Martin, Claudia and Bauer, Thomas and Müller-Steinhagen, Hans (2013) An experimental study of a non-eutectic mixture of KNO3 and NaNO3 with a melting range for thermal energy storage. Applied Thermal Engineering. Elsevier. doi: 10.1016/j.applthermaleng.2013.03.008. ISSN 1359-4311. (In Press)
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Official URL: http://www.sciencedirect.com/science/article/pii/S1359431113001646
Abstract
Thermal energy storage is a key technology for reduced cost solar thermal power generation. This high-temperature application requires storage operation above 100 °C. Possible options are sensible, latent and t hermochemical heat storages. A combination of sensible and latent heat storage seems a promising option for thermal energy storage with an increased specific heat capacity. Salt mixtures with a melting range as opposed to a melting point combine the effects of both latent and sensible heat storage. These provide the possibility of utilising not only latent but in addition sensible heat during the melting and solidification process. The present paper focuses on a binary mixture of 30 wt.-% potassium nitrate (KNO3) and 70 wt.-% sodium nitrate (NaNO3). The measurement systems include a differential scanning calorimeter, a melting point apparatus, a custom-built adiabatic calorimeter and a labscale storage unit. The sample masses ranged from about 20 mg to 156 kg. Tests with the lab-scale storage unit indicate that salt mixtures with a melting range may be successfully utilised in large-scale applications.
Item URL in elib: | https://elib.dlr.de/82032/ | ||||||||||||||||
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Document Type: | Article | ||||||||||||||||
Title: | An experimental study of a non-eutectic mixture of KNO3 and NaNO3 with a melting range for thermal energy storage | ||||||||||||||||
Authors: |
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Date: | 2013 | ||||||||||||||||
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 | ||||||||||||||||
DOI: | 10.1016/j.applthermaleng.2013.03.008 | ||||||||||||||||
Publisher: | Elsevier | ||||||||||||||||
ISSN: | 1359-4311 | ||||||||||||||||
Status: | In Press | ||||||||||||||||
Keywords: | thermal energy storage, melting range, binary salt mixture, sodium nitrate, potassium nitrate | ||||||||||||||||
HGF - Research field: | Energy | ||||||||||||||||
HGF - Program: | Efficient Energy Conversion and Use (old) | ||||||||||||||||
HGF - Program Themes: | Energy-efficient Processes (old) | ||||||||||||||||
DLR - Research area: | Energy | ||||||||||||||||
DLR - Program: | E EV - Energy process technology | ||||||||||||||||
DLR - Research theme (Project): | E - Thermochemische Prozesse (old) | ||||||||||||||||
Location: | Stuttgart | ||||||||||||||||
Institutes and Institutions: | Institute of Engineering Thermodynamics > Thermal Process Technology | ||||||||||||||||
Deposited By: | Martin, Claudia | ||||||||||||||||
Deposited On: | 18 Apr 2013 12:40 | ||||||||||||||||
Last Modified: | 07 Nov 2023 08:18 |
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