 Heat exchangers are essential components of many energy systems and their construction plays a key role in ensuring efficient operation. A heat pipe is often used to facilitate heat transfer between two media with the condensed side located above the heated area. Condensers are then used to transfer heat from one medium to another while thermal oil serves as the coolant. This paper examined the effects of various operating conditions on the thermal performance of these devices, finding that increased mass flow and higher temperatures lead to improved efficiency and lower pressure drops. This article was authored by Radovan Nosek, Stanislav Gavlas, Richard Leonard, and others.