Realization of Thermal Inertia in Frequency Domain
To realize the lagging behavior in heat conduction observed in these two decades, this paper firstly theoretically excludes the possibility that the underlying thermal inertia is a result of the time delay in heat diffusion. Instead, we verify in experiments the electro-thermal analogy, wherein the...
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MDPI AG
2014-02-01
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Online Access: | http://www.mdpi.com/1099-4300/16/2/1101 |
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author | Boe-Shong Hong Chia-Yu Chou |
author_facet | Boe-Shong Hong Chia-Yu Chou |
author_sort | Boe-Shong Hong |
collection | DOAJ |
description | To realize the lagging behavior in heat conduction observed in these two decades, this paper firstly theoretically excludes the possibility that the underlying thermal inertia is a result of the time delay in heat diffusion. Instead, we verify in experiments the electro-thermal analogy, wherein the thermal inertial is parameterized by thermal inductance that formulates hyperbolic heat-conduction. The thermal hyperbolicity exhibits a special frequency response in Bode plot, wherein the amplitude ratios is kept flat after crossing some certain frequency, as opposed to Fourier heat-conduction. We apply this specialty to design an instrument that reliably identifies thermal inductances of some materials in frequency domain. The instrument is embedded with a DSP-based frequency synthesizer capable of modulating frequencies in utmost high-resolution. Thermal inertia implies a new possibility for energy storage in analogy to inductive energy storage in electricity or mechanics. |
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format | Article |
id | doaj.art-85c243a57d0d4302b6e845dc23c539af |
institution | Directory Open Access Journal |
issn | 1099-4300 |
language | English |
last_indexed | 2024-04-14T05:21:41Z |
publishDate | 2014-02-01 |
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series | Entropy |
spelling | doaj.art-85c243a57d0d4302b6e845dc23c539af2022-12-22T02:10:09ZengMDPI AGEntropy1099-43002014-02-011621101112110.3390/e16021101e16021101Realization of Thermal Inertia in Frequency DomainBoe-Shong Hong0Chia-Yu Chou1Department of Mechanical Engineering, National Chung Cheng University, No. 168, Sec. 1, University Rd., Min-Hsiung, Chia-Yi 62102, TaiwanDepartment of Mechanical Engineering, National Chung Cheng University, No. 168, Sec. 1, University Rd., Min-Hsiung, Chia-Yi 62102, TaiwanTo realize the lagging behavior in heat conduction observed in these two decades, this paper firstly theoretically excludes the possibility that the underlying thermal inertia is a result of the time delay in heat diffusion. Instead, we verify in experiments the electro-thermal analogy, wherein the thermal inertial is parameterized by thermal inductance that formulates hyperbolic heat-conduction. The thermal hyperbolicity exhibits a special frequency response in Bode plot, wherein the amplitude ratios is kept flat after crossing some certain frequency, as opposed to Fourier heat-conduction. We apply this specialty to design an instrument that reliably identifies thermal inductances of some materials in frequency domain. The instrument is embedded with a DSP-based frequency synthesizer capable of modulating frequencies in utmost high-resolution. Thermal inertia implies a new possibility for energy storage in analogy to inductive energy storage in electricity or mechanics.http://www.mdpi.com/1099-4300/16/2/1101thermal inductanceelectro-thermal analogyrenewable energynon-Fourier heat transfer2D classical control |
spellingShingle | Boe-Shong Hong Chia-Yu Chou Realization of Thermal Inertia in Frequency Domain Entropy thermal inductance electro-thermal analogy renewable energy non-Fourier heat transfer 2D classical control |
title | Realization of Thermal Inertia in Frequency Domain |
title_full | Realization of Thermal Inertia in Frequency Domain |
title_fullStr | Realization of Thermal Inertia in Frequency Domain |
title_full_unstemmed | Realization of Thermal Inertia in Frequency Domain |
title_short | Realization of Thermal Inertia in Frequency Domain |
title_sort | realization of thermal inertia in frequency domain |
topic | thermal inductance electro-thermal analogy renewable energy non-Fourier heat transfer 2D classical control |
url | http://www.mdpi.com/1099-4300/16/2/1101 |
work_keys_str_mv | AT boeshonghong realizationofthermalinertiainfrequencydomain AT chiayuchou realizationofthermalinertiainfrequencydomain |