Cost-optimal dimensioning of combined run-around heat recovery and exhaust air heat pump systems in a Nordic hospital | 2025 Publication type A1 Journal article (refereed), original research Author(s) Liu Jiayi, Ju Yuchen, Yuan Xiaolei, Kosonen Risto, Jokisalo Juha, Meriläinen Altti, Kosonen Antti Energy transition Building and Construction Energy Engineering and Power Technology Renewable Energy, Sustainability and the Environment Energy LUT School of Energy Systems