설비공학논문집 (Korean Journal of Air-Conditioning and Refrigeration Engineering)

  • 제17권2호
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  • Pages.165-172
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  • 2005
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  • 1229-6422(pISSN)
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  • 2465-7611(eISSN)
대한설비공학회 (The Society of Air-Conditioning and Refrigerating Engineers of Korea)
권호 표지

유동공진이 판형 열교환기의 열전달 향상과 압력강하에 미치는 영향

Effects of Flow Resonance on Heat Transfer Enhancement and Pressure Drop in a Plate Heat Exchanger

  • Han Sang Kyu (Graduate School, Kookmin University) ;
  • Kang Byung Ha (School of Mechanical & Automotive Engineering, Kookmin University)
  • 발행 : 2005.02.01
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초록

Heat transfer enhancement of three types of brazed plate heat exchangers has been evaluated experimentally. The effects of flow resonance in a plate heat exchanger on the heat transfer rate and pressure drop have been investigated in a wide range of mass flow rates in detail. The problem is of particular interest in the innovative design of a plate heat exchanger by flow resonance. The results obtained indicate that both heat transfer coefficient and pressure drop are increased as mass flow rate is increased, as expected. It is also found that the heat transfer enhancement is increased with an increase in the plate pitch, while the heat transfer is decreased with a decrease in the chevron angle. Pressure drop also increased with an increase in the plate pitch and with a decrease in the chevron angle. Heat transfer enhancement in the plate heat exchangers is maximized by flow resonance and the resonance frequency of the present plate heat exchangers is found to be in the range of $10~15\;Hz$.

키워드

참고문헌

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