Abstract: A solid-state heat transporting device including a heat transporting element whose uniformity of contact with one or multiple surfaces is controllable so that various amounts of heat may be transported to and from the one or multiple surfaces. The heat transporting element uses the electrocaloric effect to absorb and release the heat and the uniformity of contact is controlled using an electrostatic effect which may change the shape of the heat transporting element. In one embodiment, the heat transporting element is an electrostatically actuated P(VDF-TrFE-CFE) polymer stack achieving a high specific cooling power of 2.8 W/g and a COP of 13 (the highest reported coefficient of performance to date) when used as a cooling device.
Type:
Application
Filed:
May 7, 2018
Publication date:
March 11, 2021
Applicants:
The Regents of the University of California, SIR International
Inventors:
Qibing Pei, Rujun Ma, Ziyang Zhang, Roy Kornbluh, David Huber
Abstract: Compound of general formula I ##STR1## and its addition salts with a pharmaceutically acceptable acid is described. The compound is prepared by reacting bis-(2-(3,4-dimethoxy-phenyl)ethyl)amine with formaldehyde in a reducing medium. The compound is effective in the treatment of cardiovascular diseases and disturbances in cerebral circulation.
Abstract: The compound I ##STR1## prepared by reacting m-nitrobenzaldehyde, ethyl .beta.-aminocrotonate and 2-piperidinoethanol acetoacetate, is endowed with valuable pharmacological properties namely calcium antagonistic activity in vitro and in vivo.
Type:
Grant
Filed:
February 18, 1988
Date of Patent:
May 2, 1989
Assignees:
Yason s.r.l., Sir International SA, Henning Berlin GmbH