The temperature-dependent dynamics of a negative temperature coefficient (NTC) thermistor conducting variable electric current is modeled using the differential approach. The thermistor is assumed to follow the Steinhart–Hart resistance-temperature equation. The developed mathematical model consists of a nonlinear differential-algebraic equations system, and it was analyzed by the Adomian decomposition method (ADM) and its time-marching version known as the multistage Adomian decomposition method (MADM) as well as the Dormand–Prince (DP) numerical method. Five sets of experiments were conducted on five different NTC thermistors and the laboratory measurements were compared with the model predictions. It is demonstrated that the proposed model, when combined with the MADM, can accurately simulate the thermal behavior of the NTC thermistors. The MADM reproduces the experimental temperature dynamics of the five NTC thermistors with an average absolute relative error of about 2.601% while the corresponding errors for the DP method and the classic ADM are 8.122% and 51.255%, respectively. Also, it is shown that the MADM is highly efficient in terms of computational efficiency and it is approximately 6.5 times faster than the classic DP method, when tuned appropriately.
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Theoretical and Experimental Investigation of Thermal Dynamics of Steinhart–Hart Negative Temperature Coefficient Thermistors
Hooman Fatoorehchi,
Hooman Fatoorehchi
School of Chemical Engineering,
College of Engineering,
University of Tehran,
P.O. Box 11365-4563,
Tehran 1417466191, Iran
e-mail: hfatoorehchi@ut.ac.ir
College of Engineering,
University of Tehran,
P.O. Box 11365-4563,
Tehran 1417466191, Iran
e-mail: hfatoorehchi@ut.ac.ir
1Corresponding author.
Search for other works by this author on:
Mahdi Alidadi,
Mahdi Alidadi
School of Chemical Engineering,
College of Engineering,
University of Tehran,
P.O. Box 11365-4563,
Tehran 1417466191, Iran
e-mail: mahdi_alidadi@ut.ac.ir
College of Engineering,
University of Tehran,
P.O. Box 11365-4563,
Tehran 1417466191, Iran
e-mail: mahdi_alidadi@ut.ac.ir
Search for other works by this author on:
Randolph Rach,
Randolph Rach
The George Adomian Center for
Applied Mathematics,
Hartford, MI 49057-1225
e-mail: tapstrike@gmail.com
Applied Mathematics,
316 South Maple Street
,Hartford, MI 49057-1225
e-mail: tapstrike@gmail.com
Search for other works by this author on:
Abolfazl Shojaeian
Abolfazl Shojaeian
Department of Chemical Engineering,
Hamedan University of Technology,
Hamedan 3733165169, Iran
e-mail: shojaeian@hut.ac.ir
Hamedan University of Technology,
P.O. Box 65155-579
,Hamedan 3733165169, Iran
e-mail: shojaeian@hut.ac.ir
Search for other works by this author on:
Hooman Fatoorehchi
School of Chemical Engineering,
College of Engineering,
University of Tehran,
P.O. Box 11365-4563,
Tehran 1417466191, Iran
e-mail: hfatoorehchi@ut.ac.ir
College of Engineering,
University of Tehran,
P.O. Box 11365-4563,
Tehran 1417466191, Iran
e-mail: hfatoorehchi@ut.ac.ir
Mahdi Alidadi
School of Chemical Engineering,
College of Engineering,
University of Tehran,
P.O. Box 11365-4563,
Tehran 1417466191, Iran
e-mail: mahdi_alidadi@ut.ac.ir
College of Engineering,
University of Tehran,
P.O. Box 11365-4563,
Tehran 1417466191, Iran
e-mail: mahdi_alidadi@ut.ac.ir
Randolph Rach
The George Adomian Center for
Applied Mathematics,
Hartford, MI 49057-1225
e-mail: tapstrike@gmail.com
Applied Mathematics,
316 South Maple Street
,Hartford, MI 49057-1225
e-mail: tapstrike@gmail.com
Abolfazl Shojaeian
Department of Chemical Engineering,
Hamedan University of Technology,
Hamedan 3733165169, Iran
e-mail: shojaeian@hut.ac.ir
Hamedan University of Technology,
P.O. Box 65155-579
,Hamedan 3733165169, Iran
e-mail: shojaeian@hut.ac.ir
1Corresponding author.
Contributed by the Heat Transfer Division of ASME for publication in the JOURNAL OF HEAT TRANSFER. Manuscript received November 21, 2018; final manuscript received April 21, 2019; published online May 20, 2019. Assoc. Editor: Srinath V. Ekkad.
J. Heat Transfer. Jul 2019, 141(7): 072003 (11 pages)
Published Online: May 20, 2019
Article history
Received:
November 21, 2018
Revised:
April 21, 2019
Citation
Fatoorehchi, H., Alidadi, M., Rach, R., and Shojaeian, A. (May 20, 2019). "Theoretical and Experimental Investigation of Thermal Dynamics of Steinhart–Hart Negative Temperature Coefficient Thermistors." ASME. J. Heat Transfer. July 2019; 141(7): 072003. https://doi.org/10.1115/1.4043676
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