-
公开(公告)号：US20220243960A1
公开(公告)日：2022-08-04
申请号：US17585425
申请日：2022-01-26
Inventor： Yinhai ZHU , Peixue JIANG , Conghui LI
Abstract: The present disclosure relates to the technical field of heat pumps, in particular to an air source CO2 heat pump system for preventing an evaporator from frosting by using heat of a heat regenerator. The air source CO2 heat pump system mainly includes an air source heat pump system, a regenerative heat exchange tank and a cooling pump. Through the regenerative heat exchange tank, on the one hand, the temperature drop of regenerative heat of the system is further increased and throttling loss is reduced; on the other hand, the heat generated by the regenerative temperature drop is configured for heat storage used for defrosting, and configured for overheating temperature rise.
-
公开(公告)号：US20210198556A1
公开(公告)日：2021-07-01
申请号：US17010938
申请日：2020-09-03
Inventor： Peixue JIANG , Ruina XU , Feng HUANG
IPC: C09K8/594
Abstract: The present invention provides an enhanced oil recovery method by nanofluid-assisted CO2 huff-n-puff. A nanofluid is injected into an injection well in an oil reservoir formation having hydrophilic wetting characteristics, and soaking is performed; in the soaking stage, after the nanofluid tends to replace crude oil to occupy dead-ends of fractures and pores, and liquid CO2 is injected; and in the process of production, CO2 originally dissolved in the formation fluid reaches a supersaturated state. As a result, CO2 preferentially nucleates at the nanofluid side to generate CO2 bubbles, grows and expands with the continuous reduction of formation pressure, and pushes crude oil near the dead-ends of fractures and pores to move outward, thereby improving the recovery efficiency.
-
公开(公告)号：US20220220982A1
公开(公告)日：2022-07-14
申请号：US17564109
申请日：2021-12-28
Applicant: Tsinghua University
Inventor： Yinhai ZHU , Peixue JIANG
Abstract: The present disclosure relates to the technical field of energy and power, in particular to an ejector with a core needle cooled by cooling medium. In the ejector with a core needle cooled by cooling medium, a cooling section is arranged between a stepping motor and a nozzle; the stepping motor, the cooling section and the nozzle are arranged coaxially, a partition plate and a sealing element are used to isolate the cooling medium from the primary flow medium, and the cooling medium is introduced into the cooling section to effectively cool the core needle therein, without affecting the adjustment function of the core needle for an area of the nozzle throat, so as to effectively improve the performance of the ejector. As the core needle is cooled, the adjustable ejector can be used in the primary flow fields with high temperature.
-
Patent Agency Ranking
公开(公告)号：US20230349943A1
公开(公告)日：2023-11-02
申请号：US18193383
申请日：2023-03-30
Applicant: Tsinghua University
Inventor： Yinhai ZHU , Peixue JIANG , Yusen WANG
Abstract: This application discloses a fluid measuring method and device and electronic equipment. When a fluid flows in a target pipeline, high-speed cameras obtain a first sampling image set of a tracer particle cluster in the fluid passing a front end of the target pipeline and a second sampling image set of the tracer particle cluster passing a rear end of the target pipeline, thereby obtaining passing time distribution information of the tracer particle cluster passing through the target pipeline. A mean residence time of the fluid in the high-pressure target pipeline is obtained based on the passing time distribution information. In this way, the accuracy of non-intrusive online measurement of the mean residence time of the supercritical pressure fluid in the pipeline is improved.
-
公开(公告)号：US20220027539A1
公开(公告)日：2022-01-27
申请号：US17368104
申请日：2021-07-06
Applicant: Tsinghua University
Inventor： Ruina XU , Peixue JIANG , Chao WANG , Zhipeng ZHANG
Abstract: A method and a system for manufacturing a heat exchanger for supercritical pressure fluid are provided. The manufacturing method includes: obtaining boundary conditions of the heat exchanger, adjusting a preliminary framework of the heat exchanger, dividing each of fluid passages along a fluid flow direction and establishing a thermal equilibrium control model, constructing a machine heat transfer model in combination with a Gaussian regression process and a Cokriging method based on the thermal equilibrium control model, determining on-way thermal parameters about the working fluids flowing and transferring heat, determining a heat transfer area according to the on-way thermal parameters, and determining whether the heat transfer area meets a target heat transfer area. If the heat transfer area meets the target heat transfer area the heat exchanger is manufactured according to the preliminary framework of the heat exchanger. If the heat transfer area does not meet the target transfer area, the primary framework of the heat exchanger is readjusted until the heat transfer area meets the target heat transfer area.
-
公开(公告)号：US20220223893A1
公开(公告)日：2022-07-14
申请号：US17564111
申请日：2021-12-28
Applicant: Tsinghua University
Inventor： Yinhai ZHU , Peixue JIANG
IPC: H01M8/1233 , H01M8/04701 , H01M8/0276 , H01M8/0444
Abstract: The present disclosure relates to the technical field of fuel cells, in particular to an anode recirculation system with an ejector for a solid oxide fuel cell. The heat exchanger is adopted in the anode recirculation system for the solid oxide fuel cell, the temperature of the fuel gas can be increased through heat exchange between the fuel gas as the primary flow medium and the cell exhaust as the secondary flow medium. The fuel at room temperature stored in the fuel tank is used as the cooling medium of the valve core needle to cool the valve core needle, so that it is ensured that a temperature of the stepping motor does not exceed a failure temperature.
-
公开(公告)号：US20240159719A1
公开(公告)日：2024-05-16
申请号：US18506428
申请日：2023-11-10
Applicant: TSINGHUA UNIVERSITY
Inventor： Peixue JIANG , Yinhai ZHU , Yusen WANG
CPC classification number: G01N30/78 , G01N30/32 , G01N30/66 , G01N30/68 , G01N30/7206 , G01N2030/025
Abstract: A system and method for detecting a fluid mixture are provided. The system includes a pipeline assembly, a first valve, a gas chromatograph and a vacuum pump. The pipeline assembly includes a first pipeline and a second pipeline. The first valve is connected to the first pipeline and controls a flow of the fluid mixture obtained from a reaction in a reactor. The gas chromatograph is provided with a sample injection end and a sample output end, where the sample injection end is connected to an end of the first pipeline away from the first valve; and the sample output end is connected to the second pipeline. The vacuum pump is connected to an end of the second pipeline away from the gas chromatograph.
-
8.发明申请公开(公告)号：US20170211550A1
公开(公告)日：2017-07-27
申请号：US15312926
申请日：2015-06-03
Applicant: Tsinghua University
Inventor： Peixue JIANG , Fuzhen ZHANG , Ruina XU
CPC classification number: F03G6/04 , F02G1/044 , F02G1/05 , F02G1/057 , F02G2254/30 , Y02E10/10 , Y02E10/46
Abstract: A combined power generation system based on geothermal energy and solar energy and a power generation method thereof are provided. The system includes: at least three injection wells; at least three production wells; at least three connected paths in a reservoir connected with gas outlets of the at least three injection wells and gas inlets of the at least three production wells; at least three geothermal turbines having gas inlets connected with gas outlets of the at least three production wells; a gas cooler; a first regenerator having a high-pressure gas inlet connected with a gas outlet of the upmost production well; a second regenerator having a high-pressure gas inlet connected with one geothermal turbine; a solar receiver having a gas inlet connected with the second regenerator; and a solar turbine having a gas inlet connected with the solar receiver and a gas outlet connected with the second regenerator.
-
-
-
-
-
-
-
Search Results
8
records
(took 0.012 seconds)
