Next Article in Journal
Retraction: Aydin, B. Statistical Convergent Topological Sequence Entropy Maps of the Circle. Entropy 2004, 6, 257–261
Previous Article in Journal
Entropy and Its Correlations with Other Related Quantities
Article Menu

Export Article

Open AccessArticle
Entropy 2014, 16(2), 1101-1121; doi:10.3390/e16021101

Realization of Thermal Inertia in Frequency Domain

Department of Mechanical Engineering, National Chung Cheng University, No. 168, Sec. 1, University Rd., Min-Hsiung, Chia-Yi 62102, Taiwan
Author to whom correspondence should be addressed.
Received: 23 November 2013 / Revised: 24 January 2014 / Accepted: 17 February 2014 / Published: 20 February 2014
View Full-Text   |   Download PDF [1329 KB, uploaded 24 February 2015]   |  


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.
Keywords: thermal inductance; electro-thermal analogy; renewable energy; non-Fourier heat transfer; 2D classical control thermal inductance; electro-thermal analogy; renewable energy; non-Fourier heat transfer; 2D classical control
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

Scifeed alert for new publications

Never miss any articles matching your research from any publisher
  • Get alerts for new papers matching your research
  • Find out the new papers from selected authors
  • Updated daily for 49'000+ journals and 6000+ publishers
  • Define your Scifeed now

SciFeed Share & Cite This Article

MDPI and ACS Style

Hong, B.-S.; Chou, C.-Y. Realization of Thermal Inertia in Frequency Domain. Entropy 2014, 16, 1101-1121.

Show more citation formats Show less citations formats

Related Articles

Article Metrics

Article Access Statistics



[Return to top]
Entropy EISSN 1099-4300 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top