RT Journal Article SR Electronic A1 Nosek, Radovan A1 Gavlas, Stanislav A1 Lenhard, Richard A1 Sedlak, Veroslav A1 Arvesen, Havard Mollerhagen T1 Condenser Optimization of Heat Pipe JF Communications - Scientific Letters of the University of Zilina YR 2014 VO 16 IS 11 SP 62 OP 66 DO 10.26552/com.C.2014.3A.62-66 UL https://komunikacie.uniza.sk/artkey/csl-201411-0009.php AB Construction of heat exchanger assembly has important role for efficient operation of energy systems. Within this assembly a heat pipe is utilized for heat transfer. The condensation part of the heat pipe is situated on top of the heating zone. The device placed in the heating zone is condenser which is used for efficient heat transfer from one medium to another. The thermal oil is used as cooling medium in the condenser. This paper analyzes the effect of different operation conditions of thermal oil to thermal performance. From the collected results it is obvious that the larger mass flow and higher temperature cause better thermal performance and lower pressure drop.