The influence of flow modification on air and PCM temperatures in an accumulative heat exchangerMarcin Borcuch, Michał Musiał, Karol Sztekler, Wojciech Kalawa, Stanisław Gumuła and Sebastian StefańskiEPJ Web Conf., 180 (2018) 02011DOI: https://doi.org/10.1051/epjconf/201818002011