Energy and Exergy Analyses of a Solar-Hydrogen Based Energy System for the Emergency Room of a Hospital in Ankara, Turkey Autho

2018-08-01
Özden, Ender
Tarı, İlker
A hybrid (solar-hydrogen) renewable energy system consisting of photovoltaic (PV) panels, proton exchange membrane (PEM) fuel cells, PEM-based electrolyzers, and hydrogen storage has been investigated for a stand-alone application, which was established for the emergency room of Kecioren Training and Research Hospital in Ankara, Turkey. A complete model of the hybrid renewable energy system has been developed using TRNSYS. The main goal of the study is to meet the electrical power demand of the emergency room without any shortage for a complete year in an emergency blackout condition. The emergency room has a peak electrical load of 5kW and a yearly load of 37.23 MWh. The PV panels are mounted on a tiltable platform to improve the performance of the system. The total area of the PV panels is 300m2, and the PEM fuel cell capacity is 5kW. The hydrogen storage pressure is 55 bars with the capacity of 45m3. Energy and exergy analysis is performed for the hydrogen cycle of the system for a complete year. Overall energy and exergy efficiencies of the hydrogen cycle of the system are calculated as 4.06% and 4.25%, respectively.

Suggestions

Energy-exergy and economic analyses of a hybrid solar-hydrogen renewable energy system in Ankara, Turkey
ÖZDEN, Ender; Tarı, İlker (Elsevier BV, 2016-04-25)
A hybrid (Solar-Hydrogen) stand-alone renewable energy system that consists of photovoltaic panels (PV), Proton Exchange Membrane (PEM) fuel cells, PEM based electrolyzers and hydrogen storage is investigated by developing a complete model of the system using TRNSYS. The PV panels are mounted on a tiltable platform to improve the performance of the system by monthly adjustments of the tilt angle. The total area of the PV panels is 300 m(2), the PEM fuel cell capacity is 5 kW, and the hydrogen storage is at ...
PEM fuel cell degradation: numerical investigation and effects on the performance of solar-hydrogen based renewable energy systems
Özden, Ender; Tarı, İlker; Department of Mechanical Engineering (2015)
A hybrid (Solar-Hydrogen) renewable energy system consisting of Photovoltaic (PV) panels, Proton Exchange Membrane (PEM) fuel cells, PEM based electrolyzers and hydrogen storage has been investigated for a stand-alone application. A complete model of the hybrid renewable energy system has been developed using TRNSYS against a reference system, which was established for the emergency room of Keçiören Research and Training Hospital in Ankara. The main goal of the study is to verify that the system meets the e...
Evaluation of hybridsolar-wind-hydrogenenergy system based on methanol electrolyzer
Budak, Yagmur; DEVRİM, YILSER (Wiley, 2020-10-01)
In this study, it is aimed to meet the annual electricity and heating needs of a house without interruption with the photovoltaic panel, wind turbine, methanol electrolyzer, and high temperature proton exchange membrane fuel cell system. The system results show that the use of the 2 WT with 18 PV was enough to provide the need of the methanol electrolyzer, which provides requirements of the high temperature proton exchange membrane fuel cell. The produced heat by the fuel cell was used to meet the heat requ...
Technical potential of rooftop solar photovoltaic for Ankara
Kutlu, Elif Ceren; Durusoy, Beyza; Ozden, Talat; Akınoğlu, Bülent Gültekin (2022-02-01)
Turkey, which has immense solar potential, has recently shifted towards solar energy and new renewable energy deployment regulations, including implementation and commercializing rooftop PV technologies. Thus, these require a detailed assessment to determine the power source's capability and convince the policymakers. To the authors' best knowledge, there is no available data or a city-based study for the rooftop PV potential in Turkey. Here, we present the first city-based rooftop PV potential study in Ank...
PEM fuel cell degradation effects on the performance of a stand-alone solar energy system
ÖZDEN, Ender; Tarı, İlker (Elsevier BV, 2017-05-04)
After comparing fresh and degraded performances of Polymer Electrolyte Membrane (PEM) based components of a hydrogen cycle with the help of computational fluid dynamics simulations, recently established stand-alone solar energy system producing hydrogen for energy storage is investigated focusing on the effects of degradation of fuel cells on the overall performance of the system. A complete model of the system has been developed using TRNSYS, and a degraded PEM Fuel Cell Subsystem has been incorporated int...
Citation Formats
E. Özden and İ. Tarı, Energy and Exergy Analyses of a Solar-Hydrogen Based Energy System for the Emergency Room of a Hospital in Ankara, Turkey Autho. 2018, p. 794.