Patents by Inventor Evelyn N. Wang
Evelyn N. 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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Publication number: 20190193512Abstract: An adsorption system can be used as part of a climate control system in a vehicle or in any other space requiring heating or cooling. The adsorbent system can include an enclosure, a plurality of layers arranged in a stack inside the enclosure, and a vapor channel inside the enclosure.Type: ApplicationFiled: December 24, 2018Publication date: June 27, 2019Applicant: MASSACHUSETTS INSTITUTE OF TECHNOLOGYInventors: Evelyn N Wang, Hyunho Kim, Xiansen Li, Shankar Narayanan, Sameer R. Rao, Ari Samuel Umans, Sungwoo Yang
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Publication number: 20190170448Abstract: An adsorption system can be used as part of a climate control system in a vehicle or in any other space requiring heating or cooling.Type: ApplicationFiled: November 26, 2018Publication date: June 6, 2019Applicant: Massachusetts Institute of TechnologyInventors: Young Suk Nam, Ryan Enright, Shalabh Maroo, Evelyn N. Wang, Shankar Narayanan, Ian Salmon McKay
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Publication number: 20190100439Abstract: A silica aerogel having a mean pore size less than 5 nm with a standard deviation of 3 nm. The silica aerogel may have greater than 95% solar-weighted transmittance at a thickness of 8 mm for wavelengths in the range of 250 nm to 2500 nm, and a 400° C. black-body weighted specific extinction coefficient of greater than 8 m2/kg for wavelengths of 1.5 ?m to 15 ?m. Silica aerogel synthesis methods are described. A solar thermal aerogel receiver (STAR) may include an opaque frame defining an opening, an aerogel layer disposed in the opaque frame, with at least a portion of the aerogel layer being proximate the opening, and a heat transfer fluid pipe in thermal contact with and proximate the aerogel layer. A concentrating solar energy system may include a STAR and at least one reflector to direct sunlight to an opening in the STAR.Type: ApplicationFiled: February 24, 2017Publication date: April 4, 2019Inventors: Gang Chen, Evelyn N. Wang, Svetlana Boriskina, Lee A. Weinstein, Sungwoo Yang, Bikramjit S. Bhatia, Lin Zhao, Elise M. Strobach, Thomas A. Cooper, David M. Bierman, Xiaopeng Huang, James Loomis
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Patent number: 10161037Abstract: A uniform external field can enhance condensation on a superhydrophobic surface. Jumping droplets on superhydrophobic surfaces accumulate a positive charge which promises the manipulation and control of jumping behavior using external electric fields.Type: GrantFiled: March 19, 2014Date of Patent: December 25, 2018Assignee: MASSACHUSETTS INSTITUTE OF TECHNOLOGYInventors: Nenad Miljkovic, Daniel John Preston, Ryan Enright, Evelyn N. Wang
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Patent number: 10139169Abstract: An adsorption system can be used as part of a climate control system in a vehicle or in any other space requiring heating or cooling. An adsorbent bed can include a plurality of plates, a layer including an adsorbent material adjacent to a portion of at least one plate; and a plurality of passages between the plates.Type: GrantFiled: October 22, 2012Date of Patent: November 27, 2018Assignee: MASSACHUSETTS INSTITUTE OF TECHNOLOGYInventors: Young Suk Nam, Ryan Enright, Shalabh Maroo, Evelyn N. Wang, Shankar Narayanan, Ian Salmon McKay
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Patent number: 10043932Abstract: A single-stack, solar power receiver comprising both a thermal absorber layer and a photovoltaic cell layer. The stack includes an aerogel layer, that is optically transparent and thermally insulating (“OTTI”); a spectrally selective high thermal conductivity (“SSTC”) thermal absorber layer; a bottom OTTI layer; and a PV cell layer. The SSTC layer includes a set of fins that substantially blocks solar radiation absorption in the band where PV cells are most sensitive. Photons with energies above or below this band block range are absorbed by the fins and the absorbed heat is conducted to pipes in the fin structure carrying a heated thermal working fluid to heat storage. Photons with energy in the band block range are reflected by the SSTC fins to the PV cell layer. The bottom OTTI aerogel layer keeps the PV cell operating near ambient temperature. The PV cell converts incident solar radiation to electrical energy.Type: GrantFiled: August 20, 2014Date of Patent: August 7, 2018Assignee: Massachusetts Institute of TechnologyInventors: Gang Chen, Evelyn N. Wang, Svetlana V. Boriskina, Kenneth McEnaney, Hadi Ghasemi, Selcuk Yerci, Andrej Lenert, Sungwoo Yang, Nenad Miljkovic, Lee A. Weinstein, David Bierman
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Publication number: 20180171604Abstract: A water-harvesting system can operate with a material that can take up and release water with minimum energy requirements and powered by low-grade energy sources, such as sunlight, in order to potentially allow its deployment into households, especially those located in sunny regions. A water-harvesting method and system can include vapor adsorption using a porous metal-organic framework. In certain embodiments, the porous metal-organic framework can include metal-organic framework in ambient air with low relative humidity, typical of the levels found in most dry regions of the world.Type: ApplicationFiled: November 30, 2017Publication date: June 21, 2018Applicant: Massachusetts Institute of TechnologyInventors: Hyunho Kim, Sungwoo Yang, Shankar Narayanan, Ari Samuel Umans, Evelyn N. Wang, Sameer R. Rao
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Patent number: 9929690Abstract: A solar thermal photovoltaic device, and method of forming same, includes a solar absorber and a spectrally selective emitter formed on either side of a thermally conductive substrate. The solar absorber is configured to absorb incident solar radiation. The solar absorber and the spectrally selective emitter are configured with an optimized emitter-to-absorber area ratio. The solar thermal photovoltaic device also includes a photovoltaic cell in thermal communication with the spectrally selective emitter. The spectrally selective emitter is configured to permit high emittance for energies above a bandgap of the photovoltaic cell and configured to permit low emittance for energies below the bandgap.Type: GrantFiled: October 31, 2014Date of Patent: March 27, 2018Assignee: Massachusetts Institute of TechnologyInventors: Andrej Lenert, David Bierman, Walker Chan, Ivan Celanovic, Marin Soljacic, Evelyn N. Wang, Young Suk Nam, Kenneth McEnaney, Daniel Kraemer, Gang Chen
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Patent number: 9914866Abstract: A method of forming a composite material for use in multi-modal transport includes providing three-dimensional graphene having hollow channels, enabling a polymer to wick into the hollow channels of the three-dimensional graphene, curing the polymer to form a cured three-dimensional graphene, adding an active material to the cured three-dimensional graphene to form a composite material, and removing the polymer from within the hollow channels. A composite material formed according to the method is also provided.Type: GrantFiled: November 13, 2014Date of Patent: March 13, 2018Assignee: Massachusetts Institute of TechnologyInventors: Ian Salmon McKay, Sungwoo Yang, Evelyn N. Wang, Hyunho Kim
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Patent number: 9841186Abstract: A tunable boiling system includes a fluid having a solvent and an ionic surfactant in the solvent, a counter electrode disposed within the fluid, and a working electrode having a surface in contact with the fluid. The system is configured to apply a voltage between the surface and the counter electrode in order to affect bubble formation in the fluid at the surface. Methods of making and using the system are also provided.Type: GrantFiled: December 12, 2014Date of Patent: December 12, 2017Assignee: Massachusetts Institute of TechnologyInventors: Han-Jae Jeremy Cho, Evelyn N. Wang
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Patent number: 9835363Abstract: Evaporative heat transfer system. The system includes a substrate and a plurality of substantially parallel, spaced-apart ridges extending from the substrate forming vertical liquid manifolds therebetween. A nanoporous membrane is supported on the ridges and a pump delivers a dielectric fluid across the ridges. The fluid is drawn through the liquid manifolds via capillarity provided by the nanoporous membrane and evaporates to dissipate heat flux through the substrate. A preferred dielectric fluid is pentane. It is preferred that membrane porosity vary across the membrane to tailor thermal resistances to limit temperature rises.Type: GrantFiled: January 10, 2014Date of Patent: December 5, 2017Assignee: Massachusetts Institute of TechnologyInventors: Rong Xiao, Rishi Raj, Shankar Narayanan, Evelyn N. Wang, Ryan Enright, Shalabh Chandra Maroo
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Patent number: 9689631Abstract: Condensation can be an important process in both emerging and traditional power generation and water desalination technologies. Superhydrophobic nanostructures can promise enhanced condensation heat transfer by reducing the characteristic size of departing droplets via a surface-tension-driven mechanism. A superhydrophobic surface can include a heterogeneous surface.Type: GrantFiled: October 21, 2014Date of Patent: June 27, 2017Assignee: MASSACHUSETTS INSTITUTE OF TECHNOLOGYInventors: Rong Xiao, Nenad Milikovic, Evelyn N. Wang, Ryan Enright
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Patent number: 9610580Abstract: Provided in one embodiment is a dynamically tunable structure including an elastic layer, and a plurality of ferromagnetic micropillars disposed over the elastic layer. The elastic layer may have an elasticity that is greater than an elasticity of the micropillars.Type: GrantFiled: June 3, 2014Date of Patent: April 4, 2017Assignee: MASSACHUSETTS INSTITUTE OF TECHNOLOGYInventors: Evelyn N. Wang, Yangying Zhu, Rong Xiao
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Publication number: 20160164451Abstract: A solar thermal photovoltaic device, and method of forming same, includes a solar absorber and a spectrally selective emitter formed on either side of a thermally conductive substrate. The solar absorber is configured to absorb incident solar radiation. The solar absorber and the spectrally selective emitter are configured with an optimized emitter-to-absorber area ratio. The solar thermal photovoltaic device also includes a photovoltaic cell in thermal communication with the spectrally selective emitter. The spectrally selective emitter is configured to permit high emittance for energies above a bandgap of the photovoltaic cell and configured to permit low emittance for energies below the bandgap.Type: ApplicationFiled: October 31, 2014Publication date: June 9, 2016Inventors: Andrej Lenert, David Bierman, Walker Chan, Ivan Celanovic, Marin Soljacic, Evelyn N. Wang, Young Suk Nam, Kenneth McEnaney, Daniel Kraemer, Gang Chen
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Publication number: 20160097606Abstract: Condensation can be an important process in both emerging and traditional power generation and water desalination technologies. Superhydrophobic nanostructures can promise enhanced condensation heat transfer by reducing the characteristic size of departing droplets via a surface-tension-driven mechanism. A superhydrophobic surface can include a heterogeneous surface.Type: ApplicationFiled: October 21, 2014Publication date: April 7, 2016Applicant: MASSACHUSETTS INSTITUTE OF TECHNOLOGYInventors: Rong Xiao, Nenad Milikovic, Evelyn N. Wang, Ryan Enright
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Publication number: 20150345839Abstract: Thermo-adsorptive batteries can provide the heating and cooling functions by taking advantage of the reversible adsorption/desorption cycles involving the pair of the zeolite adsorbent and condensable vapor adsorbate.Type: ApplicationFiled: June 2, 2015Publication date: December 3, 2015Applicant: MASSACHUSETTS INSTITUTE OF TECHNOLOGYInventors: Evelyn N. WANG, Xiansen LI, Ian Salmon MCKAY
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Publication number: 20150167959Abstract: A tunable boiling system includes a fluid having a solvent and an ionic surfactant in the solvent, a counter electrode disposed within the fluid, and a working electrode having a surface in contact with the fluid. The system is configured to apply a voltage between the surface and the counter electrode in order to affect bubble formation in the fluid at the surface. Methods of making and using the system are also provided.Type: ApplicationFiled: December 12, 2014Publication date: June 18, 2015Inventors: Han-Jae Jeremy Cho, Evelyn N. Wang
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Publication number: 20150132565Abstract: A method of forming a composite material for use in multi-modal transport includes providing three-dimensional graphene having hollow channels, enabling a polymer to wick into the hollow channels of the three-dimensional graphene, curing the polymer to form a cured three-dimensional graphene, adding an active material to the cured three-dimensional graphene to form a composite material, and removing the polymer from within the hollow channels. A composite material formed according to the method is also provided.Type: ApplicationFiled: November 13, 2014Publication date: May 14, 2015Inventors: Ian Salmon McKay, Sungwoo Yang, Evelyn N. Wang, Hyunho Kim
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Patent number: 8986814Abstract: Surfaces having a hierarchical structure—having features of both microscale and nanoscale dimensions—can exhibit superhydrophobic properties and advantageous condensation and heat transfer properties. The hierarchical surfaces can be fabricated using biological nanostructures, such as viruses as a self-assembled nanoscale template.Type: GrantFiled: March 4, 2011Date of Patent: March 24, 2015Assignees: Massachusetts Institute of Technology, University of Maryland, College ParkInventors: Evelyn N. Wang, Matthew McCarthy, Ryan Enright, James N. Culver, Konstantinos Gerasopoulos, Reza Ghodssi
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Publication number: 20150053266Abstract: A single-stack, solar power receiver comprising both a thermal absorber layer and a photovoltaic cell layer. The stack includes an aerogel layer, that is optically transparent and thermally insulating (“OTTI”); a spectrally selective high thermal conductivity (“SSTC”) thermal absorber layer; a bottom OTTI layer; and a PV cell layer. The SSTC layer includes a set of fins that substantially blocks solar radiation absorption in the band where PV cells are most sensitive. Photons with energies above or below this band block range are absorbed by the fins and the absorbed heat is conducted to pipes in the fin structure carrying a heated thermal working fluid to heat storage. Photons with energy in the band block range are reflected by the SSTC fins to the PV cell layer. The bottom OTTI aerogel layer keeps the PV cell operating near ambient temperature. The PV cell converts incident solar radiation to electrical energy.Type: ApplicationFiled: August 20, 2014Publication date: February 26, 2015Inventors: Gang Chen, Evelyn N. Wang, Svetlana V. Boriskina, Kenneth McEnaney, Hadi Ghasemi, Selcuk Yerci, Andrej Lenert, Sungwoo Yang, Nenad Miljkovic, Lee A. Weinstein, David Bierman