An assessment of refrigerant heat transfer, pressure drop, and void fraction effects in microfin tubes

HVAC and R Research

Volumn 7, Issue 2, 2001, Pages 125-153

  Newell, T A ^a   Shah, R K ^b  

^a University of Illinois at Urbana Champaign   (United States)

^b Delphi Harrison Thermal Systems   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

CONDENSATION; CONDENSERS (LIQUEFIERS); EVAPORATION; EVAPORATORS; FINS (HEAT EXCHANGE); HEAT FLUX; PRESSURE DROP; REFRIGERANTS; VISCOSITY;

FLUID PROPERTIES; MICROFIN TUBES; VOID FRACTION EFFECTS;

HEAT TRANSFER;

EID: 0035301944     PISSN: 10789669     EISSN: None     Source Type: Journal    
DOI: 10.1080/10789669.2001.10391267     Document Type: Article

References (62)

1. Condensation of new refrigerants inside smooth and enhanced tubes
2. A new computational procedure for heat transfer and pressure drop during refrigerant condensation inside enhanced tubes
3. A dimensionless correlation for heat transfer in forced convection condensation
4. Condensation and evaporation in microfin tubes at equal saturation temperatures
5. Advanced micro-fin tubes for condensation
6. Advanced micro-fin tubes for evaporation
7. General film condensation correlations
8. Heat transfer and pressure drop during evaporation and condensation of refrigerant-22 in 7.5 mm and 10 mm diameter axial and helical grooved tubes
9. Heat transfer and flow characteristics of R22, R32/R125 and R134a in smooth and micro-fin tubes
10. Saturation pool boiling-a simple correlation
11. Condensation in smooth horizontal tubes
12. In-tube condensation of refrigerants in smooth and enhanced tubes
13. NIST thermodynamic properties of refrigerant and refrigerant mixtures, version 4.01
14. An investigation of void fraction in the annular/stratified flow regions in smooth, horizontal tubes
15. Experimental investigation of void fraction during refrigerant condensation
16. Heat transfer and pressure drop during condensation of refrigerant 134a in an axially grooved tube
17. Heat transfer characteristics of internally grooved small size tubes
18. Modeling of the evaporation and condensation of zeotropic refrigerant mixtures in horizontal, annular flow
19. Boiling heat transfer and pressure drop in internal spiral-grooved tubes
20. A model for correlating flow boiling heat transfer in augmented tubes and compact evaporators
21. Predicting flow boiling heat transfer of refrigerants in microfin tubes
22. Flow boiling in horizontal tubes: Part 1-Development of a diabatic two-phase flow pattern map
23. Flow boiling in horizontal tubes: Part 2-New heat transfer data for five refrigerants
24. Flow boiling in horizontal tubes: Part 3-Development of a new heat transfer model based on flow pattern
25. Horizontal convective condensation of alternative refrigerants within a microfin tube
26. Evaporating heat transfer in horizontal internal spiral-grooved tubes in the region of low flow rates
27. Experimental investigation of void fraction during refrigerant condensation in horizontal tubes
28. Condensation heat transfer of binary refrigerant mixtures of R22 and R114 inside a horizontal tube with internal spiral grooves
29. Horizontal flow boiling of R22 and R407C in a 9.52 mm micro-fin tube
30. Condensing and evaporating heat transfer and pressure drop characteristics of HFC-134a and HCFC-22
31. Investigation of the condensing and expansion behaviors of alternative refrigerants
32. A new equivalent reynolds number model for condensation in smooth tubes
33. Flow boiling and pressure drop measurements for R-134a/oil mixtures part 1: Evaporation in a microfin tube
34. Condensation of a refrigerant CFC11 in horizontal microfin tubes (Proposal of a correlation equation for frictional pressure gradient)
35. Condensation of HFC-134a in an 18° helix angle micro-finned tube
36. Measured characteristics of adiabatic and condensing single-component two-phase flow of refrigerant in a 0.377 inch diameter horizontal tube
37. Heat and mass transfer in multicomponent condensation and boiling
38. Heat transfer performance of inner-grooved copper tube
39. Evaporation and condensation of refrigerant-oil mixtures in a smooth tube and a micro-fin tube
40. Evaporation and condensation of refrigerant-oil mixtures in a low-fin tube
41. Performance predictions of refrigerant-oil mixtures in smooth and internally finned tubes-part 1: Literature review
42. Performance predictions of refrigerant-oil mixtures in smooth and internally finned tubes-part II: Design equations
43. Evaporation and condensation heat transfer and pressure drop in horizontal, 12.7-mm microfin tubes with refrigerant 22
44. A comparison of 150 and 300 SUS oil effects on refrigerant evaporation and condensation in a smooth tube and a micro-fin tube
45. A general correlation for heat transfer during film condensation inside pipes
46. The role of surface tension in film condensation in extended surface passages
47. Condensation of nonazeotropic binary refrigerant mixtures including R22 as a more volatile component inside a horizontal tube
48. Flow boiling heat transfer coefficients of R134a in a microfin tube
49. EHD enhancement of in-tube condensation heat transfer of alternate refrigerant R-134a in smooth and microfin tubes
50. Prediction of pressure drop during horizontal two-phase flow of pure and mixed refrigerants
51. Grooved tubes for air conditioners
52. Boiling of new refrigerants: A state-of-the-art review
53. Forced convection condensation inside tubes: A heat transfer equation for condenser design
54. Heat transfer flow regimes of refrigerants in a horizontal tube evaporator
55. Experimental investigation of void fraction during horizontal flow in large diameter refrigeration applications
56. Condensation of R12 in small hydraulic diameter extruded aluminum tubes with and without micro-fins
57. Friction pressure drop of R12 in small hydraulic diameter extruded aluminum tubes with and without micro-fins
58. Experimental investigation of void fraction during horizontal flow in smaller diameter refrigeration applications
59. Flow boiling and pressure drop measurements for R-134a/oil mixtures part 2: Evaporation in a plain tube
60. In-tube flow boiling of R-407C and R-407C/oil mixtures part I: Microfin tube
61. In-tube flow boiling of R-407C and R-407C/oil mixtures part II: Plain tube results and predictions