Direct contact particle-fluid heat exchanger
| DWPI Title: Heat exchange system for transferring heat from hot particles to fluid supercritical carbon dioxide, has chambers that are located within drum and for extending from first end of drum to opposite second end of drum, and control system is configured to rotate drum relative to caps |
| Abstract: The present disclosure is directed to systems and methods that transfer heat directly from hot particles to a cold fluid, such as sCO2, by bringing the hot particles and cold fluid into direct contact at the operating pressure of the cold fluid. These systems and methods can both stand-off large pressure differentials while allowing particles to pass through and limiting cold fluid leakage either continuously or through a batch process. |
| Use: Heat exchange system for transferring heat from hot particles to fluid such as supercritical carbon dioxide. |
| Advantage: The system improves heat transfer resulting from direct contact between hot particles and a cold fluid. The system does not require a high pressure barrier between counter-flowing fluids. The duct requires enough tensile strength to contain the high pressure in the active region, the region is internally insulated. The particles surrounding the conduits allows the fluid to be preheated before the contact zone of the heat transfer section and to continue to heat the particles in the outlet conduit. |
| Novelty: The system has multiple chambers that are located within the drum and for extending from a first end of the drum to an opposite second end of the drum. The control system is configured to either rotate the drum relative to the caps or to rotate the caps relative to the drum, such that each chamber rotates between a first position and a second position. The chambers are fluidically connect the particle inlet to the particle outlet. The control system moves the chambers into the first position, which causes particles at a first particle temperature to enter the chambers through the particle inlet while particles at a second particle temperature exit the chambers through the particle outlet. The control system introduces the fluid i.e. supercritical carbon dioxide, at a fluid temperature into the chambers in the second position containing the particles at the first particle temperature, thus heating the fluid via direct contact with the particles to a second fluid temperature. |
| Filed: 6/15/2021 |
| Application Number: US17348670A |
| Tech ID: SD 15442.1 |
| This invention was made with Government support under Contract No. DE-NA0003525 awarded by the United States Department of Energy/National Nuclear Security Administration. The Government has certain rights in the invention. |
| Data from Derwent World Patents Index, provided by Clarivate All rights reserved. Republication or redistribution of Clarivate content, including by framing or similar means, is prohibited without the prior written consent of Clarivate. Clarivate and its logo, as well as all other trademarks used herein are trademarks of their respective owners and used under license. |