The Experts below are selected from a list of 312 Experts worldwide ranked by ideXlab platform
Hongfei Zheng - One of the best experts on this subject based on the ideXlab platform.
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a novel intercooled series expansion refrigeration liquefaction cycle using Pinch Technology
Applied Thermal Engineering, 2019Co-Authors: Gang Lei, Huifang Kang, Hongfei Zheng, Tianxiang Wang, Lufeng Yang, Zhiyong XuanAbstract:Abstract This paper introduces Pinch Technology into the analysis of large-scale cryogenic processes. This study develops temperature-enthalpy diagrams for different cryogenic cycles based on Pinch Technology. This enables a better understanding of the development of cryogenic systems to analyze the matching relationships among different components. It is found that the expander has the other functions that parallel or cascade expanders can influence the temperature matched characteristics of the cold and hot streams as well as the irreversibility of heat transfer in cryogenic systems. Based on an analysis of Pinch Technology, a novel intercooled series expansion refrigeration/liquefaction cycle is proposed and analyzed. In the intercooled series expansion refrigerator/liquefier, the expander and heat exchanger are connected in serial. This paper provides an analysis and design ideas for large-scale cryogenic systems.
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A novel intercooled series expansion refrigeration/liquefaction cycle using Pinch Technology
Applied Thermal Engineering, 2019Co-Authors: Gang Lei, Huifang Kang, Hongfei Zheng, Tianxiang Wang, Lufeng Yang, Zhiyong XuanAbstract:Abstract This paper introduces Pinch Technology into the analysis of large-scale cryogenic processes. This study develops temperature-enthalpy diagrams for different cryogenic cycles based on Pinch Technology. This enables a better understanding of the development of cryogenic systems to analyze the matching relationships among different components. It is found that the expander has the other functions that parallel or cascade expanders can influence the temperature matched characteristics of the cold and hot streams as well as the irreversibility of heat transfer in cryogenic systems. Based on an analysis of Pinch Technology, a novel intercooled series expansion refrigeration/liquefaction cycle is proposed and analyzed. In the intercooled series expansion refrigerator/liquefier, the expander and heat exchanger are connected in serial. This paper provides an analysis and design ideas for large-scale cryogenic systems.
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Comparative analysis of regenerative and air-extraction multi-stage humidification–dehumidification desalination system using Pinch Technology
Desalination, 2016Co-Authors: Huifang Kang, Teng Wang, Hongfei ZhengAbstract:Abstract To reduce energy consumption, the multi-stage type is a promising Technology used in the humidification–dehumidification desalination system. Two types of multi-stage desalination system (regenerative and air-extraction multi-stage desalination) were proposed, and were studied and improved relatively separately. So, this paper comparatively investigated the two typical desalination systems based on the Pinch Technology. The Pinch analysis models of regenerative and air-extraction multi-stage desalination were established and numerically analyzed. Subsequently, the effects of the Pinch point temperature difference and the number of stage on the performance of the two desalination systems were comparatively analyzed. The result showed that the Gained Output Ratio (GOR) of regenerative multi-stage desalination was worse than that of air-extraction multi-stage desalination, while the Recovery Ratio (RR) of regenerative multi-stage desalination was better. Furthermore, when the single-stage system upgraded to two-stage system, the performance was significantly improved. But as the number of stage increases further, the enhancement effect is gradually weakened and even the performance becomes worse. The research content of this paper will help to select the device in the design of the desalination system.
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comparative analysis of regenerative and air extraction multi stage humidification dehumidification desalination system using Pinch Technology
Desalination, 2016Co-Authors: Huifang Kang, Teng Wang, Hongfei ZhengAbstract:Abstract To reduce energy consumption, the multi-stage type is a promising Technology used in the humidification–dehumidification desalination system. Two types of multi-stage desalination system (regenerative and air-extraction multi-stage desalination) were proposed, and were studied and improved relatively separately. So, this paper comparatively investigated the two typical desalination systems based on the Pinch Technology. The Pinch analysis models of regenerative and air-extraction multi-stage desalination were established and numerically analyzed. Subsequently, the effects of the Pinch point temperature difference and the number of stage on the performance of the two desalination systems were comparatively analyzed. The result showed that the Gained Output Ratio (GOR) of regenerative multi-stage desalination was worse than that of air-extraction multi-stage desalination, while the Recovery Ratio (RR) of regenerative multi-stage desalination was better. Furthermore, when the single-stage system upgraded to two-stage system, the performance was significantly improved. But as the number of stage increases further, the enhancement effect is gradually weakened and even the performance becomes worse. The research content of this paper will help to select the device in the design of the desalination system.
Huifang Kang - One of the best experts on this subject based on the ideXlab platform.
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a novel intercooled series expansion refrigeration liquefaction cycle using Pinch Technology
Applied Thermal Engineering, 2019Co-Authors: Gang Lei, Huifang Kang, Hongfei Zheng, Tianxiang Wang, Lufeng Yang, Zhiyong XuanAbstract:Abstract This paper introduces Pinch Technology into the analysis of large-scale cryogenic processes. This study develops temperature-enthalpy diagrams for different cryogenic cycles based on Pinch Technology. This enables a better understanding of the development of cryogenic systems to analyze the matching relationships among different components. It is found that the expander has the other functions that parallel or cascade expanders can influence the temperature matched characteristics of the cold and hot streams as well as the irreversibility of heat transfer in cryogenic systems. Based on an analysis of Pinch Technology, a novel intercooled series expansion refrigeration/liquefaction cycle is proposed and analyzed. In the intercooled series expansion refrigerator/liquefier, the expander and heat exchanger are connected in serial. This paper provides an analysis and design ideas for large-scale cryogenic systems.
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A novel intercooled series expansion refrigeration/liquefaction cycle using Pinch Technology
Applied Thermal Engineering, 2019Co-Authors: Gang Lei, Huifang Kang, Hongfei Zheng, Tianxiang Wang, Lufeng Yang, Zhiyong XuanAbstract:Abstract This paper introduces Pinch Technology into the analysis of large-scale cryogenic processes. This study develops temperature-enthalpy diagrams for different cryogenic cycles based on Pinch Technology. This enables a better understanding of the development of cryogenic systems to analyze the matching relationships among different components. It is found that the expander has the other functions that parallel or cascade expanders can influence the temperature matched characteristics of the cold and hot streams as well as the irreversibility of heat transfer in cryogenic systems. Based on an analysis of Pinch Technology, a novel intercooled series expansion refrigeration/liquefaction cycle is proposed and analyzed. In the intercooled series expansion refrigerator/liquefier, the expander and heat exchanger are connected in serial. This paper provides an analysis and design ideas for large-scale cryogenic systems.
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Comparative analysis of regenerative and air-extraction multi-stage humidification–dehumidification desalination system using Pinch Technology
Desalination, 2016Co-Authors: Huifang Kang, Teng Wang, Hongfei ZhengAbstract:Abstract To reduce energy consumption, the multi-stage type is a promising Technology used in the humidification–dehumidification desalination system. Two types of multi-stage desalination system (regenerative and air-extraction multi-stage desalination) were proposed, and were studied and improved relatively separately. So, this paper comparatively investigated the two typical desalination systems based on the Pinch Technology. The Pinch analysis models of regenerative and air-extraction multi-stage desalination were established and numerically analyzed. Subsequently, the effects of the Pinch point temperature difference and the number of stage on the performance of the two desalination systems were comparatively analyzed. The result showed that the Gained Output Ratio (GOR) of regenerative multi-stage desalination was worse than that of air-extraction multi-stage desalination, while the Recovery Ratio (RR) of regenerative multi-stage desalination was better. Furthermore, when the single-stage system upgraded to two-stage system, the performance was significantly improved. But as the number of stage increases further, the enhancement effect is gradually weakened and even the performance becomes worse. The research content of this paper will help to select the device in the design of the desalination system.
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comparative analysis of regenerative and air extraction multi stage humidification dehumidification desalination system using Pinch Technology
Desalination, 2016Co-Authors: Huifang Kang, Teng Wang, Hongfei ZhengAbstract:Abstract To reduce energy consumption, the multi-stage type is a promising Technology used in the humidification–dehumidification desalination system. Two types of multi-stage desalination system (regenerative and air-extraction multi-stage desalination) were proposed, and were studied and improved relatively separately. So, this paper comparatively investigated the two typical desalination systems based on the Pinch Technology. The Pinch analysis models of regenerative and air-extraction multi-stage desalination were established and numerically analyzed. Subsequently, the effects of the Pinch point temperature difference and the number of stage on the performance of the two desalination systems were comparatively analyzed. The result showed that the Gained Output Ratio (GOR) of regenerative multi-stage desalination was worse than that of air-extraction multi-stage desalination, while the Recovery Ratio (RR) of regenerative multi-stage desalination was better. Furthermore, when the single-stage system upgraded to two-stage system, the performance was significantly improved. But as the number of stage increases further, the enhancement effect is gradually weakened and even the performance becomes worse. The research content of this paper will help to select the device in the design of the desalination system.
Zhiyong Xuan - One of the best experts on this subject based on the ideXlab platform.
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a novel intercooled series expansion refrigeration liquefaction cycle using Pinch Technology
Applied Thermal Engineering, 2019Co-Authors: Gang Lei, Huifang Kang, Hongfei Zheng, Tianxiang Wang, Lufeng Yang, Zhiyong XuanAbstract:Abstract This paper introduces Pinch Technology into the analysis of large-scale cryogenic processes. This study develops temperature-enthalpy diagrams for different cryogenic cycles based on Pinch Technology. This enables a better understanding of the development of cryogenic systems to analyze the matching relationships among different components. It is found that the expander has the other functions that parallel or cascade expanders can influence the temperature matched characteristics of the cold and hot streams as well as the irreversibility of heat transfer in cryogenic systems. Based on an analysis of Pinch Technology, a novel intercooled series expansion refrigeration/liquefaction cycle is proposed and analyzed. In the intercooled series expansion refrigerator/liquefier, the expander and heat exchanger are connected in serial. This paper provides an analysis and design ideas for large-scale cryogenic systems.
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A novel intercooled series expansion refrigeration/liquefaction cycle using Pinch Technology
Applied Thermal Engineering, 2019Co-Authors: Gang Lei, Huifang Kang, Hongfei Zheng, Tianxiang Wang, Lufeng Yang, Zhiyong XuanAbstract:Abstract This paper introduces Pinch Technology into the analysis of large-scale cryogenic processes. This study develops temperature-enthalpy diagrams for different cryogenic cycles based on Pinch Technology. This enables a better understanding of the development of cryogenic systems to analyze the matching relationships among different components. It is found that the expander has the other functions that parallel or cascade expanders can influence the temperature matched characteristics of the cold and hot streams as well as the irreversibility of heat transfer in cryogenic systems. Based on an analysis of Pinch Technology, a novel intercooled series expansion refrigeration/liquefaction cycle is proposed and analyzed. In the intercooled series expansion refrigerator/liquefier, the expander and heat exchanger are connected in serial. This paper provides an analysis and design ideas for large-scale cryogenic systems.
Hefei Zhang - One of the best experts on this subject based on the ideXlab platform.
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performance optimization of solar humidification dehumidification desalination process using Pinch Technology
Desalination, 2005Co-Authors: Shaobo Hou, Hefei ZhangAbstract:Abstract This paper presents a method of performance optimization of solar humidification–dehumidification desalination (HDD) process using Pinch Technology. Pinch Technology is used in the humidification process to determine the maximum possible saturated air temperature and the temperature of water rejected from the unit, and then in dehumidification process to determine the temperature of water leaving from heat exchanger. From Pinch chart, all the thermal energy rejected, supplied and recovered are determined easily. Both the optimum mass flow rate ratio of water to dry air and maximum thermal energy recovery rate is obtained by adjusting mass flow rate ratio of water to dry air. The curve of optimum mass flow rate ratio of water to dry air at a different spraying water temperature is acquired by changing spraying water temperature follow the above steps. The analysis method using Pinch Technology in HDD process proves a very simple, visual and efficient. From Pinch Technology analysis, there exits an optimummass flow rate ratio of water to dry air if given the temperature of spraying water and cooling water. The energy recovery rate can reach 0.67 at the optimum mass flows rate ratio when the spraying water temperature is 80°C and cooling water temperature is 30°C. The optimum mass flows rate ratio of water to dry air decreases with cooling water temperature declines when the spraying water temperature remains unchanged. If the minimum temperature difference at Pinch points are 1°C, the energy recovery rate could reach 0.75.
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Performance optimization of solar humidification–dehumidification desalination process using Pinch Technology
Desalination, 2005Co-Authors: Shaobo Hou, Hefei ZhangAbstract:Abstract This paper presents a method of performance optimization of solar humidification–dehumidification desalination (HDD) process using Pinch Technology. Pinch Technology is used in the humidification process to determine the maximum possible saturated air temperature and the temperature of water rejected from the unit, and then in dehumidification process to determine the temperature of water leaving from heat exchanger. From Pinch chart, all the thermal energy rejected, supplied and recovered are determined easily. Both the optimum mass flow rate ratio of water to dry air and maximum thermal energy recovery rate is obtained by adjusting mass flow rate ratio of water to dry air. The curve of optimum mass flow rate ratio of water to dry air at a different spraying water temperature is acquired by changing spraying water temperature follow the above steps. The analysis method using Pinch Technology in HDD process proves a very simple, visual and efficient. From Pinch Technology analysis, there exits an optimummass flow rate ratio of water to dry air if given the temperature of spraying water and cooling water. The energy recovery rate can reach 0.67 at the optimum mass flows rate ratio when the spraying water temperature is 80°C and cooling water temperature is 30°C. The optimum mass flows rate ratio of water to dry air decreases with cooling water temperature declines when the spraying water temperature remains unchanged. If the minimum temperature difference at Pinch points are 1°C, the energy recovery rate could reach 0.75.
Gang Lei - One of the best experts on this subject based on the ideXlab platform.
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a novel intercooled series expansion refrigeration liquefaction cycle using Pinch Technology
Applied Thermal Engineering, 2019Co-Authors: Gang Lei, Huifang Kang, Hongfei Zheng, Tianxiang Wang, Lufeng Yang, Zhiyong XuanAbstract:Abstract This paper introduces Pinch Technology into the analysis of large-scale cryogenic processes. This study develops temperature-enthalpy diagrams for different cryogenic cycles based on Pinch Technology. This enables a better understanding of the development of cryogenic systems to analyze the matching relationships among different components. It is found that the expander has the other functions that parallel or cascade expanders can influence the temperature matched characteristics of the cold and hot streams as well as the irreversibility of heat transfer in cryogenic systems. Based on an analysis of Pinch Technology, a novel intercooled series expansion refrigeration/liquefaction cycle is proposed and analyzed. In the intercooled series expansion refrigerator/liquefier, the expander and heat exchanger are connected in serial. This paper provides an analysis and design ideas for large-scale cryogenic systems.
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A novel intercooled series expansion refrigeration/liquefaction cycle using Pinch Technology
Applied Thermal Engineering, 2019Co-Authors: Gang Lei, Huifang Kang, Hongfei Zheng, Tianxiang Wang, Lufeng Yang, Zhiyong XuanAbstract:Abstract This paper introduces Pinch Technology into the analysis of large-scale cryogenic processes. This study develops temperature-enthalpy diagrams for different cryogenic cycles based on Pinch Technology. This enables a better understanding of the development of cryogenic systems to analyze the matching relationships among different components. It is found that the expander has the other functions that parallel or cascade expanders can influence the temperature matched characteristics of the cold and hot streams as well as the irreversibility of heat transfer in cryogenic systems. Based on an analysis of Pinch Technology, a novel intercooled series expansion refrigeration/liquefaction cycle is proposed and analyzed. In the intercooled series expansion refrigerator/liquefier, the expander and heat exchanger are connected in serial. This paper provides an analysis and design ideas for large-scale cryogenic systems.