Date of download: 7/8/2016 Copyright © ASME. All rights reserved. Modular Design and Experimental Testing of a 50 kW th Pressurized-Air Solar Receiver for Gas Turbines J. Sol. Energy Eng. 2015;137(3): doi: / Schematic of solar receiver. The modular design consists of a cylindrical SiC cavity surrounded by a concentric annular RPC foam contained in a stainless steel pressure vessel, with a secondary concentrator (CPC) attached to its windowless aperture Figure Legend:

Date of download: 7/8/2016 Copyright © ASME. All rights reserved. Modular Design and Experimental Testing of a 50 kW th Pressurized-Air Solar Receiver for Gas Turbines J. Sol. Energy Eng. 2015;137(3): doi: / Experimental setup at the solar tower of the Weizmann Institute of Science Figure Legend:

Date of download: 7/8/2016 Copyright © ASME. All rights reserved. Modular Design and Experimental Testing of a 50 kW th Pressurized-Air Solar Receiver for Gas Turbines J. Sol. Energy Eng. 2015;137(3): doi: / Representative experimental run at 2 bar pressure level. With the air flow rate set to maximum, Q· in was stepwise increased by introducing the heliostats one by one after 11:20. The two air-calorimetry points are at 11:50 and 15:00. The outlet air temperature was increased by reducing m· stepwise. The peak temperature registered was 1090 °C. Figure Legend:

Date of download: 7/8/2016 Copyright © ASME. All rights reserved. Modular Design and Experimental Testing of a 50 kW th Pressurized-Air Solar Receiver for Gas Turbines J. Sol. Energy Eng. 2015;137(3): doi: / Pressure drop across the RPC as a function of the air mass flow rate at various operating pressures for the three RPC configurations: 10 PPI, 20 PPI, and 10 PPI + baffles (BAF) Figure Legend:

Date of download: 7/8/2016 Copyright © ASME. All rights reserved. Modular Design and Experimental Testing of a 50 kW th Pressurized-Air Solar Receiver for Gas Turbines J. Sol. Energy Eng. 2015;137(3): doi: / Pressure coefficient across the RPC versus corrected mass flow rate for the three RPC configurations: 10 PPI, 20 PPI, and 10 PPI + baffles (BAF) Figure Legend:

Date of download: 7/8/2016 Copyright © ASME. All rights reserved. Modular Design and Experimental Testing of a 50 kW th Pressurized-Air Solar Receiver for Gas Turbines J. Sol. Energy Eng. 2015;137(3): doi: / Outlet air temperature as a function of the air mass flow rate. The approximate trend is indicated by an exponential fit. Error bars are within the size of the markers. Figure Legend:

Date of download: 7/8/2016 Copyright © ASME. All rights reserved. Modular Design and Experimental Testing of a 50 kW th Pressurized-Air Solar Receiver for Gas Turbines J. Sol. Energy Eng. 2015;137(3): doi: / Enthalpy change of the air flow versus air mass flow rate for the three RPC configurations: 10 PPI, 20 PPI, and 10 PPI + baffles (BAF). Error bars are within the size of the markers. Figure Legend:

Date of download: 7/8/2016 Copyright © ASME. All rights reserved. Modular Design and Experimental Testing of a 50 kW th Pressurized-Air Solar Receiver for Gas Turbines J. Sol. Energy Eng. 2015;137(3): doi: / Thermal efficiency as a function of the outlet air temperature at various pressures for the three RPC configurations: (a) 10 PPI, (b) 20 PPI, and (c) 10 PPI + baffles Figure Legend:

Date of download: 7/8/2016 Copyright © ASME. All rights reserved. Modular Design and Experimental Testing of a 50 kW th Pressurized-Air Solar Receiver for Gas Turbines J. Sol. Energy Eng. 2015;137(3): doi: / Thermal efficiency as a function of the specific solar radiative energy input for the three RPC configurations: 10 PPI, 20 PPI, and 10 PPI + baffles (BAF) Figure Legend:

Date of download: 7/8/2016 Copyright © ASME. All rights reserved. Modular Design and Experimental Testing of a 50 kW th Pressurized-Air Solar Receiver for Gas Turbines J. Sol. Energy Eng. 2015;137(3): doi: / Ideal solar heat engine efficiency (η th × η Carnot ) as a function of the outlet air temperature at various pressures for the three RPC configurations: (a) 10 PPI, (b) 20 PPI, and (c) 10 PPI + baffles Figure Legend:

Date of download: 7/8/2016 Copyright © ASME. All rights reserved. Modular Design and Experimental Testing of a 50 kW th Pressurized-Air Solar Receiver for Gas Turbines J. Sol. Energy Eng. 2015;137(3): doi: / Ideal solar heat engine efficiency (η th × η Carnot ) as a function of the outlet air temperature. The dashed line shows the theoretical maximum for T amb = 25 °C. Figure Legend: