• Engineering
  • Published 2001

와이어 코일이 삽입된 나선형 내면가공관의 열전달 및 압력강하 특성

  title={와이어 코일이 삽입된 나선형 내면가공관의 열전달 및 압력강하 특성},
  author={최인수 and 박병덕 and 남상철},
The characteristics of heat transfer and pressure drop through tubes has been investigated experimentally for a compound heat transfer enhancement. The test tubes were spirally indented tubes with wire coil inserts which had a various combinations of pitch and helix angles. Pure water was used as working fluids for the experiments, Heat transfer coefficients and friction factors of the test tubes were evaluated from the values of measured temperatures, flow rates and pressure drops. An… CONTINUE READING