Numerical Assessment of Packing Structures for Gas-Particle Trickle Flow Heat Exchanger for Application in CSP Plants

التفاصيل البيبلوغرافية
العنوان: Numerical Assessment of Packing Structures for Gas-Particle Trickle Flow Heat Exchanger for Application in CSP Plants
المؤلفون: Robert Pitz-Paal, Martina Neises-von Puttkamer, Markus Reichart, Reiner Buck
المصدر: ASME 2021 15th International Conference on Energy Sustainability
سنة النشر: 2021
مصطلحات موضوعية: Direct contact heat exchanger, Materials science, Numerical assessment, Packing geometry, Mechanics, Packing structure, Particulates, Particle trickle flow, Trickle flow reactor, CSP, Heat exchanger, Particle, Trickle flow, Particle air heat exchanger
الوصف: The centrifugal particle receiver (CentRec), a direct absorbing receiver operating with ceramic particles, demonstrated at the Julich solar power tower under solar conditions technical large-scale feasibility, generating particle outlet temperatures up to 965 °C. To push particle based CSP technology further towards commercial application the high particle temperatures have to be transferred to a working fluid, like air. A gas-particle trickle flow direct contact heat exchanger (TFHX) has been identified with great potential for high efficiency heat transfer. Inspired by chemical trickle flow reactors and previous work in literature focusing on the gas-particle TFHX concept for temperatures up to 500 °C, the approach and its applicability for high temperature heat exchanger shall be developed further in future. In preparation for subsequent research activities, the present work focuses on the preliminary selection of suitable packing structures for the TFHX. Packing assessment criteria are defined and used to assess the particle behavior within a variety of 44 different packing geometries. The analysis was performed using the open source DEM software LIGGHTS-PUBLIC whereas at this early stage of investigation gas presence was neglected. In the analysis process the packing structures are assessed with the previously defined assessment criteria and reduced to one type of a favorable geometry type. In conclusion, the advantageous characteristics of the identified geometry type are discussed. The presented study gives a methodical selection for packing structures and first starting point for further investigating in the field of the gas-particle TFHX whereas in subsequent work the influence of gas flow to the particle dynamic must be investigated by experimental and simulation work.
اللغة: English
ردمك: 978-0-7918-8488-1
URL الوصول: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7a5e2fc18da0b3542f16f8943be9abab
https://elib.dlr.de/143742/
Rights: OPEN
رقم الانضمام: edsair.doi.dedup.....7a5e2fc18da0b3542f16f8943be9abab
قاعدة البيانات: OpenAIRE