O. EkrenA. HepbasliE. BiyikND CaetanoMC FelgueirasMA Forment2025-10-0620171876-610210.1016/j.egypro.2016.12.175http://dx.doi.org/10.1016/j.egypro.2016.12.175https://gcris.yasar.edu.tr/handle/123456789/6955In 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/m(2) 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. (C) 2016 The Authors. Published by Elsevier Ltd.Englishheat pump, radiant heating-cooling, energy efficiency, retrofitting, shopping centerConference Object