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

The Society of Air-Conditioning and Refrigerating Engineers of Korea (대한설비공학회)
권호 표지

Study on Pressure Drop and Condensation Heat Transfer Characteristics of R-404A in Brazed Plate Heat Exchanger

R-404A를 사용한 용접형 판형 열교환기의 압력강하 및 응축 열전달특성에 관한 연구

  • Published : 2001.03.01
Download PDF
⟨ Previous Next ⟩

Abstract

Experimental study has been carried out on the characteristics of pressure drop and heat transfer of brazed plate heat exchangers using R-404A. Data are presented for the following range of variables: the mass flux ($20~80kg/m^2s$), chevron angle($20^{circ}C,\;35^{circ}C,\;45^{circ}C$) and inlet pressure of he refrigerant (1.4 and 1.6 MPa). for both subcooled and tow-phase flow, as chevron angle increases, pressure drop and heat transfer coefficient decrease. Condensation hat transfer coefficient and pressure drop was compared with the previously proposed correlations. Among them, Traviss correlation agreed with experimental results within -35~82% for heat transfer coefficient and -73~93% for pressure drop.

Keywords

References

  1. Chemical Engineering Progress v.59 no.7 Heat Transfer Design Method for Plate Heat Exchangers Buonopane,R.A.;Troupe,R.A.;Morgan,J.C.
  2. Chem.Eng.Prog.Symp.Series v.62 no.64 Plate Heat Exchanger Design by ε-NTU Method Jackson,B.W.;Troupe,R.A.
  3. Plate Heat Exchangers and Their Performance, in: Low Reynolds Number Flow Heat Exchangers Raju, K. S. N.;Bansal, J. C.;Kakac, S.;Shah, R. K.;Bergles, A. E.(eds.)
  4. Low Reynolds Number Flow Heat Exchangers Design of Plate Heat Exchangers Raju,K.S.N.;Bansal,J.C.;Kakac,S.(ed.);Shah,R.K.(ed.);Bergles,A.E.(ed.)
  5. The Chemical Engineer v.259 no.1 Recover more Heat with Plate Heat Exchangers Cooper, A.
  6. ASME J. of Heat Transfer v.Ⅲ Multipass Plate Heat Exchangers-Effectiveness NTU Results and Guidelines for Selecting Pass Arrangments Kandlikar, S. G.;Shah, R. K.
  7. Chem.Eng.Thecnol v.12 Flow Phenomena and Local Heat Transfer and Mass Transfer in Corrugated Passages Gaiser,G.;Kottke,V.
  8. KSME v.23 no.7 Study on Pressure Drop Characteristics of Condenser Jeon, C. D.;Jung, J. W.;Lee, J. H.;Kang, S. H.
  9. Chem.Eng.Prog. v.45 no.1 Proposed Correlation of Data for Isothermal Two-Phase, Two-Components Flow in Pi-pes Lockhart,R.W.;Martinelli,R.C.
  10. ASHRAE Trans v.79 Forced-Convection Condensation inside Tube:A Heat Transfer Equation for Condenser Design Traviss,D.P.;Rohseno,W.M.;Baron,A.B.
  11. ASHRAE no.2247 Local Heat Transfer Coefficients during Annular Flow Condensation Azer,N.Z.;Abis,L.V.;Soliman,H.M.
  12. JSME v.60 no.574 Condensation of Refrigerant HCFC-22, HFC-134a and HCFC-123 in a Horizontal Smooth Tube Haraguchi, H.;Koyama, S.;Fujii, T.
  13. Chemical Engineering Progress Symposium series v.55 Condensation Heat Transfer within Horizontal Tubes Akers,W.W.;Deans,H.A.;Crosser,O.K.
  14. Int. J. Heat Mass Transfer v.22 General Correlation for Heat Transfer during Film Condensation Inside Pipes Shah,M.M.