Heat transfer properties and chaotic analysis of parallel type pulsating heat pipe |
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Authors: | Weixiu Shi Weiyi Li Lisheng Pan and Xifeng Tan |
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Institution: | (1) The Key Lab of Heat Enhanced Transfer and Energy Conservation, Ministry of Education, College of Environment and Energy Engineering, Beijing University of Technology, Beijing, 100124, China;(2) Institute of Engineering Thermophysics, Chinese Academy of Sciences, P. O. Box 2706, Beijing, 100190, China |
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Abstract: | The refrigerant mixture of ethanol aqueous was applied to the parallel type pulsating heat pipe (PHP). The operation characteristics
of the PHP were analyzed by means of experiment and nonlinear chaotic theory. Moreover, the relationship between the running
state and attractor was described. The results indicate that starting power, stable running power and dry burning transition
power are about 64.08 W, 148.68 W and 234.0 W respectively. The cycle and amplitude of PHP initially decrease and then increase
with the increasing power. However, the data are well-distributed in a certain range. The running state is in agreement with
the attractors, and the changing process for attractors is as follows: the attractors first disperse in the whole phase space,
then present mass status, and finally show band distribution. |
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Keywords: | parallel type pulsating heat pipe ethanol aqueous attractor chaotic analysis |
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