An improved resonant thermal converter based on micro-bridge resonator

• Autorzy: Dong L. , Han J. , Zhang P. , Zhao Z. , Cheng B. , Han D.

Identyfikatory

DOI

10.24425/mms.2018.124882

• Języki publikacji: EN

Abstrakty

EN

This paper presents the design, fabrication and testing of an improved thin-film thermal converter based on an electro-thermally excited and piezo-resistively detected micro-bridge resonator. The resonant thermal converter comprises a bifilar heater and an opposing micro-bridge resonator. When the micro-bridge resonator absorbs the radiant heat from the heater, its axial strain changes, then its resonant frequency follows. Therefore the alternating voltage or current can be transferred to the equivalent DC quantity. A non-contact temperature sensing mechanism eliminates heat loss from thermopiles and reduces coupling capacitance between the temperature sensor and the heater compared with traditional thin-film thermal converters based on thermopiles. In addition, the quasi-digital output of the resonant thin-film thermal converter eliminates such problems as intensity fluctuations associated with analogue signals output by traditional thin-film thermal converters. Using the fast-reversed DC (FRDC) method, the thermoelectric transfer difference, which determines the frequency-independent part of the ac-dc transfer difference, is evaluated to be as low as 1.1 · 10^-6. It indicates that the non-contact temperature sensing mechanism is a feasible method to develop a high-performance thermal converter.

Słowa kluczowe

EN

thermoelectric transfer difference; micro-bridge resonator; thermal converter; bifilar heater

• Wydawca: Komitet Metrologii i Aparatury Naukowej PAN
• Czasopismo: Metrology and Measurement Systems
• Rocznik: 2018
• Tom: Vol. 25, nr 4
• Strony: 715--725
• Opis fizyczny: Bibliogr. 27 poz., rys., wykr., wzory

Twórcy

autor

Dong L.

• China Jiliang University, The College of Mechanical & Electrical Engineering, Hangzhou, 310018, China

autor

Han J.

• China Jiliang University, The College of Mechanical & Electrical Engineering, Hangzhou, 310018, China

autor

Zhang P.

• China Jiliang University, The College of Mechanical & Electrical Engineering, Hangzhou, 310018, China

autor

Zhao Z.

• China Jiliang University, The College of Mechanical & Electrical Engineering, Hangzhou, 310018, China

autor

Cheng B.

• China Jiliang University, The College of Mechanical & Electrical Engineering, Hangzhou, 310018, China

autor

Han D.

• China Jiliang University, The College of Mechanical & Electrical Engineering, Hangzhou, 310018, China

Bibliografia

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Uwagi

EN

1. The authors would like to acknowledge the financial support from the Natural Science Foundation of China (61376114,51377025).

PL

2. Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2018).