TY JOUR TI ABSORPTION REFRIGERATING UNITS IN THE SYSTEMS OF TRIGENERATION KW solar collector KW absorption refrigerating machine KW trigeneration JO Bulletin of Belgorod State Technological University named after. V. G. Shukhov AU Begday, S.N. AU Storozhuk, T.A. PY 2017 IS 2 PB Belgorod State Technological University named after V.G. Shukhov