TY JOUR TI Determination of the energy and exergy efficiency coefficients of recuperative heat exchangers KW recuperative heat exchangers KW heat KW exergy KW energy and exergy efficiency coefficients JO From Chemistry Towards Technology Step-By-Step AU Leontiev, V.K. AU Korableva, O.N. AU Leontiev, A.V. PY 2026 IS 7 PB Yaroslavl State Technical University