Yazar
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A key review of wastewater source heat pump (WWSHP) systems
Hepbasli, A.; Biyik, E.; Ekren, O.; Gunerhan, H.; Araz, M. (PERGAMON-ELSEVIER SCIENCE LTD, 2014)Heat pumps (HPs) are part of the environmentally friendly technologies using renewable energy and have been utilized in the developed countries for years. Wastewater is seen as a renewable heat source for HPs. At the ... -
Design of microcontroller-based decentralized controller board to drive chiller systems using PID and fuzzy logic algorithms
Isler, Y.; Sahin, S.; Ekren, O.; Guzelis, C. (SAGE PUBLICATIONS LTD, 2020)This study deals with designing a decentralized multi-input multi-output controller board based on a low-cost microcontroller, which drives both parts of variable-speed scroll compressor and electronic-type expansion valve ... -
Experimental exergetic performance evaluation of a novel solar assisted LiCl-H2O absorption cooling system
Gunhan, T.; Ekren, O.; Demir, V.; Hepbasli, A.; Erek, A. (ELSEVIER SCIENCE SA, 2014)This study proposes a novel solar assisted absorption cooling (SAAC) system and performs its exergetic analysis and assessment. The system was designed, constructed and tested in Izmir, Turkey. Water was used as refrigerant ... -
Heat exchanger applications in wastewater source heat pumps for buildings: A key review
Culha, O.; Gunerhan, H.; Biyik, E.; Ekren, O.; Hepbasli, A. (ELSEVIER SCIENCE SA, 2015)Wastewater heat recovery applications are becoming widespread in energy saving applications. A sustainable and low emissions operation in air conditioning and heating processes is achieved by harvesting the otherwise wasted ... -
Numerical analysis of a near-room-temperature magnetic cooling system
Ezan, M.A.; Ekren, O.; Metin, C.; Yilanci, A.; Biyik, E. (ELSEVIER SCI LTD, 2017)In this study, for a near-room-temperature magnetic cooling system, a decoupled multiphysics numerical approach (Magnetism, Fluid Flow, and Heat Transfer) is developed using a commercial CFD solver, ANSYS-FLUENT, as a ... -
Performance Assessment of a Near Room Temperature Magnetic Cooling System
Ekren, O.; Yilanci, A.; Ezan, M.A.; Kara, M.; Biyik, E. (ELSEVIER SCIENCE BV, 2017)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 ... -
Performance evaluation of a building integrated photovoltaic (BIPV) system combined with a wastewater source heat pump (WWSHP) system
Araz, M.; Hepbasli, A.; Biyik, E.; Shahrestani, M.; Yao, R.; Oliveira, A.C.; Ekren, O.; Gunerhan, H. (ELSEVIER SCIENCE BV, 2017)This paper deals with both energetic and exergetic performance assessments of two combined systems as a whole. The first one is a Building Integrated Photovoltaic (BIPV) system while the second one is a wastewater (WW) ... -
Radiant Heating-cooling Performance Assessment in a Shopping Center in Sopron, Hungary
Ekren, O.; Hepbasli, A.; Biyik, E. (ELSEVIER SCIENCE BV, 2017)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. ...
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