The effectiveness of absorption heat pumps application for the increase of economic efficiency of CHP operationDmitriy S. Luzhkovoy, Olga Yu. Romashova, Aleksandr A. Tubolev, Yuriy V. Kobenko and Elena S. RiabovaMATEC Web Conf., 92 (2017) 01054DOI: https://doi.org/10.1051/matecconf/20179201054