Date of download: 12/25/2017 Copyright © ASME. All rights reserved. From: Double Duct Packed Bed Solar Air Heater Under Combined Single and Recyclic Double Air Pass J. Sol. Energy Eng. 2015;138(1):011009-011009-7. doi:10.1115/1.4032142 Figure Legend: Experimental setup schematic diagram of (a) model-I: (1) air blower, (2) flexible pipe, (3) orifice meter, (4) air flow in, (5) glass covers, (6) by pass valve, (7) inclined manometer, (8) insulation, (9) back plate, (10) absorber plate, (11) packed bed, (12) outlet air, (13) solar simulator, and (14) air mixing chamber; (b) model-II: (1) air blower, (2) flexible pipe, (3) orifice meter, (4) air flow in, (5) glass covers, (6) by pass valve, (7) inclined manometer, (8) insulation, (9) back plate (10) absorber plate, (11) packed bed, (12) outlet air, (13) solar simulator, and (14) air mixing chamber

Date of download: 12/25/2017 Copyright © ASME. All rights reserved. From: Double Duct Packed Bed Solar Air Heater Under Combined Single and Recyclic Double Air Pass J. Sol. Energy Eng. 2015;138(1):011009-011009-7. doi:10.1115/1.4032142 Figure Legend: Photographs of experimental setup (a) model-I and (b) model-II

Date of download: 12/25/2017 Copyright © ASME. All rights reserved. From: Double Duct Packed Bed Solar Air Heater Under Combined Single and Recyclic Double Air Pass J. Sol. Energy Eng. 2015;138(1):011009-011009-7. doi:10.1115/1.4032142 Figure Legend: Equipments used in measurements

Date of download: 12/25/2017 Copyright © ASME. All rights reserved. From: Double Duct Packed Bed Solar Air Heater Under Combined Single and Recyclic Double Air Pass J. Sol. Energy Eng. 2015;138(1):011009-011009-7. doi:10.1115/1.4032142 Figure Legend: Effect of recycle ratio on the thermal and thermohydraulic efficiencies of both solar air heater models as a function of mass flow rate

Date of download: 12/25/2017 Copyright © ASME. All rights reserved. From: Double Duct Packed Bed Solar Air Heater Under Combined Single and Recyclic Double Air Pass J. Sol. Energy Eng. 2015;138(1):011009-011009-7. doi:10.1115/1.4032142 Figure Legend: Effect of recycle ratio on the outlet air temperature of both solar air heater models as a function of mass flow rate (a) packed bed duct and (b) duct between glass covers

Date of download: 12/25/2017 Copyright © ASME. All rights reserved. From: Double Duct Packed Bed Solar Air Heater Under Combined Single and Recyclic Double Air Pass J. Sol. Energy Eng. 2015;138(1):011009-011009-7. doi:10.1115/1.4032142 Figure Legend: Effect of recycle ratio on the pressure drop of both solar air heater models as a function of mass flow rate (a) packed bed duct, (b) duct between absorber and back plates, and (c) duct between glass covers

Date of download: 12/25/2017 Copyright © ASME. All rights reserved. From: Double Duct Packed Bed Solar Air Heater Under Combined Single and Recyclic Double Air Pass J. Sol. Energy Eng. 2015;138(1):011009-011009-7. doi:10.1115/1.4032142 Figure Legend: Effect of recycle ratio on the thermal and thermohydraulic efficiencies of (a) model-I and outlet air temperature of (b) packed bed duct (c) glazed duct as a function of mass flow rate, at I = 309 W/m2