Spectrally Controlled Thermal Radiation Based on Surface Microstructures for High-Efficiency Solar Thermophotovoltaic system

Asaka Kohiyama; Makoto Shimizu; Hiroaki Kobayashi; Fumitada Iguchi; Hiroo Yugami

doi:10.1016/j.egypro.2014.10.205

Spectrally Controlled Thermal Radiation Based on Surface Microstructures for High-Efficiency Solar Thermophotovoltaic system

Asaka Kohiyama, Makoto Shimizu, Hiroaki Kobayashi, Fumitada Iguchi, Hiroo Yugami

Research output: Contribution to journal › Conference article › peer-review

13 Citations (Scopus)

Abstract

Thermophotovoltaic (TPV) system is expected to generate electrical power from various heat sources. One of the key devices of TPV system is spectrally control thermal emitters. The performance is not sufficient to achieve high efficient TPV systems. In this study, we developed new type spectral selective emitters with closed-end surface microcavity array. The simulated spectral thermal radiation band width is only 70nm and Q-value=26.4. This Q-value is 5 times larger than the conventional open-end microcavity emitters. The design of Solar-TPV system which is driven by concentrated solar energy using refractory metal emitters with multilayer coating. The estimated system efficiency and electric power density using the experimentally obtained spectral property of the selective emitters is 16.6% and 2.9W/cm2, respectively.

Original language	English
Pages (from-to)	517-523
Number of pages	7
Journal	Energy Procedia
Volume	57
DOIs	https://doi.org/10.1016/j.egypro.2014.10.205
Publication status	Published - 2014
Event	2013 ISES Solar World Congress, SWC 2013 - Cancun, Mexico Duration: 2013 Nov 3 → 2013 Nov 7

Keywords

Microcavity effect
STPV
Spectrally selective emitter

ASJC Scopus subject areas

Energy(all)

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10.1016/j.egypro.2014.10.205

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title = "Spectrally Controlled Thermal Radiation Based on Surface Microstructures for High-Efficiency Solar Thermophotovoltaic system",

abstract = "Thermophotovoltaic (TPV) system is expected to generate electrical power from various heat sources. One of the key devices of TPV system is spectrally control thermal emitters. The performance is not sufficient to achieve high efficient TPV systems. In this study, we developed new type spectral selective emitters with closed-end surface microcavity array. The simulated spectral thermal radiation band width is only 70nm and Q-value=26.4. This Q-value is 5 times larger than the conventional open-end microcavity emitters. The design of Solar-TPV system which is driven by concentrated solar energy using refractory metal emitters with multilayer coating. The estimated system efficiency and electric power density using the experimentally obtained spectral property of the selective emitters is 16.6% and 2.9W/cm2, respectively.",

keywords = "Microcavity effect, STPV, Spectrally selective emitter",

author = "Asaka Kohiyama and Makoto Shimizu and Hiroaki Kobayashi and Fumitada Iguchi and Hiroo Yugami",

note = "Funding Information: A part of this study is supported by JST, ALCA (Advanced Low Carbon Technology Research and Development Program). Publisher Copyright: {\textcopyright} 2014 The Authors Published by Elsevier Ltd.; 2013 ISES Solar World Congress, SWC 2013 ; Conference date: 03-11-2013 Through 07-11-2013",

year = "2014",

doi = "10.1016/j.egypro.2014.10.205",

language = "English",

volume = "57",

pages = "517--523",

journal = "Energy Procedia",

issn = "1876-6102",

publisher = "Elsevier BV",

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TY - JOUR

T1 - Spectrally Controlled Thermal Radiation Based on Surface Microstructures for High-Efficiency Solar Thermophotovoltaic system

AU - Kohiyama, Asaka

AU - Shimizu, Makoto

AU - Kobayashi, Hiroaki

AU - Iguchi, Fumitada

AU - Yugami, Hiroo

N1 - Funding Information: A part of this study is supported by JST, ALCA (Advanced Low Carbon Technology Research and Development Program). Publisher Copyright: © 2014 The Authors Published by Elsevier Ltd.

PY - 2014

Y1 - 2014

N2 - Thermophotovoltaic (TPV) system is expected to generate electrical power from various heat sources. One of the key devices of TPV system is spectrally control thermal emitters. The performance is not sufficient to achieve high efficient TPV systems. In this study, we developed new type spectral selective emitters with closed-end surface microcavity array. The simulated spectral thermal radiation band width is only 70nm and Q-value=26.4. This Q-value is 5 times larger than the conventional open-end microcavity emitters. The design of Solar-TPV system which is driven by concentrated solar energy using refractory metal emitters with multilayer coating. The estimated system efficiency and electric power density using the experimentally obtained spectral property of the selective emitters is 16.6% and 2.9W/cm2, respectively.

AB - Thermophotovoltaic (TPV) system is expected to generate electrical power from various heat sources. One of the key devices of TPV system is spectrally control thermal emitters. The performance is not sufficient to achieve high efficient TPV systems. In this study, we developed new type spectral selective emitters with closed-end surface microcavity array. The simulated spectral thermal radiation band width is only 70nm and Q-value=26.4. This Q-value is 5 times larger than the conventional open-end microcavity emitters. The design of Solar-TPV system which is driven by concentrated solar energy using refractory metal emitters with multilayer coating. The estimated system efficiency and electric power density using the experimentally obtained spectral property of the selective emitters is 16.6% and 2.9W/cm2, respectively.

KW - Microcavity effect

KW - STPV

KW - Spectrally selective emitter

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U2 - 10.1016/j.egypro.2014.10.205

DO - 10.1016/j.egypro.2014.10.205

M3 - Conference article

AN - SCOPUS:84922329875

SN - 1876-6102

VL - 57

SP - 517

EP - 523

JO - Energy Procedia

JF - Energy Procedia

T2 - 2013 ISES Solar World Congress, SWC 2013

Y2 - 3 November 2013 through 7 November 2013

ER -

Spectrally Controlled Thermal Radiation Based on Surface Microstructures for High-Efficiency Solar Thermophotovoltaic system

Abstract

Keywords

ASJC Scopus subject areas

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