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Efficiency potential of indirectly heated solar reforming with open volumetric solar receiver

von Storch, Henrik and Stadler, Hannes and Roeb, Martin and Hoffschmidt, Bernhard (2015) Efficiency potential of indirectly heated solar reforming with open volumetric solar receiver. Applied Thermal Engineering, 87, pp. 297-304. Elsevier. DOI: 10.1016/j.applthermaleng.2015.05.026 ISSN 1359-4311

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Official URL: http://www.sciencedirect.com/science/article/pii/S1359431115004718

Abstract

In solar reforming, the heating value of natural gas is increased by utilization of concentrated solar radiation. Hence, it is a process for storing solar energy in a stable and transportable form that also Permits further conversion into liquid fuels like methanol. The feasibility of solar reforming is proved. However, its overall process efficiency potential has not been studied systematically. In this work, an indirectly heated solar reforming process with air as heat transfer fluid is designed and modelled to produce syngas suitable for subsequent methanol synthesis. For provision of solar high temperature heat, an open volumetric receiver is implemented into the process model and the overall performance is investigated. Results show the paramount significance of the air return ratio of the receiver and its ability to achieve high efficiencies at temperatures above 850 �C. For realistic air return ratios, design point process efficiencies of 19% can be achieved, for an increased air return ratio, values up to 23% are feasible. The determined corresponding annual efficiencies are 12% and 14% respectively. Considering its relative technical simplicity this makes indirectly heated solar reforming a promising technology to overcome the current limitations of solar energy in the medium term.

Item URL in elib:https://elib.dlr.de/99226/
Document Type:Article
Title:Efficiency potential of indirectly heated solar reforming with open volumetric solar receiver
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
von Storch, Henrikhenrik.vonStorch (at) dlr.deUNSPECIFIED
Stadler, Hanneshannes.stadler (at) dlr.deUNSPECIFIED
Roeb, MartinMartin.roeb (at) dlr.deUNSPECIFIED
Hoffschmidt, Bernhardbernhard.hoffschmidt (at) dlr.deUNSPECIFIED
Date:19 May 2015
Journal or Publication Title:Applied Thermal Engineering
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:87
DOI :10.1016/j.applthermaleng.2015.05.026
Page Range:pp. 297-304
Publisher:Elsevier
ISSN:1359-4311
Status:Published
Keywords:Solar reforming Solar fuels CSP Process simulation Volumetric solar receiver
HGF - Research field:Energy
HGF - Program:Renewable Energies
HGF - Program Themes:Concentrating Solar Systems (old)
DLR - Research area:Energy
DLR - Program:E SF - Solar research
DLR - Research theme (Project):E - Solar Process Technology (old)
Location: Jülich , Köln-Porz
Institutes and Institutions:Institute of Solar Research > Solare Verfahrenstechnik
Institute of Solar Research > Punktfokussierende Systeme
Deposited By: Sattler, Prof. Dr. Christian
Deposited On:06 Nov 2015 15:11
Last Modified:06 Sep 2019 15:16

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