Investigations on Five PMMA Closed Types of Piezo Actuators as a Cooling Fan

There are five closed types of piezo actuators (closed type of PA, closed PA) as a cooling fan relative to those different PAJs of the previous work (open type of PAJ, open PAJ) for analysis in the present study. Closed PA was composed of circular piezoelectric ceramics (PCs) and acrylic (PMMA) plat...

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Published inPolymers Vol. 15; no. 2; p. 377
Main Authors Wang, Rong-Tsu, Wang, Jung-Chang
Format Journal Article
LanguageEnglish
Published Switzerland MDPI AG 10.01.2023
MDPI
Subjects
acrylic
actuator
Ceramics
Cooling
Energy consumption
Experiments
Free convection
Heat transfer
High temperature fluids
Piezoelectric actuators
piezoelectric ceramic
Piezoelectric ceramics
PMMA
Polymers
Polymethyl methacrylate
Reynolds number
Thermal analysis
Thermal resistance
Velocity
Vortices
piezoelectric ceramic
PA
actuator
PMMA
acrylic
thermal analysis
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Abstract There are five closed types of piezo actuators (closed type of PA, closed PA) as a cooling fan relative to those different PAJs of the previous work (open type of PAJ, open PAJ) for analysis in the present study. Closed PA was composed of circular piezoelectric ceramics (PCs) and acrylic (PMMA) plates and investigated on five different types at operating conditions. The results show that the noise of the closed PA is quieter than that of the open PAJ by about 10 dB. When the closed PA is deposed at a suitable distance of 10 to 20 mm from the heat source, averting sucking back the high-temperature fluids around that, the thermal convection coefficient is above 120% more than that of the conventional rotary fan. The cooling performances of these five closed PAs were evaluated by thermal analysis technique, and the convection thermal resistance of the best closed PA can be decreased by over 15%. In terms of energy consumption, a monolithic closed PA was less than 10% than that of a rotary fan. Among these five closed PAs, the best one has the essential qualities that the diameter of the piezoelectric sheet is 41 mm, the opening length is 4 mm, and the outer opening length is 10 mm. Moreover, the best operating conditions are a voltage frequency of 300 Hz and a release distance of 15 mm in the present study.
AbstractList There are five closed types of piezo actuators (closed type of PA, closed PA) as a cooling fan relative to those different PAJs of the previous work (open type of PAJ, open PAJ) for analysis in the present study. Closed PA was composed of circular piezoelectric ceramics (PCs) and acrylic (PMMA) plates and investigated on five different types at operating conditions. The results show that the noise of the closed PA is quieter than that of the open PAJ by about 10 dB. When the closed PA is deposed at a suitable distance of 10 to 20 mm from the heat source, averting sucking back the high-temperature fluids around that, the thermal convection coefficient is above 120% more than that of the conventional rotary fan. The cooling performances of these five closed PAs were evaluated by thermal analysis technique, and the convection thermal resistance of the best closed PA can be decreased by over 15%. In terms of energy consumption, a monolithic closed PA was less than 10% than that of a rotary fan. Among these five closed PAs, the best one has the essential qualities that the diameter of the piezoelectric sheet is 41 mm, the opening length is 4 mm, and the outer opening length is 10 mm. Moreover, the best operating conditions are a voltage frequency of 300 Hz and a release distance of 15 mm in the present study.
Author Wang, Rong-Tsu
Wang, Jung-Chang
AuthorAffiliation 2 Department of Marine Engineering (DME), National Taiwan Ocean University (NTOU), Keelung 202301, Taiwan
1 Department and Graduate Institute of Information Management, Yu Da University of Science and Technology, Miaoli County 36143, Taiwan
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Keywords piezoelectric ceramic
PA
actuator
PMMA
acrylic
thermal analysis
Language English
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StartPage 377
SubjectTerms acrylic
actuator
Ceramics
Cooling
Energy consumption
Experiments
Free convection
Heat transfer
High temperature fluids
Piezoelectric actuators
piezoelectric ceramic
Piezoelectric ceramics
PMMA
Polymers
Polymethyl methacrylate
Reynolds number
Thermal analysis
Thermal resistance
Velocity
Vortices
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Title Investigations on Five PMMA Closed Types of Piezo Actuators as a Cooling Fan
URI https://www.ncbi.nlm.nih.gov/pubmed/36679257
https://www.proquest.com/docview/2767261038/abstract/
https://search.proquest.com/docview/2768228973
https://pubmed.ncbi.nlm.nih.gov/PMC9866391
https://doaj.org/article/d1e37ad407504ea39ea1c00b0e293d2d
Volume 15
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