A Programmable Device for Experiments Employing a Superheated Probe in the Pulsed Operation Mode

Vasil’ev, S. N.; Volosnikov, D. V.; Скрипов, П. В.; Старостин, А. А.; Шишкин, А. В.

doi:10.1023/b:inet.0000038405.46121.0b

Cited by 4 publications

(3 citation statements)

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“…As before, the probe served as a heater and a resistance thermometer. The initially developed technique was the technique of controlled weight-average probe temperature for studying the intensive bubble boiling heat transfer and chemical reactions on the wire heater surface [5], and also the thermophysical properties of liquids pulse-heated to a prescribed temperature [6][7][8].…”

Section: Choosing the Approachmentioning

confidence: 99%

“…For this reason, the locking circuit is manually initiated by pushing the button. Initiation of locking system (4) starts recording for ADC (8) and for control pulse generator (1). Generator (1) generates a single rectangular voltage pulse with chosen amplitude and duration (hereinafter, input pulse), which opens power element (12).…”

Section: Operation Of the Apparatusmentioning

confidence: 99%

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Apparatus for studying heat transfer in nanofluids under high-power heating

Rutin

Скрипов

2012

J. Engin. Thermophys.

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A technique of electronic control of the probe heating power is developed using the method of controlled pulse heating of a wire probe, that is a resistance thermometer, was developed. An apparatus implementing this technique was fabricated. The characteristic parameters of the apparatus are as follows: the heating pulse length, 1 to 10 ms; the heat flux density through the surface of a 20 μm probe, 1 to 10 MW/m 2 ; repeatability of selected power value in a series of pulses is on a level of 0.05%. As an example, the constant heating power mode is applied for comparing the thermal resistance of nanofluids in the region of stable states of liquid and superheated (with respect to the liquid-vapor equilibrium temperature of the base liquid) ones. The parameter was the content of Al 2 O 3 nanoparticles in the base liquid (isopropanol).

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Section: Choosing the Approachmentioning

confidence: 99%

Section: Operation Of the Apparatusmentioning

confidence: 99%

Apparatus for studying heat transfer in nanofluids under high-power heating

Rutin

Скрипов

2012

J. Engin. Thermophys.

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“…The sampling of values is performed at a frequency defined by a programmable timer PT. The HFG is loaded by the results of preliminary experiments with fitting of the desired heating function [15].…”

Section: Composition and Operation Of The Experimental Setupmentioning

confidence: 99%

An experimental investigation of heat transfer in thermally unstable polymer systems

et al. 2006

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An experimental study is made into the process of heat transfer from a pulse-superheated probe to a solidified polymer system at probe temperatures above the temperature T d∞ of the beginning of thermal destruction of matter in a quasi-static process. Use is made of the procedures of thermal stabilization of the pulse-superheated probe (with the characteristic time of constancy of superheated probe temperature of 1 ms) and of shock heating (with the characteristic time of increasing the probe temperature of 1 μs and that of monitoring its cooling-down of 1 ms). The effect of short-term thermal stability of polymers in the region of T > T d∞ is revealed. A procedure is developed for identifying the signs of thermal destruction of polymers in the pulsed process. The maximal values are estimated of the density of heat flux through samples without their thermal destruction.

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