"In a non-tubular heat exchanger, heat is transferred between the fluids by conduction through the plates." . "Qualified" . "NON-TUBULAR HEAT EXCHANGER" . "NON-TUBULAR HEAT EXCHANGER" . "RDS13971120" . "An indirect contact heat exchanger that separates the hot and cold fluids by plates." . "u20683" . "2005.12.15" . .