Double Pass Solar Air Heater with Transvers Fins and without Absorber Plate
The counter flow solar air heaters, with four
transverse fins and wire mesh layers are constructed and investigated
experimentally for thermal efficiency at a geographic location of
Cyprus in the city of Famagusta. The absorber plate is replaced by
sixteen steel wire mesh layers, 0.18 x 0.18cm in cross section
opening and a 0.02cm in diameter. The wire mesh layers arranged in
three groups, first and second include 6 layers, while the third include
4 layers. All layers fixed in the duct parallel to the glazing and each
group separated from the others by wood frame thickness of 0.5cm to
reduce the pressure drop. The transverse fins arranged in a way to
force the air to flow through the bed like eight letter path with flow
depth 3cm. The proposed design has increased the heat transfer rate,
but on other hand causes a high pressure drop. The obtained results
show that, for air mass flow rate range between 0.011-0.036kg/s, the
thermal efficiency increases with increasing the air mass flow. The
maximum efficiency obtained is 65.6% for the mass flow rate of
0.036kg/s. Moreover, the temperature difference between the outlet
flow and the ambient temperature, ΔT, reduces as the air mass flow
rate increase. The maximum difference between the outlet and
ambient temperature obtained was 43°C for double pass for minimum
mass flow rate of 0.011kg/s. Comparison with a conventional solar
air heater collector shows a significantly development in the thermal
efficiency.
[1] Alvarez, A., Cabeza, O., Muniz, M.C., Varela, L.M., Experimental and
numerical investigation of a flat-plate solar collector. Energy 35 (2010)
3707-3716.
[2] Romdhane, ben salma, The air solar collectors comparative study
introduction of baffles to favor the heat transfer. Solar Energy 81 (2007)
139-149.
[3] Adnane Labed, Noureddine Moummi, Adel Benchabane, Kamel Aoues
& Abdelhafid Moummi, Performance investigation of single- and
double-pass solar air heaters through the use of various fin geometries.
International Journal of Sustainable Energy, 30 (2011) 1-12
[4] Esen, H., Ozgen, F., Esen, M., Sengur, A., Modelling of a new solar air
heater through least-squares support vector machines. Expert Systems
Applications 36 (2009) 10673-10682.
[5] Ozgen, F., Esen, M., Esen, H., Experimental investigation of thermal
performance of a double-flow solar air heater having aluminum cans.
Renewable Energy 34 (2009) 2391-2398.6. W.B. Thompson, Kinetic
Theory of Plasma, in M.N. Rosenbluth (ed.), Advanced Plasma Theory,
chap. 1, Academic Press, New York, 1964.
[6] Omojaro AP, Aldabbagh LBY. Experimental performance of single and
double pass solar air heater with fins and steel wire mesh as absorber.
Apply Energy 87 (2010) 3759-3765.
[7] Choudhuri, C., Garg, H.P., Performance of air heating collectors with
packed air flow passage. Solar Energy 50 (1993) 205-221.
[8] C. Choudhury, H.P. Garg, J. Prakash, Design studies of packed- bed
solar air heaters. Energy Conversion and Management 34 (1993) 125-
138.
[9] Fahmy, M.F.M., Labib, A.M., Modeling and analysis of a matrix solar
air heater. Energy Conversion and Management 31 (1991) 121-128.
[10] Sharma, V.K., Rizzi, G., Garg, H.P., Design and development of a
matrix type solar air heater. Energy Conversion and Management 31
(1991) 379-388.
[11] Sodha, M.S., Bansal, N.K., Singh, D., Bhawadwaj, S.S., Performance of
a matrix air heater. Journal of Energy 6 (1982) 334-339.
[12] Sahu MM, Bhagoria JL. Augmentation of heat transfer coefficient by
using 90o broken transverse ribs on absorber plate of solar air heater.
Renewable Energy 30 (2005) 2057-2073.
[13] Youcef-Ali, S., 2005. Study and optimization of the thermal
performances of the offset rectangular plate fin absorber plates, with
various glazing. Renewable Energy 31 (2005) 271-280.
[14] El-Sebaii AA, Aboul-Enein S, Ramadan MRI, El-Bialy E. Year round
performance of double pass solar air heater with packed bed. Energy
Convers Manage 48 (2007) 990-1003.
[15] Yeh HM, Ho CD. Effect of external recycle on the performances of flatplate
solar air heaters with internal fins attached. Renew Energy 34
(2009) 1340-1347.
[16] Ozgen, F., Esen, M., Esen, H., Experimental investigation of thermal
performance of a double-flow solar air heater having aluminum cans.
Renewable Energy 34 (2009) 2391-2398.
[17] A. A. El. Sebaii, S. Aboul- Euein, M. R. I. Ramadan, S. M. Shalaby, B.
M. Moharram, Thermal performance investigation of double passfinned
plate solar air heater. Energy 88 (2011) 1727-1739.
[18] Omojaro AP, Aldabbagh LBY. Experimental performance of single and
double pass solar air heater with fins and steel wire mesh as absorber.
Apply Energy 87 (2010) 3759-3765.
[19] M.F. El-khawajah, L.B.Y. Aldabbagh, F. Egelioglu. The effect of using
transverse fins on a double pass flow solar air heater using wire mesh as
an absorber. Solar Energy 85 (2011) 1479-1487.
[20] S.B. Prasad, J.S. Saini, Krishna M. Singh, Investigation of heat transfer
and friction characteristics of packed bed solar air heater using wire
mesh as packing material. Solar Energy 83 (2009) 773-783.
[21] Bashria A, A. Yousef and Adam N. M, K Sopian, A. Zaharim and M.
Alghoul, Analysis of single and double passes V-grooves solar collector
with and without porous media. International Journal Of Energy And
Environment 1 (2007) Issue 2.
[22] Sopian, K., Supranto, W.R.W., Daud, M.Y., Othman, B.Y., Thermal
performance of the double-pass solar collector with and without porous
media. Renewable Energy 18 (1999) 557-564.
[1] Alvarez, A., Cabeza, O., Muniz, M.C., Varela, L.M., Experimental and
numerical investigation of a flat-plate solar collector. Energy 35 (2010)
3707-3716.
[2] Romdhane, ben salma, The air solar collectors comparative study
introduction of baffles to favor the heat transfer. Solar Energy 81 (2007)
139-149.
[3] Adnane Labed, Noureddine Moummi, Adel Benchabane, Kamel Aoues
& Abdelhafid Moummi, Performance investigation of single- and
double-pass solar air heaters through the use of various fin geometries.
International Journal of Sustainable Energy, 30 (2011) 1-12
[4] Esen, H., Ozgen, F., Esen, M., Sengur, A., Modelling of a new solar air
heater through least-squares support vector machines. Expert Systems
Applications 36 (2009) 10673-10682.
[5] Ozgen, F., Esen, M., Esen, H., Experimental investigation of thermal
performance of a double-flow solar air heater having aluminum cans.
Renewable Energy 34 (2009) 2391-2398.6. W.B. Thompson, Kinetic
Theory of Plasma, in M.N. Rosenbluth (ed.), Advanced Plasma Theory,
chap. 1, Academic Press, New York, 1964.
[6] Omojaro AP, Aldabbagh LBY. Experimental performance of single and
double pass solar air heater with fins and steel wire mesh as absorber.
Apply Energy 87 (2010) 3759-3765.
[7] Choudhuri, C., Garg, H.P., Performance of air heating collectors with
packed air flow passage. Solar Energy 50 (1993) 205-221.
[8] C. Choudhury, H.P. Garg, J. Prakash, Design studies of packed- bed
solar air heaters. Energy Conversion and Management 34 (1993) 125-
138.
[9] Fahmy, M.F.M., Labib, A.M., Modeling and analysis of a matrix solar
air heater. Energy Conversion and Management 31 (1991) 121-128.
[10] Sharma, V.K., Rizzi, G., Garg, H.P., Design and development of a
matrix type solar air heater. Energy Conversion and Management 31
(1991) 379-388.
[11] Sodha, M.S., Bansal, N.K., Singh, D., Bhawadwaj, S.S., Performance of
a matrix air heater. Journal of Energy 6 (1982) 334-339.
[12] Sahu MM, Bhagoria JL. Augmentation of heat transfer coefficient by
using 90o broken transverse ribs on absorber plate of solar air heater.
Renewable Energy 30 (2005) 2057-2073.
[13] Youcef-Ali, S., 2005. Study and optimization of the thermal
performances of the offset rectangular plate fin absorber plates, with
various glazing. Renewable Energy 31 (2005) 271-280.
[14] El-Sebaii AA, Aboul-Enein S, Ramadan MRI, El-Bialy E. Year round
performance of double pass solar air heater with packed bed. Energy
Convers Manage 48 (2007) 990-1003.
[15] Yeh HM, Ho CD. Effect of external recycle on the performances of flatplate
solar air heaters with internal fins attached. Renew Energy 34
(2009) 1340-1347.
[16] Ozgen, F., Esen, M., Esen, H., Experimental investigation of thermal
performance of a double-flow solar air heater having aluminum cans.
Renewable Energy 34 (2009) 2391-2398.
[17] A. A. El. Sebaii, S. Aboul- Euein, M. R. I. Ramadan, S. M. Shalaby, B.
M. Moharram, Thermal performance investigation of double passfinned
plate solar air heater. Energy 88 (2011) 1727-1739.
[18] Omojaro AP, Aldabbagh LBY. Experimental performance of single and
double pass solar air heater with fins and steel wire mesh as absorber.
Apply Energy 87 (2010) 3759-3765.
[19] M.F. El-khawajah, L.B.Y. Aldabbagh, F. Egelioglu. The effect of using
transverse fins on a double pass flow solar air heater using wire mesh as
an absorber. Solar Energy 85 (2011) 1479-1487.
[20] S.B. Prasad, J.S. Saini, Krishna M. Singh, Investigation of heat transfer
and friction characteristics of packed bed solar air heater using wire
mesh as packing material. Solar Energy 83 (2009) 773-783.
[21] Bashria A, A. Yousef and Adam N. M, K Sopian, A. Zaharim and M.
Alghoul, Analysis of single and double passes V-grooves solar collector
with and without porous media. International Journal Of Energy And
Environment 1 (2007) Issue 2.
[22] Sopian, K., Supranto, W.R.W., Daud, M.Y., Othman, B.Y., Thermal
performance of the double-pass solar collector with and without porous
media. Renewable Energy 18 (1999) 557-564.
@article{"International Journal of Mechanical, Industrial and Aerospace Sciences:57314", author = "A. J. Mahmood and L. B. Y. Aldabbagh", title = "Double Pass Solar Air Heater with Transvers Fins and without Absorber Plate", abstract = "The counter flow solar air heaters, with four
transverse fins and wire mesh layers are constructed and investigated
experimentally for thermal efficiency at a geographic location of
Cyprus in the city of Famagusta. The absorber plate is replaced by
sixteen steel wire mesh layers, 0.18 x 0.18cm in cross section
opening and a 0.02cm in diameter. The wire mesh layers arranged in
three groups, first and second include 6 layers, while the third include
4 layers. All layers fixed in the duct parallel to the glazing and each
group separated from the others by wood frame thickness of 0.5cm to
reduce the pressure drop. The transverse fins arranged in a way to
force the air to flow through the bed like eight letter path with flow
depth 3cm. The proposed design has increased the heat transfer rate,
but on other hand causes a high pressure drop. The obtained results
show that, for air mass flow rate range between 0.011-0.036kg/s, the
thermal efficiency increases with increasing the air mass flow. The
maximum efficiency obtained is 65.6% for the mass flow rate of
0.036kg/s. Moreover, the temperature difference between the outlet
flow and the ambient temperature, ΔT, reduces as the air mass flow
rate increase. The maximum difference between the outlet and
ambient temperature obtained was 43°C for double pass for minimum
mass flow rate of 0.011kg/s. Comparison with a conventional solar
air heater collector shows a significantly development in the thermal
efficiency.", keywords = "Counter flow, solar air heater (SAH), Wire mesh, Fins, Thermal efficiency.", volume = "7", number = "6", pages = "1160-6", }
