Browsing by Author "Biyik, E."

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Citation - WoS: 58
Citation - Scopus: 63
A method of strategic evaluation of energy performance of Building Integrated Photovoltaic in the urban context
(ELSEVIER SCI LTD, 2018) V. Costanzo; R. Yao; E. Essah; L. Shao; M. Shahrestani; A. C. Oliveira; M. Araz; A. Hepbasli; E. Biyik; Essah, E.; Shahrestani, M.; Yao, R.; Biyik, E.; Shao, L.; Costanzo, V.; Oliveira, A. C.
This paper presents an integrated bottom-up approach aimed at helping those dealing with strategical analysis of installation of Building Integrated Photo Voltaic (BIPV) to estimate the electricity production potential along with the energy needs of urban buildings at the district scale. On the demand side hourly energy profiles are generated using dynamic building simulation taking into account actual urban morphologies. On the supply side electricity generated from the system is predicted considering both the direct and indirect components of solar radiation as well as local climate variables. Python-based Algorithm editor Grasshopper is used to interlink four types of modelling and simulation tools as 1) generation of 3-D model 2) solar radiation analysis 3) formatting weather files (TMY data set) and 4) dynamic energy demand. The method has been demonstrated for a cluster of 20 buildings located in the Yasar University in Izmir (Turkey) for which it is found the BIPV system could achieve an annual renewable share of 23% in line with the Renewable Energy Directive target of 20%. Quantitatively compared demand and supply information at hourly time step shows that only some energy needs can be met by BIPV so there is a need for an appropriate matching strategy to better exploit the renewable energy potential. (C) 2018 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY license.
Citation - WoS: 3
Citation - Scopus: 3
Performance Assessment of a Near Room Temperature Magnetic Cooling System
(Elsevier Ltd, 2017) Orhan Ekren; Ahmet Yilanci; Mehmet Akif Ezan; Murat Kara; Emrah Biyik; Ekren, O.; Kara, M.; Yilanci, A.; Ezan, M.A.; Biyik, E.; N.S. Caetano , N.S. Caetano , M.C. Felgueiras , M.A. Forment
In this study performance of a near room temperature magnetic cooling system was investigated experimentally in terms of temperature span. The current setup has a permanent magnet pairs (0.7 Tesla) a magnetocaloric material (Gadolinium) and a heat transfer fluid (water ethylene glycol and 10% ethanol-water mixing) furthermore solar energy was used as a power source of liner motion of the magnetic system. The obtained results showed that ethanol-water was the best heat transfer fluid and also that optimum magnetization-demagnetization period for the system was found 10 s. © 2017 Elsevier B.V. All rights reserved.
Citation - WoS: 1
Citation - Scopus: 1
Radiant Heating-cooling Performance Assessment in a Shopping Center in Sopron Hungary
(Elsevier Ltd, 2017) Orhan Ekren; A. Hepbasli; Emrah Biyik; Hepbasli, A.; Ekren, O.; Biyik, E.; N.S. Caetano , N.S. Caetano , M.C. Felgueiras , M.A. Forment
In this study performance of a radiant heating-cooling via air source heat pump was investigated. This study is part of a project funded by European Union's FP7 for research technological development and demonstration. In the project it is aimed that a holistic retrofitting solution for commercial buildings to reduce primary energy consumption down to less than 80 kWh/m2 per year. A shopping center called IKVA located in Sopron Hungary used as a demo building. In that building a heat pump system integrated with a radiant heating and cooling system is used. In this paper two different cases are compared regarding air source heat pump system, in Case-1 air source of the heat pump is outdoor air in Case-2 air source of heat pump is return air. © 2017 Elsevier B.V. All rights reserved.