公开(公告)号：US20220307778A1

公开(公告)日：2022-09-29

申请号：US17705693

申请日：2022-03-28

Applicant: Massachusetts Institute of Technology ,  Purdue Research Foundation

Inventor： Evelyn N. Wang ,  Lin Zhao ,  Bikram Bhatia ,  Xiangyu Li ,  Arny Leroy ,  Kyle Wilke ,  Lenan Zhang ,  Jeffrey Youngblood ,  Rodney Trice ,  Chad T. Wilson ,  Olivia Brandt ,  Rodrigo Orta Guerra

IPC: F28F9/02 ,  F28F21/04 ,  F28D9/00

Abstract: Devices and methods for fabrication of a multiscale porous high-temperature heat exchanger for high-temperature and high-pressure applications are disclosed. The heat exchanger can include a core with macrochannels formed in a checkerboard pattern to facilitate alternative flow of working fluid having hot and cold temperatures between adjacent macrochannels. Each macrochannel can include a two-dimensional microchannel array that further distributes flow throughout the heat exchanger to enhance heat transfer and mechanical strength without significant pressure drop penalty. The heat exchanger can further include a header integrated therewith to distribute working fluid flowing through the heat exchanger through the outlets such that it flows evenly therethrough. Methods of fabricating heat exchangers of this nature are also disclosed.

公开(公告)号：US10889501B2

公开(公告)日：2021-01-12

申请号：US16079172

申请日：2017-02-24

Applicant: Massachusetts Institute of Technology

Inventor： 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

IPC: C01B33/158 ,  B01J13/00 ,  F24S80/65 ,  F24S80/56 ,  F24S20/20 ,  C04B14/06 ,  C01B33/14 ,  F24S70/20 ,  F24S10/95 ,  F24S23/70

Abstract: 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 μm to 15 μm. 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.