A pre-chill system for reducing the temperature of air entering a cooling system includes a wicking material sheet and a series of frame segments. The frame segments are operable to secure the wicking material sheet to an outer casing of the cooling system in a path along which air enters the cooling system, each of the series of frame segments including one or more magnets magnetically attachable to the cooling system. A misting system is capable of directing moisture adjacent an outer face of the wicking material sheet. The frame segments are magnetically attachable to the outer casing of the cooling system over the wicking material sheet so as to retain the wicking material sheet against the outer casing with the wicking material sheet held between the frame segments and the outer casing.

A wind turbine with a tower; a nacelle supported by said tower; at least one unit to be cooled and arranged in the tower or the nacelle; a tower mounted heat exchange structure arranged outside the nacelle and tower; and a circuit facilitating a flow of a fluid medium between the at least one unit and the heat exchange structure. To improve thermal convection with the ambient space, the heat exchange structure comprises a set of panels mutually angled and extending outwards from the tower such that a flow of ambient air can pass transversely trough the panels and thereby cool the unit.

A heat exchange system can include a heat exchange unit and a magnetic element. The heat exchange unit can have a housing and a heat exchange surface configured to thermally couple to a subject of heat exchange. The housing can define an outer surface spaced apart from the heat exchange surface. A magnetic element, a ferrous element, or both, can be positioned within the housing. A coupling agent can have a complementary magnetic element, ferrous element, or both. The coupling agent can interact with the magnetic element, the ferrous element, or both, positioned within the housing. The coupling agent can be coupled to a substrate to retain the heat exchange unit relative to the substrate.

Disclosed is a fan with a magnetic suction support, including at least one fan, a support and a water-cooled row. The fan is arranged with at least one fan magnetic suction structure, and the support is arranged with the same number of support magnetic suction structures matched with the fan magnetic suction structure. By the above technical solution, the fan can be easily opened and closed, a radiator can be easily cleaned, the fan can be easily disassembled and mounted only by tilting the fan when assembling and disassembling, and the fan can be well fixed on the support by the cooperation of the magnetic suction structure and fastener structures when closed, with the advantages of quick and easy assembly and disassembly and simple structure.