公开(公告)号：US11710845B2

公开(公告)日：2023-07-25

申请号：US16202019

申请日：2018-11-27

申请人： University of Maryland, College Park

发明人： Chunsheng Wang ,  Ye Tao ,  K. Reinhard Radermacher ,  Yunho Hwang ,  Joseph Patrick Baker ,  Zhenyuan Mei

IPC分类号： H01M8/2483 ,  H01M8/0271 ,  H01M8/0263 ,  H01M8/0267 ,  H01M8/0265 ,  H01M8/241 ,  H01M8/04119 ,  H01M8/04014 ,  H01M8/0438 ,  H01M8/14

CPC分类号： H01M8/2483 ,  H01M8/0263 ,  H01M8/0265 ,  H01M8/0267 ,  H01M8/0271 ,  H01M8/04022 ,  H01M8/04164 ,  H01M8/04432 ,  H01M8/241 ,  H01M2008/147

摘要： An electrochemical module (EM) transfers a fluid across a membrane thereof using oxygen as a carrier gas. The EM has an anion exchange membrane (AEM) disposed between a first and second electrodes, each of which includes a catalyst. At an inlet side, the catalyst facilitates reaction of the fluid with carrier gas, such that an anion is formed. The anion is transported across the AEM in the presence of an electric field applied to the electrodes. At an outlet side, the catalyst facilitates dissociation of the anion back to the fluid and carrier gas. In some embodiments, the fluid comprises carbon dioxide, and the transporting by the EM is part of a heating/cooling cycle or a power generation cycle, or is used to capture carbon dioxide for storage or regeneration of stale air. In some embodiments, the fluid comprises water vapor, and the transporting by the EM dehumidifies air.

公开(公告)号：US10801750B2

公开(公告)日：2020-10-13

申请号：US15735538

申请日：2016-06-11

申请人： University of Maryland, College Park

发明人： K. Reinhard Radermacher ,  Vikrant C. Aute ,  Yunho Hwang ,  Jiazhen Ling ,  Jelena Srebric ,  Jan Muehlbauer ,  Rohit Dhumane ,  Yilin Du ,  Daniel Alejandro Dalgo Reyes ,  Nicholas W. Mattise

IPC分类号： F24H9/18 ,  F24F5/00 ,  F24H7/04 ,  F24H7/06 ,  F24H9/20 ,  G05D22/02 ,  G05D23/19 ,  A61B5/01 ,  A61B5/024 ,  A61B5/053

摘要： Despite otherwise uncomfortable conditions in a surrounding environment, a customizable microenvironment can be created around a user to maintain a comfortable temperature and/or humidity level using a comfort unit. For example, the environment may be an office building where conditions are out of the comfortable range to save on energy or for other reasons, a factory/shop environment that is poorly conditioned, or an outdoor location with little to no conditioning. A sensing unit can monitor biometric and environmental data and can determine a comfort level of the user. The comfort unit can then dynamically respond to the determined comfort level and adjust the microenvironment to improve the user's comfort level. The comfort unit can follow the user as the user moves within the macro-environment, or can otherwise move within the macro-environment to achieve certain functions, such as recharging or spatial shifting of thermal load within the overall macro-environment.

公开(公告)号：US11131029B2

公开(公告)日：2021-09-28

申请号：US16201995

申请日：2018-11-27

申请人： University of Maryland, College Park

发明人： Chunsheng Wang ,  Ye Tao ,  K. Reinhard Radermacher ,  Yunho Hwang

IPC分类号： C25B9/10 ,  C25B9/23 ,  C07C21/18 ,  C25B13/08 ,  C25B15/08 ,  C25B15/02 ,  H01M4/90 ,  H01M8/0221 ,  H01M8/04701 ,  H01M8/04537 ,  H01M8/04746 ,  H01M8/0284

摘要： Hydrofluoroolefin (HFO) fluid can be transported through an electrochemical device, which has a proton exchange membrane (PEM) disposed between a pair of gas-permeable electrodes that include respective catalysts. At an inlet side, the catalyst facilitates reaction of HFO with hydrogen carrier gas. The resulting cation is transported across PEM in the presence of an electric field applied to the electrodes. At an outlet side, the catalyst of the opposing electrode facilitates dissociation of the cation back into HFO and hydrogen. In some embodiments, the transported HFO has a higher pressure than that before the electrochemical device. In some embodiments, the electrochemical device can be operated in reverse to expand HFO fluid and/or to recapture power. The electrochemical device can thus be used as a compressor or expander for vapor-phase HFO or as a pump or expander for liquid-phase HFO, for example, in power generation or heating/cooling cycles.

公开(公告)号：US10823465B2

公开(公告)日：2020-11-03

申请号：US15996450

申请日：2018-06-02

申请人： University of Maryland, College Park

发明人： K. Reinhard Radermacher ,  Ichiro Takeuchi ,  Yunho Hwang ,  Yiming Wu ,  Suxin Qian ,  Jiazhen Ling

IPC分类号： F28D17/00 ,  F25B23/00 ,  C09K5/14 ,  C09K5/10

摘要： A system for heating/cooling includes a plurality of thermoelastic modules. Each of the modules includes one or more structures formed of shape memory alloy, which converts from austenite to martensite upon application of a first stress and release latent heat from the conversion. During a first part of a heating/cooling cycle, a first module is stressed to cause conversion. The latent heat released from the first module is rejected to a heat sink while a second unstressed module absorbs heat from a heat source. During a second part of the heating/cooling cycle, the first and second modules are connected together to transfer heat therebetween for heat recovery. The cycle can be repeated indefinitely with the first and second modules alternating roles. Structures of the thermoelastic cooling material and specific applications thereof are also disclosed.

公开(公告)号：US10808159B2

公开(公告)日：2020-10-20

申请号：US16180649

申请日：2018-11-05

申请人： University of Maryland, College Park ,  Jun Cui

发明人： Ichiro Takeuchi ,  Jun Cui ,  Manfred R. Wuttig ,  Yiming Wu ,  K. Reinhard Radermacher ,  Yunho Hwang ,  Jan Muehlbauer

IPC分类号： C09K5/14 ,  F25B23/00

摘要： A cooling system based on thermoelastic effect is provided. The system comprises a heat sink, a refrigerated space and a regenerator coupled to the refrigerated space and to the heat sink to pump heat from the refrigerated space to the heat sink. The regenerator comprises solid thermoelastic refrigerant materials capable of absorbing or releasing heat.