units Condensate Pump. Lecture Notes in Electrical Engineering 2011, 87, 9 -13.
AMA StyleYingbai Xie, Jianlin Liu, Zhichao Wang, Yun Liu. Energy Conservation Renovation on 600MW Units Condensate Pump. Lecture Notes in Electrical Engineering. 2011; 87 ():9-13.
Chicago/Turabian StyleYingbai Xie; Jianlin Liu; Zhichao Wang; Yun Liu. 2011. "Energy Conservation Renovation on 600MW Units Condensate Pump." Lecture Notes in Electrical Engineering 87, no. : 9-13.
By using low grade solar energy, the utilization of heat energy can be increased more than 50%.The solar energy is cleanliness without any pollution, and can be used unboundedly. For our present energy structure is not proper, we have to use low grade energy instead of high grade energy. Vuilleumier (VM) cycle system include two Isochoric and isothermal processes [1], it has many advantages, such as low requirement for seal, low noise and pollution levels, long life and so on. This paper analyzes the performance of solar driven VM heat pump, and calculates an example of the system, points the advantages of solar-driven.
Yingbai Xie; Bing Li; Shaoheng Wang; Jiancheng Tang. Performance of Solar Driven Vuilleumier Cycle Heat Pump. Volume 2: Biomedical and Biotechnology Engineering 2010, 1203 -1207.
AMA StyleYingbai Xie, Bing Li, Shaoheng Wang, Jiancheng Tang. Performance of Solar Driven Vuilleumier Cycle Heat Pump. Volume 2: Biomedical and Biotechnology Engineering. 2010; ():1203-1207.
Chicago/Turabian StyleYingbai Xie; Bing Li; Shaoheng Wang; Jiancheng Tang. 2010. "Performance of Solar Driven Vuilleumier Cycle Heat Pump." Volume 2: Biomedical and Biotechnology Engineering , no. : 1203-1207.
This paper introduces a cascade refrigeration cycle that uses natural refrigerants of CO2 and NH3 at low temperature. It introduces the character of CO2 and NH3, besides analyzes the cascade refrigeration cycle. The optimal intermediate temperature of NH3/CO2 cascade refrigeration cycle is determined by the entropy production minimization method. We analyze the four processes entropy production in both CO2 cycle (LT side) and NH3 cycle (HT side) and research how the total entropy production changes in the conditions of different T0, different TCL and different ΔT. We also find that in order to enhance the efficiency of NH3/CO2 cascade refrigeration cycle, it is necessary to reduce ΔT. It can be concluded that NH3/CO2 cascade refrigeration cycle has a good future.
Yingbai Xie; Kuikui Cui; Luxiang Zong; Zhichao Wang. The Entropy Analysis on NH3/CO2 Cascade Refrigeration Cycle. Volume 2: Biomedical and Biotechnology Engineering 2010, 823 -828.
AMA StyleYingbai Xie, Kuikui Cui, Luxiang Zong, Zhichao Wang. The Entropy Analysis on NH3/CO2 Cascade Refrigeration Cycle. Volume 2: Biomedical and Biotechnology Engineering. 2010; ():823-828.
Chicago/Turabian StyleYingbai Xie; Kuikui Cui; Luxiang Zong; Zhichao Wang. 2010. "The Entropy Analysis on NH3/CO2 Cascade Refrigeration Cycle." Volume 2: Biomedical and Biotechnology Engineering , no. : 823-828.
Synthetic refrigerants such as CFCs and HCFCs deplete ozone and cause greenhouse effect. CO2 as a natural working fluid has zero Ozone Depletion Potential and its Global Warming Potential is equal to 1, is receiving more and more attention in the refrigeration field. Because the critical temperature of CO2 is only 31.1°c, the trans-critical cycle can be used to improve the coefficient of performance of the system. The thermodynamic analysis and experimental investigation on trans-critical carbon dioxide heat pump system are carried out in this paper. It points out that there is an optimum operational pressure on trans-critical carbon dioxide heat pump cycle, when the outlet temperature of gas cooler is constant, the coefficient of performance increases with increasing evaporating temperature at the same conditions, and the operational efficiency increased with decrease of gas cooler exit temperature. So in order to obtain the optimum performance, the influence of evaporating temperature, gas cooler exit temperature, and the operational pressure should be considered during the designing and operating transcritical carbon dioxide heat pump system.
Yingbai Xie; Yingfu Liu; Yingcheng Mai; Luxiang Zong. The Thermodynamic Analysis and Experimental Investigation on Transcritical Carbon Dioxide Heat Pump System. ASME 2010 4th International Conference on Energy Sustainability, Volume 2 2010, 405 -409.
AMA StyleYingbai Xie, Yingfu Liu, Yingcheng Mai, Luxiang Zong. The Thermodynamic Analysis and Experimental Investigation on Transcritical Carbon Dioxide Heat Pump System. ASME 2010 4th International Conference on Energy Sustainability, Volume 2. 2010; ():405-409.
Chicago/Turabian StyleYingbai Xie; Yingfu Liu; Yingcheng Mai; Luxiang Zong. 2010. "The Thermodynamic Analysis and Experimental Investigation on Transcritical Carbon Dioxide Heat Pump System." ASME 2010 4th International Conference on Energy Sustainability, Volume 2 , no. : 405-409.
Heat exchanger is one of the most important devices in thermal system. An experimental system is developed for testing the heat-exchange performance of cryogenic compact exchangers. This system mainly consists of a regenerator, a cold box, a liquid nitrogen dewar, two cryogenic transfer lines and other devices. The features of the main components are described in this paper. A measurement system based on PC is developed for this system. All of these make this system more reliable, convenient, and energy-saving.
Jiancheng Tang; Yingbai Xie. Design of an Experimental System for Cryogenic Compact Exchanger. ASME 2010 Power Conference 2010, 553 -555.
AMA StyleJiancheng Tang, Yingbai Xie. Design of an Experimental System for Cryogenic Compact Exchanger. ASME 2010 Power Conference. 2010; ():553-555.
Chicago/Turabian StyleJiancheng Tang; Yingbai Xie. 2010. "Design of an Experimental System for Cryogenic Compact Exchanger." ASME 2010 Power Conference , no. : 553-555.
In this paper, the gas cooler in trans-critical CO2 refrigeration cycle system is studied experimentally. Research shows that: the temperature different between the inlet CO2 and the cooling water changes in a wide range as the heat rejection pressure changes, but the outlet CO2 temperature of the gas cooler is almost unchanged; the relative pressure drop is only about 1% when the heat rejection pressure is 9MPa in the system; with the increase of gas cooler exit temperature, the refrigerating capacity decreases linearly first, and the latter becoming more and more stable, but the compression work is linearly increased; on the experimental conditions, the COP decreased about 25% when the outlet temperature of the gas cooler ranged from 30°C to 37°C.
Yingbai Xie; Yingfu Liu; Jiancheng Tang; Ganglei Sun. Experimental Study of Gas Cooler in Trans-Critical CO2 Refrigeration System. Volume 9: Heat Transfer, Fluid Flows, and Thermal Systems, Parts A, B and C 2009, 1061 -1065.
AMA StyleYingbai Xie, Yingfu Liu, Jiancheng Tang, Ganglei Sun. Experimental Study of Gas Cooler in Trans-Critical CO2 Refrigeration System. Volume 9: Heat Transfer, Fluid Flows, and Thermal Systems, Parts A, B and C. 2009; ():1061-1065.
Chicago/Turabian StyleYingbai Xie; Yingfu Liu; Jiancheng Tang; Ganglei Sun. 2009. "Experimental Study of Gas Cooler in Trans-Critical CO2 Refrigeration System." Volume 9: Heat Transfer, Fluid Flows, and Thermal Systems, Parts A, B and C , no. : 1061-1065.
As an efficiency heat and mass transfer method, thin liquid film has been widely used in industry. This paper studies on liquid nitrogen laminar film flows in the brazed cryogenic heat exchanger with 2.3mm distance between plates. Simplified theoretical models are established based on the characteristics of both the dynamic and heat and mass transfer of nitrogen film. Relationship between the dimensionless thickness and the coefficient of heat convection of liquid nitrogen film is derived. And the impact of rate of vapor content, intensity of interfacial convection heat transfer and Reynolds numbers are calculated and analyzed.
Ying-Bai Xie; Cheng Zhao; Jian-Cheng Tang; Ying-Cheng Mai. Hydrodynamics and Heat Transfer of Liquid Nitrogen Laminar Falling Films in Cryogenic Heat Exchanger. Volume 9: Heat Transfer, Fluid Flows, and Thermal Systems, Parts A, B and C 2009, 595 -599.
AMA StyleYing-Bai Xie, Cheng Zhao, Jian-Cheng Tang, Ying-Cheng Mai. Hydrodynamics and Heat Transfer of Liquid Nitrogen Laminar Falling Films in Cryogenic Heat Exchanger. Volume 9: Heat Transfer, Fluid Flows, and Thermal Systems, Parts A, B and C. 2009; ():595-599.
Chicago/Turabian StyleYing-Bai Xie; Cheng Zhao; Jian-Cheng Tang; Ying-Cheng Mai. 2009. "Hydrodynamics and Heat Transfer of Liquid Nitrogen Laminar Falling Films in Cryogenic Heat Exchanger." Volume 9: Heat Transfer, Fluid Flows, and Thermal Systems, Parts A, B and C , no. : 595-599.
Liyong Lun; Yingbai Xie. Gas Turbine Cycle Recovering Pressure Energy of Natural Gas Transportation Pipelines by Vortex Tube. 6th International Energy Conversion Engineering Conference (IECEC) 2008, 1 .
AMA StyleLiyong Lun, Yingbai Xie. Gas Turbine Cycle Recovering Pressure Energy of Natural Gas Transportation Pipelines by Vortex Tube. 6th International Energy Conversion Engineering Conference (IECEC). 2008; ():1.
Chicago/Turabian StyleLiyong Lun; Yingbai Xie. 2008. "Gas Turbine Cycle Recovering Pressure Energy of Natural Gas Transportation Pipelines by Vortex Tube." 6th International Energy Conversion Engineering Conference (IECEC) , no. : 1.