Performance of artificially roughened solar air heaters—A review

The conversion, utilization and recovery of energy invariably involve a heat exchange process, which makes it imperative to design more efficient heat exchanger. The use of artificial roughness in different forms, shapes and sizes is the most common and effective way to improve the performance of a solar air heater. Several studies have been carried out to determine the effect of different roughness element geometries on heat transfer and friction in solar air heaters. This study reviews various roughness element geometries employed in solar air heaters for performance enhancement. Based on the correlations of heat transfer and friction factor developed by various investigators, an attempt has been made to compare the thermohydraulic performance of roughened solar air heaters.

[1]  A. Bejan,et al.  Heat transfer handbook , 2003 .

[2]  Sadanari Mochizuki,et al.  Local heat transfer measurements of an orthogonally rotating square duct with angled rib turbulators , 1999 .

[3]  S. C. Solanki,et al.  Heat transfer and friction in solar air heater duct with V-shaped rib roughness on absorber plate , 2002 .

[4]  B. N. Prasad,et al.  Investigation for the optimal thermohydraulic performance of artificially roughened solar air heaters , 2000 .

[5]  K. Gasljevic,et al.  Asymptotes of maximum friction and heat transfer reductions for drag-reducing surfactant solutions , 2001 .

[6]  T. Liou,et al.  Turbulent heat and fluid flow in a passage disturbed by detached perforated ribs of different heights , 1998 .

[7]  J. Nikuradse.  Laws of Flow in Rough Pipes , 1950 .

[8]  Sunil Kumar Singal,et al.  Effective efficiency of solar air heaters having different types of roughness elements on the absorber plate , 2007 .

[9]  S. C. Solanki,et al.  Heat and fluid flow in rectangular solar air heater ducts having transverse rib roughness on absorber plates , 1993 .

[10]  R. Karwa.  EXPERIMENTAL STUDIES OF AUGMENTED HEAT TRANSFER AND FRICTION IN ASYMMETRICALLY HEATED RECTANGULAR DUCTS WITH RIBS ON THE HEATED WALL IN TRANSVERSE, INCLINED, V-CONTINUOUS AND V-DISCRETE PATTERN , 2003 .

[11]  A. Murata,et al.  Effect of centrifugal buoyancy on turbulent heat transfer in an orthogonally rotating square duct with transverse or angled rib turbulators , 2001 .

[12]  M. Chyu,et al.  A Numerical Study of Flow and Heat Transfer in a Smooth and Ribbed U-Duct With and Without Rotation , 2001 .

[13]  M. Faghri,et al.  Heat transfer and pressure drop characteristics in a corrugated duct with rounded corners , 1988 .

[14]  S. C. Solanki,et al.  Heat transfer coefficient and friction factor correlations for the transitional flow regime in rib-roughened rectangular ducts , 1999 .

[15]  S. C. Solanki,et al.  Second law optimization of a solar air heater having chamfered rib–groove roughness on absorber plate , 2007 .

[16]  G. J. Hwang,et al.  An experimental study of laminar heat transfer in a one-porous-wall square duct with suction flow , 1997 .

[17]  Y. Islamoğlu,et al.  Numerical investigation of convective heat transfer and pressure drop in a corrugated heat exchanger channel , 2004 .

[18]  J. Saini,et al.  Experimental investigation on heat-transfer enhancement due to a gap in an inclined continuous rib arrangement in a rectangular duct of solar air heater , 2008 .

[19]  Pongjet Promvonge,et al.  Heat transfer behaviors in a tube with combined conical-ring and twisted-tape insert ☆ , 2007 .

[20]  J. L. Bhagoria,et al.  Augmentation of heat transfer coefficient by using 90° broken transverse ribs on absorber plate of solar air heater , 2005 .

[21]  Ephraim M Sparrow,et al.  Heat transfer and fluid flow characteristics of spanwise-periodic corrugated ducts , 1980 .

[22]  K. Altfeld,et al.  Second law optimization of flat-plate solar air heaters. Part 2: Results of optimization and analysis of sensibility to variations of operating conditions , 1988 .

[23]  J. S. Saini,et al.  Optimal thermohydraulic performance of artificially roughened solar air heaters , 1991 .

[24]  Je-Chin Han,et al.  Influence of Surface Heat Flux Ratio on Heat Transfer Augmentation in Square Channels With Parallel, Crossed and V-Shaped Angled Ribs , 1991 .

[25]  Je-Chin Han,et al.  High performance heat transfer ducts with parallel broken and V-shaped broken ribs , 1992 .

[26]  Thomas English.  On the Surface Condensation of Steam , 1894 .

[27]  M. Taslim,et al.  EXPERIMENTAL HEAT TRANSFER AND FRICTION IN CHANNELS ROUGHENED WITH ANGLED, V-SHAPED AND DISCRETE RIBS ON TWO OPPOSITE WALLS , 1994 .

[28]  Tong-Miin Liou,et al.  Heat Transfer and Fluid Flow in a Square Duct With 12 Different Shaped Vortex Generators , 2000 .

[29]  Ugur Akyol,et al.  Heat transfer and friction correlations and thermal performance analysis for a finned surface , 2001 .

[30]  Tulin Bali,et al.  An experimental study on heat transfer and pressure drop characteristics of decaying swirl flow through a circular pipe with a vortex generator , 2007 .

[31]  Je-Chin Han,et al.  Heat transfer enhancement in channels with turbulence promoters , 1984 .

[32]  M. Taslim,et al.  Darryl E. Metzger Memorial Session Paper: Experimental Heat Transfer and Friction in Channels Roughened With Angled, V-Shaped, and Discrete Ribs on Two Opposite Walls , 1996 .

[33]  R. J. Goldstein,et al.  Heat transfer and friction in tubes with repeated-rib roughness , 1971 .

[34]  S. C. Solanki,et al.  Heat transfer coefficient and friction factor correlations for rectangular solar air heater duct having transverse wedge shaped rib roughness on the absorber plate , 2002 .

[35]  Varun,et al.  Investigation of thermal performance of solar air heater having roughness elements as a combination of inclined and transverse ribs on the absorber plate , 2008 .

[36]  R. Saini,et al.  Heat transfer and friction factor correlations for a duct having dimple-shape artificial roughness for solar air heaters , 2008 .

[37]  D. Dipprey,et al.  An experimental investigation of heat and momentum transfer in smooth and rough tubes at various Prandtl numbers , 1961 .

[38]  Masahiro Kozuka,et al.  Heat transfer characteristics in a two-dimensional channel with an oscillating wall , 2001 .

[39]  S. C. Solanki,et al.  Analysis of heat transfer augmentation and flow characteristics due to rib roughness over absorber plate of a solar air heater , 2006 .

[40]  A. London,et al.  Compact heat exchangers , 1960 .

[41]  S. Mullick,et al.  Heat transfer characteristics of a solar air heater used for drying purposes , 1983 .

[42]  Je-Chin Han,et al.  Heat transfer and friction behaviors in rectangular channels with varying number of ribbed walls , 2003 .

[43]  B. N. Prasad,et al.  Effect of artificial roughness on heat transfer and friction factor in a solar air heater , 1988 .

[44]  Fujii Masao,et al.  Heat transfer and pressure drop of perforated surface heat exchanger with passage enlargement and contraction , 1988 .

[45]  S. C. Solanki,et al.  Thermohydraulic performance of solar air heaters with roughened absorber plates , 1997 .

[46]  Animesh Dutta,et al.  Friction and heat transfer characteristics of laminar swirl flow through a circular tube fitted with regularly spaced twisted-tape elements , 2001 .

[47]  Yeh Rong-Hua.  An analytical study of the optimum dimensions of rectangular fins and cylindrical pin fins , 1997 .

[48]  Je-Chin Han,et al.  Prediction of turbulent heat transfer in rotating smooth square ducts , 1996 .

[49]  L. M. Hossfeld,et al.  Effect of rounding of protruding edges on heat transfer and pressure drop in a duct , 1984 .

[50]  Je-Chin Han,et al.  An investigation of heat transfer and friction for rib-roughened surfaces , 1978 .

[51]  L. Meyer,et al.  Turbulent convective heat transfer from rough surfaces with two-dimensional rectangular ribs , 1977 .

[52]  Varun,et al.  A review on roughness geometry used in solar air heaters , 2007 .

[53]  D. Kenning,et al.  Convective heat transfer to water containing bubbles: Enhancement not dependent on thermocapillarity , 1972 .

[54]  A. Cortés,et al.  Improvement of the efficiency of a bare solar collector by means of turbulence promoters , 1990 .

[55]  G. J. Vanfossen.  Heat transfer coefficients for staggered arrays of short pin fins , 1981 .

[56]  A. F. Mills,et al.  Turbulent flow in a channel with transverse rib heat transfer augmentation , 1993 .

[57]  Je-Chin Han,et al.  Thermal Performance of Angled, V-Shaped, and W-Shaped Rib Turbulators in Rotating Rectangular Cooling Channels (AR=4:1) , 2004 .

[58]  R. Saini,et al.  Development of correlations for Nusselt number and friction factor for solar air heater with roughened duct having arc-shaped wire as artificial roughness , 2008 .

[59]  M. J. Lewis.  Optimising the thermohydraulic performance of rough surfaces , 1975 .

[60]  Constantinos A. Balaras,et al.  A review of augmentation techniques for heat transfer surfaces in single-phase heat exchangers , 1990 .

[61]  R. P. Saini,et al.  Heat transfer and friction factor correlations for artificially roughened ducts with expanded metal mesh as roughness element , 1997 .

[62]  D. F Sherony,et al.  Analytical investigation of heat or mass transfer and friction factors in a corrugated duct heat or mass exchanger , 1970 .

[63]  A. R. Jaurker,et al.  Heat transfer and friction characteristics of rectangular solar air heater duct using rib-grooved artificial roughness , 2006 .

[64]  Bengt Sundén,et al.  Experimental study of flow and heat transfer in rib-roughened rectangular channels , 1998 .

[65]  Jie Han,et al.  Heat transfer and friction characteristics in rectangular channels with rib turbulators , 1988 .

[66]  R. Karwa,et al.  Experimental Study of the Effects of Rib Angle and Discretization on Heat Transfer and Friction in an Asymmetrically Heated Rectangular Duct , 2005 .

[67]  A. N. Tikekar,et al.  Heat transfer and friction factor correlation for artificially roughened duct with metal grit ribs , 2007 .

[68]  Jean-Marie Buchlin,et al.  Convective heat transfer in a channel with perforated ribs , 2002 .

[69]  Hyung Hee Cho,et al.  Experimental study on flow and local heat/mass transfer characteristics inside corrugated duct , 2006 .

[70]  A. Bergles.  ExHFT for fourth generation heat transfer technology , 2002 .

[71]  C. P. Lee,et al.  Augmented Heat Transfer in Square Channels With Parallel, Crossed, and V-Shaped Angled Ribs , 1991 .