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公开(公告)号：US11225703B2
公开(公告)日：2022-01-18
申请号：US16476047
申请日：2018-01-08
发明人： Robin Ihnfeldt , Sungho Jin , Renkun Chen , Xia Xu , Elizabeth Caldwell , Eunjeong Kim
摘要： This invention relates to magnetocaloric materials comprising ternary alloys useful for magnetic refrigeration applications. The disclosed ternary alloys are Cerium, Neodymium, and/or Gadolinium based compositions that are fairly inexpensive, and in some cases exhibit only 2nd order magnetic phase transitions near their curie temperature, thus there are no thermal and structural hysteresis losses. This makes these compositions attractive candidates for use in magnetic refrigeration applications. The performance of the disclosed materials is similar or better to many of the known expensive rare-earth based magnetocaloric materials.
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公开(公告)号：US20220013704A1
公开(公告)日：2022-01-13
申请号：US17295851
申请日：2019-11-20
发明人： Renkun Chen , Sahngki Hong
摘要： Thermoelectric devices (TE) devices may be used to power wearable electronics, such as watches and sensors by harvesting heat from the body. These TE devices may fully power or partially power the wearable devices to extend a usage time, or to recharge a battery. In other example embodiments, TE devices can be used to provide heating and/or cooling. The TE devices can be integrated into garments such as clothes, vests, and armbands for outdoor and indoor environments. For outdoor environments, applications include, but are not limited to, sports such as golfing, bicycling, running, walking, training, soccer, hiking, and other outdoor activities related to occupations, such as construction, fire-fighting, military operations, law enforcement, farming, underground mining, and so on. In other example embodiments, TE devices can be used to provide thermal camouflaging for people and objects so as to not be seen by thermal imaging devices.
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公开(公告)号：US10371416B2
公开(公告)日：2019-08-06
申请号：US14398722
申请日：2013-05-06
发明人： Sungho Jin , Renkun Chen , Zhaowei Liu , Tae Kyoung Kim
IPC分类号： F24S70/225 , F24S70/30 , F24S70/25 , G02B1/14 , G02B1/118 , G02B5/20 , G02B5/22 , B05D5/06 , G02B1/00 , G02B5/00 , B82Y20/00 , F24S70/60 , F24S70/20 , F24S20/20 , F24S10/70
摘要： Techniques, systems, devices and materials are disclosed for spectrally selective coatings for optical surfaces having high solar absorptivity, low infrared emissivity, and strong durability at elevated temperatures. In one aspect, a spectrally selective coating includes a substrate formed of a light absorbing material, and a composite material formed over the substrate and including nanoparticles dispersed in a dielectric material, in which the composite material forms a coating capable of absorbing solar energy in a selected spectrum and reflecting the solar energy in another selected spectrum.
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4.发明申请公开(公告)号：US20170138646A1
公开(公告)日：2017-05-18
申请号：US15290947
申请日：2016-10-11
CPC分类号： F25B21/00 , F25B21/02 , F25B2321/0021 , F25B2321/0022 , Y02B30/66
摘要： This invention relates to a cooling device which utilizes both thermoelectric and magnetocaloric mechanisms for enhanced cooling applications. The incorporation of a magnetocaloric mechanism into a thermoelectric device provides additional cooling on the cold side of the device, and may improve the device efficiency, which is useful for many industrial applications, including cooling of microelectronic devices. Embodiments of the invention provide a cooling device comprising a hot side, a cold side, at least one thermoelectric element, at least one magnetocaloric material, at least one permanent magnet, and at least one mechanical movement system. In some embodiments, the magnetocaloric component of the cooling device is optimized to provide enhanced cooling on the cold side of the cooling device.
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公开(公告)号：US11728074B2
公开(公告)日：2023-08-15
申请号：US16969858
申请日：2019-02-20
发明人： Robin Ihnfeldt , Eunjeong Kim , Sungho Jin , Renkun Chen , Xia Xu
CPC分类号： H01F1/015 , C22C28/00 , F25B21/00 , H01F1/058 , C22C2202/02 , F25B2321/002
摘要： This invention relates to magnetocaloric materials comprising alloys useful for magnetic refrigeration applications. In some embodiments, the disclosed alloys may be Cerium, Neodymium, and/or Gadolinium based compositions that are fairly inexpensive, and in some cases exhibit only 2nd order magnetic phase transitions near their curie temperature, thus there are limited thermal and structural hysteresis losses. This makes these compositions attractive candidates for use in magnetic refrigeration applications. Surprisingly, the performance of the disclosed materials is similar or better to many of the known expensive rare-earth based magnetocaloric materials.
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公开(公告)号：US20180066875A1
公开(公告)日：2018-03-08
申请号：US15694616
申请日：2017-09-01
发明人： Robin Veronica Ihnfeldt , Xia Xu , Renkun Chen , Sungho Jin , Jianlin Zheng
摘要： This invention relates to a cooling device which utilizes both thermoelectric and magnetocaloric mechanisms for enhanced cooling applications. Using high thermal conductivity magnetocaloric composites in conjunction with thermoelectric elements acting as thermal switches which are electrically coupled to a magnetization and demagnetization cycle enables the use of larger quantities of magnetocaloric material, and high efficiency solid state cooling can be achieved. Solid state cooling devices are useful for a variety of industrial applications which require cooling, such as, but not limited to cooling of microelectronic devices, cooling on space platforms, etc.
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公开(公告)号：US11819823B2
公开(公告)日：2023-11-21
申请号：US17466054
申请日：2021-09-03
发明人： Shuang Cui , Jason David Woods , Renkun Chen , Paul William Meyer
CPC分类号： B01J20/264 , B01J20/223 , B01J20/267 , B01J20/28035 , C08J3/24 , B01J2220/46 , B01J2220/66 , B01J2220/86 , C08J2333/26 , C08J2351/00
摘要： Thermo-responsive hydrogel composite (TRHC) desiccants having high adsorption capacities, fast adsorption/desorption rates, and low regeneration temperatures (Treg) compared to traditional desiccants. TRHC desiccants may be synthesized by freeze drying. The porous structures resulting from freeze drying copolymers of thermo-responsive polymers and/or hygroscopic agents may be combined with hygroscopic inorganic salts, resulting in TRHC desiccants having superior performance properties.
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公开(公告)号：US10184051B2
公开(公告)日：2019-01-22
申请号：US15125348
申请日：2015-03-13
发明人： Sungho Jin , Renkun Chen , Zhaowei Liu , Jaeyun Moon , Tae Kyoung Kim , Bryan Van Saders
IPC分类号： C09D5/32 , C01G51/04 , C01G37/00 , C01G49/00 , C01G49/08 , C01G51/00 , C01G3/02 , C09C1/24 , C09C3/06 , C09D7/40 , F24S70/20 , B82Y30/00
摘要： Methods, systems, and devices are disclosed for fabricating and implementing optically absorbing coatings. In one aspect, an optically selective coating includes a substrate formed of a solar energy absorbing material, and a nanostructure material formed over the substrate as a coating capable of absorbing solar energy in a selected spectrum and reflecting the solar energy in another selected spectrum. A concentrating solar power (CSP) system includes heat transfer fluids (HTFs); thermal energy storage system (TES); and solar receivers in communication with HTFs and including a light absorbing coating layer based on cobalt oxide nanoparticles.
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公开(公告)号：US20170073530A1
公开(公告)日：2017-03-16
申请号：US15125348
申请日：2015-03-13
发明人： Sungho Jin , Renkun Chen , Zhaowei Liu , Jaeyun Moon , Tae Kyoung Kim , Bryan Van Saders
CPC分类号： C09D5/32 , B82Y30/00 , C01G3/02 , C01G37/00 , C01G49/0063 , C01G49/0072 , C01G49/08 , C01G51/00 , C01G51/04 , C01G51/40 , C01P2002/01 , C01P2002/85 , C01P2002/88 , C01P2004/03 , C01P2004/04 , C01P2004/16 , C01P2004/54 , C01P2004/62 , C01P2004/64 , C01P2004/84 , C01P2006/60 , C09C1/24 , C09C3/063 , C09D7/68 , F24S70/20 , F24S70/25 , Y02E10/40
摘要： Methods, systems, and devices are disclosed for fabricating and implementing optically absorbing coatings. In one aspect, an optically selective coating includes a substrate formed of a solar energy absorbing material, and a nanostructure material formed over the substrate as a coating capable of absorbing solar energy in a selected spectrum and reflecting the solar energy in another selected spectrum. A concentrating solar power (CSP) system includes heat transfer fluids (HTFs); thermal energy storage system (TES); and solar receivers in communication with HTFs and including a light absorbing coating layer based on cobalt oxide nanoparticles.
摘要翻译： 公开了用于制造和实现光学吸收涂层的方法，系统和装置。 一方面，光学选择性涂层包括由太阳能吸收材料形成的基底和形成在基底上的纳米结构材料，作为能够吸收所选光谱中的太阳能并在另一选定光谱中反射太阳能的涂层。 集中太阳能发电（CSP）系统包括传热流体（HTF）; 热能储存系统（TES）; 以及与HTF通信并包括基于氧化钴纳米颗粒的光吸收涂层的太阳能接收器。
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公开(公告)号：US20150107582A1
公开(公告)日：2015-04-23
申请号：US14398722
申请日：2013-05-06
发明人： Sungho Jin , Renkun Chen , Zhaowei Liu , Tae Kyoung Kim
CPC分类号： F24S70/225 , B05D5/06 , B82Y20/00 , F24S10/70 , F24S20/20 , F24S70/20 , F24S70/25 , F24S70/30 , F24S70/60 , G02B1/005 , G02B1/118 , G02B1/14 , G02B5/003 , G02B5/206 , G02B5/207 , G02B5/208 , G02B5/22 , G02B2207/101 , Y02E10/44 , Y10T428/24372 , Y10T428/2438 , Y10T428/24388 , Y10T428/24413 , Y10T428/24421 , Y10T428/24893 , Y10T428/24909
摘要： Techniques, systems, devices and materials are disclosed for spectrally selective coatings for optical surfaces having high solar absorptivity, low infrared emissivity, and strong durability at elevated temperatures. In one aspect, a spectrally selective coating includes a substrate formed of a light absorbing material, and a composite material formed over the substrate and including nanoparticles dispersed in a dielectric material, in which the composite material forms a coating capable of absorbing solar energy in a selected spectrum and reflecting the solar energy in another selected spectrum.
摘要翻译： 公开了用于光学表面的光谱选择性涂层的技术，系统，装置和材料，其具有高的太阳吸收率，低红外发射率和在高温下的强耐久性。 在一个方面，光谱选择性涂层包括由光吸收材料形成的衬底和形成在衬底上并且包括分散在电介质材料中的纳米颗粒的复合材料，其中复合材料形成能够吸收太阳能的涂层 选择的光谱，并将太阳能反映在另一个选定的光谱中。
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