Patents by Inventor Qiuwang Wang
Qiuwang Wang has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11971223Abstract: The present invention relates to the field of printed circuit heat exchangers, and in particular, to a modular square-circular composite channel printed circuit heat exchanger. The modular square-circular composite channel printed circuit heat exchanger comprises a shell, wherein the shell is divided into an inlet diverter section, a first parallel heat exchange section, a core heat exchange section, a second parallel heat exchange section, and an outlet combiner section from left to right, a plurality of square fin channels and circular micro-channels are uniformly arranged in the shell along a length direction of the shell. According to the present invention, a ratio of an average thermal resistance of a hot side to an average thermal resistance of a cold side is close to 1, which ensures the heat exchange efficiency while taking into the account structure safety and prevents the local over-temperature.Type: GrantFiled: November 21, 2023Date of Patent: April 30, 2024Assignee: XI'AN JIAOTONG UNIVERSITYInventors: Ting Ma, Dongjun Xu, Zhendong Han, Qiuwang Wang
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Publication number: 20240085115Abstract: The present invention relates to the field of printed circuit heat exchangers, and in particular, to a modular square-circular composite channel printed circuit heat exchanger. The modular square-circular composite channel printed circuit heat exchanger comprises a shell, wherein the shell is divided into an inlet diverter section, a first parallel heat exchange section, a core heat exchange section, a second parallel heat exchange section, and an outlet combiner section from left to right, a plurality of square fin channels and circular micro-channels are uniformly arranged in the shell along a length direction of the shell. According to the present invention, a ratio of an average thermal resistance of a hot side to an average thermal resistance of a cold side is close to 1, which ensures the heat exchange efficiency while taking into the account structure safety and prevents the local over-temperature.Type: ApplicationFiled: November 21, 2023Publication date: March 14, 2024Inventors: Ting Ma, Dongjun Xu, Zhendong Han, Qiuwang Wang
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Publication number: 20230081397Abstract: The present application provides an anti-corrosion super-slippery aluminum capillary tube and method and device for preparing the same. The preparation starts with the etching and drying of the inner walls of an aluminum capillary tube, which leads to the formation of an alumina capillary structure surface with micro-nano scale roughness. Next, the alumina capillary structure surface is modified to form a low surface energy modifying layer. Finally, the modified alumina capillary structure surface is wetted by a prewetting solution, so that a continuous film of the prewetting solution is formed on the inner wall of the aluminum capillary tube to function as a lubricating layer. The lubrication layer, on one hand, reduces the flow resistance for convey of liquid media, on the other hand, prevents the conveyed liquids from directly contacting the aluminum capillary tube body, thereby avoiding the corrosion of the aluminum capillary tube by corrosive liquids.Type: ApplicationFiled: September 14, 2022Publication date: March 16, 2023Inventors: Cunlu ZHAO, Huilong YAN, Yonghe CUI, Kai JIAO, Dongmin WEI, Fang QIAN, Qiuwang WANG
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Patent number: 11287194Abstract: The present discloses a gas-gas high-temperature heat exchanger, including a shell (12), a tube sheet (5), a low-temperature gas inlet pipeline (6) and an outlet pipeline (7), and a high temperature gas outlet (8), the tube is divided into a first heat transfer zone (1) and a second heat transfer zone (2), a low temperature gas (4) flows in the tube, the tube includes a insert component (9) and an outer fin (10); a heat transfer tube in the second heat transfer zone (2) has a sleeve structure, a high-temperature gas (3) flows in the core tube (13), the low temperature gas (4) flows in an annular region between the core tube (13) and an outer tube (14), the high-temperature gas (3) flows out of the core tube (13) and flows into the shell-side area of the second heat transfer zone (2) again.Type: GrantFiled: August 2, 2017Date of Patent: March 29, 2022Assignee: XI'AN JIAOTONG UNIVERSITYInventors: Qiuwang Wang, Pan Zhang, Ting Ma
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Patent number: 10976114Abstract: A heat storage unit, at least comprises one single-layer closed case (2) that has at least one heat exchange surface (8, 9) and a non-heat exchange surface; the internal space of the closed housing (2) is filled with a foam skeleton (4); the phase change medium (6) is homogeneous distributed in the voids of the foam skeleton (4), and forms a composite material (02) together with the foam skeleton (4), the composite material has a higher thermal conductivity coefficient than that of the pure phase transition medium (6); vibration particles (3) are made of shape memory alloy, pressed into strips and then filled into the voids of the foam copper frame (4) by filtration; the ultrasonic generator (05) emits ultrasonic to induce the vibration particles (3) to generate vibration, the vibration converts the liquid phase transition medium (6) from natural convection or pure heat conduction to forced convection.Type: GrantFiled: August 2, 2017Date of Patent: April 13, 2021Assignee: XI'AN JIAOTONG UNIVERSITYInventors: Qiuwang Wang, Yuchen Pu, Zuowei Wang, Ziliang Zhu, Zhuo Zhang, Lei Zhu, Mengwei Zhang, Ting Ma, Xinyi Li
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Publication number: 20200300557Abstract: A heat storage unit, at least comprises one single-layer closed case (2) that has at least one heat exchange surface (8, 9) and a non-heat exchange surface; the internal space of the closed housing (2) is filled with a foam skeleton (4); the phase change medium (6) is homogeneous distributed in the voids of the foam skeleton (4), and forms a composite material (02) together with the foam skeleton (4), the composite material has a higher thermal conductivity coefficient than that of the pure phase transition medium (6); vibration particles (3) are made of shape memory alloy, pressed into strips and then filled into the voids of the foam copper frame (4) by filtration; the ultrasonic generator (05) emits ultrasonic to induce the vibration particles (3) to generate vibration, the vibration converts the liquid phase transition medium (6) from natural convection or pure heat conduction to forced convection.Type: ApplicationFiled: August 2, 2017Publication date: September 24, 2020Applicant: XI'AN JIAOTONG UNIVERSITYInventors: Qiuwang WANG, Yuchen PU, Zuowei WANG, Ziliang ZHU, Zhuo ZHANG, Lei ZHU, Mengwei ZHANG, Ting MA, Xinyi LI
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Publication number: 20200300559Abstract: The present discloses a gas-gas high-temperature heat exchanger, including a shell (12), a tube sheet (5), a low-temperature gas inlet pipeline (6) and an outlet pipeline (7), and a high temperature gas outlet (8), the tube is divided into a first heat transfer zone (1) and a second heat transfer zone (2), a low temperature gas (4) flows in the tube, the tube includes a insert component (9) and an outer fin (10); a heat transfer tube in the second heat transfer zone (2) has a sleeve structure, a high-temperature gas (3) flows in the core tube (13), the low temperature gas (4) flows in an annular region between the core tube (13) and an outer tube (14), the high-temperature gas (3) flows out of the core tube (13) and flows into the shell-side area of the second heat transfer zone (2) again.Type: ApplicationFiled: August 2, 2017Publication date: September 24, 2020Applicant: XI'AN JIAOTONG UNIVERSITYInventors: Qiuwang WANG, Pan ZHANG, Ting MA
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Patent number: 10627133Abstract: A heat exchanger, comprising at least a double shell, wherein the lower portion of the inner space of the inner shell is filled with liquid phase change medium, and at least one coiler is provided in the upper portion. The heated fluid flows in the coiler. After the downstream side pipe of the coiler is pierced through the inner shell, at least one surrounding pipe is formed in the cavity between the double shells. The bottom heat exchange plate of heat exchanger of the inner shell is located above the heat source. The cavity between the two shells forms the flue gas passage. After bottom heat exchange plate of the inner shell is heated by the heat source, the flue gas rises from the bottom of perimeter of the inner shell along the flue gas passage and the heat is transferred to the heated fluid in the surrounding pipe. The heat device using the heat exchanger according to the present invention can significantly improve the efficiency of heat utilization.Type: GrantFiled: August 2, 2016Date of Patent: April 21, 2020Assignee: XI'AN JIAOTONG UNIVERSITYInventors: Qiuwang Wang, Zhoutuo Tan, Yunjia Yao, Chengning Yao, Jiapei Yang, Yougang Ruan
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Publication number: 20190011150Abstract: A heat exchanger, comprising at least a double shell, wherein the lower portion of the inner space of the inner shell is filled with liquid phase change medium, and at least one coiler is provided in the upper portion. The heated fluid flows in the coiler. After the downstream side pipe of the coiler is pierced through the inner shell, at least one surrounding pipe is formed in the cavity between the double shells. The bottom heat exchange plate of heat exchanger of the inner shell is located above the heat source. The cavity between the two shells forms the flue gas passage. After bottom heat exchange plate of the inner shell is heated by the heat source, the flue gas rises from the bottom of perimeter of the inner shell along the flue gas passage and the heat is transferred to the heated fluid in the surrounding pipe. The heat device using the heat exchanger according to the present invention can significantly improve the efficiency of heat utilization.Type: ApplicationFiled: August 2, 2016Publication date: January 10, 2019Applicant: XI'AN JIAOTONG UNIVERSITYInventors: QIUWANG WANG, ZHOUTUO TAN, YUNJIA YAO, CHENGNING YAO, JIAPEI YANG, YOUGANG RUAN
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Patent number: 8540011Abstract: The present invention provides a single shell-pass shell-and-tube heat exchanger with helical baffles, where within a single pitch, the helical baffles are separated into inner and outer parts along the radial direction of the shell. In the central portion of the inner space of the shell, an inner non-continuous helical form is employed; in other portion outside the central portion, doughnut shaped helical baffles with continuous curved surfaces are arranged to form an outer continuous helical baffle, and the outer helical baffles are arranged to surround the inner helical baffles. Furthermore, the present invention relates to a multiple shell-pass shell-and-tube heat exchanger with helical baffles, in which complete continuous helical baffles are provided in shell-sides other than the inner shell-pass, while non-continuous helical baffles or other flow guide means are employed in the inner shell-pass.Type: GrantFiled: April 21, 2010Date of Patent: September 24, 2013Assignee: Xi'an Jiaotong UniversityInventors: Qiuwang Wang, Qiuyang Chen, Dongjie Zhang, Min Zeng, Yining Wu, Qiang Gao
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Publication number: 20110094720Abstract: The present invention provides a single shell-pass shell-and-tube heat exchanger with helical baffles, where within a single pitch, the helical baffles are separated into inner and outer parts along the radial direction of the shell. In the central portion of the inner space of the shell, an inner non-continuous helical form is employed; in other portion outside the central portion, doughnut shaped helical baffles with continuous curved surfaces are arranged to form an outer continuous helical baffle, and the outer helical baffles are arranged to surround the inner helical baffles. Furthermore, the present invention relates to a multiple shell-pass shell-and-tube heat exchanger with helical baffles, in which complete continuous helical baffles are provided in shell-sides other than the inner shell-pass, while non-continuous helical baffles or other flow guide means are employed in the inner shell-pass.Type: ApplicationFiled: April 21, 2010Publication date: April 28, 2011Applicant: Xi'an Jiaotong UniversityInventors: Qiuwang Wang, Qiuyang Chen, Dongjie Zhang, Min Zeng, Yining Wu, Qiang Gao
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Patent number: 7740057Abstract: The present invention provides a single shell-pass shell-and-tube heat exchanger with helical baffles, where within a single pitch, the helical baffles are separated into inner and outer parts along the radial direction of the shell. In the central portion of the inner space of the shell, an inner non-continuous helical form is employed; in other portion outside the central portion, doughnut shaped helical baffles with continuous curved surfaces are arranged to form an outer continuous helical baffle, and the outer helical baffles are arranged to surround the inner helical baffles. Furthermore, the present invention relates to a multiple shell-pass shell-and-tube heat exchanger with helical baffles, in which complete continuous helical baffles are provided in shell-sides other than the inner shell-pass, while non-continuous helical baffles or other flow guide means are employed in the inner shell-pass.Type: GrantFiled: December 28, 2007Date of Patent: June 22, 2010Assignee: Xi'An Jiaotong UniversityInventors: Qiuwang Wang, Qiuyang Chen, Dongjie Zhang, Min Zeng, Yining Wu, Qiang Gao
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Publication number: 20080190593Abstract: The present invention provides a single shell-pass shell-and-tube heat exchanger with helical baffles, where within a single pitch, the helical baffles are separated into inner and outer parts along the radial direction of the shell. In the central portion of the inner space of the shell, an inner non-continuous helical form is employed; in other portion outside the central portion, doughnut shaped helical baffles with continuous curved surfaces are arranged to form an outer continuous helical baffle, and the outer helical baffles are arranged to surround the inner helical baffles. Furthermore, the present invention relates to a multiple shell-pass shell-and-tube heat exchanger with helical baffles, in which complete continuous helical baffles are provided in shell-sides other than the inner shell-pass, while non-continuous helical baffles or other flow guide means are employed in the inner shell-pass.Type: ApplicationFiled: December 28, 2007Publication date: August 14, 2008Applicant: Xi'an Jiaotong UniversityInventors: Qiuwang Wang, Qiuyang Chen, Dongjie Zhang, Min Zeng, Yining Wu, Qiang Gao