Abstract: An arrangement for cooling a closed, sealed cabinet (1), comprising a thermosiphon heat exchanger (2) disposed inside the cabinet (1) and having an evaporator (3) and a condenser (4) for circulating a working fluid between the evaporator (3) and the condenser (4) in a closed loop, wherein the working fluid evaporated in the evaporator (3) by heat flows to the condenser (4) for cooling and the condensed working fluid flows back to the evaporator (3). The evaporator (3) is exposed to hot air flow generated inside the cabinet (1), and a heat transfer element (5) is attached to the condenser (3) in a sealed manner through a cabinet wall (6) for transferring heat to the outside of the cabinet (1).

Abstract: An arrangement for cooling a closed, sealed cabinet (1), comprising a thermosiphon heat exchanger (2) disposed inside the cabinet (1) and having an evaporator (3) and a condenser (4) for circulating a working fluid between the evaporator (3) and the condenser (4) in a closed loop, wherein the working fluid evaporated in the evaporator (3) by heat flows to the condenser (4) for cooling and the condensed working fluid flows back to the evaporator (3). The evaporator (3) is exposed to hot air flow generated inside the cabinet (1), and a heat transfer element (5) is attached to the condenser (3) in a sealed manner through a cabinet wall (6) for transferring heat to the outside of the cabinet (1).

Abstract: The disclosure relates to a gas permeable wall for preventing dirt present in a gas flow from passing through the gas permeable wall with the gas flow. In order to minimize maintenance, the gas permeable wall is a circumferential wall of a cover, and an outlet from the cover is provided for passing on gas having entered the cover through the circumferential gas permeable wall. A support is provided for attaching the cover rotatably to a device, and a drive unit is provided for rotating the cover.

Abstract: The present disclosure relates to an apparatus having an evaporator with a base plate having a first surface for receiving a heat load from one or more electric components, tubes that partly penetrate into the base plate via a second surface of the base plate for providing evaporator channels which are embedded into the base plate and condenser channels which are located outside of the base plate. In order to obtain a compact and efficient apparatus, the connecting parts can include hollow sections located within the tubes, each hollow section connecting the channels of a tube to each other in a vicinity of an end of the tube in order to allow fluid to flow between the channels of the tube via the hollow section.

Abstract: A simple and reliable anticipatory failure indicator is provided for fluid circulation piping, and a fluid cooling arrangement including such an indicator is provided. The indicator includes a first sacrificial member, which is designed to be in direct contact with the fluid within the piping and designed to be weaker than the piping. The indicator includes a chamber, which is isolated from the fluid circulation at least partly by means of the first sacrificial member. The indicator includes an electrical response member, which is arranged into the chamber and which is configured to produce an electrical response upon exposure to the fluid, which has entered to the chamber via a failed sacrificial member. Accordingly, the indicator is configured to provide an electrical response as a direct indication of a failed sacrificial member and as an anticipatory indication of failed piping.

Abstract: A simple and reliable anticipatory failure indicator is provided for fluid circulation piping, and a fluid cooling arrangement including such an indicator is provided. The indicator includes a first sacrificial member, which is designed to be in direct contact with the fluid within the piping and designed to be weaker than the piping. The indicator includes a chamber, which is isolated from the fluid circulation at least partly by means of the first sacrificial member. The indicator includes an electrical response member, which is arranged into the chamber and which is configured to produce an electrical response upon exposure to the fluid, which has entered to the chamber via a failed sacrificial member. Accordingly, the indicator is configured to provide an electrical response as a direct indication of a failed sacrificial member and as an anticipatory indication of failed piping.

Abstract: The disclosure relates to a mounting base for an electric component, including, for example, first surface for receiving the electric component, and for receiving a heat load generated by the electric component, and a second surface for dissipating heat from the mounting base. The mounting base can include evaporator channels arranged in the vicinity of the first surface, condenser channels in the vicinity of the second surface and a first and second connecting part for passing fluid between the condenser channels and evaporator channels.

Abstract: The present invention relates to a cooling element of an electronic device, comprising: an inlet opening, and outlet opening, and a flow channel. To achieve efficient cooling with as low costs as possible, the flow channel is designed to cause a pressure difference between the forward end and tail end of the flow channel. At the higher-pressure forward end, an inlet opening is arranged for a secondary cycle. At the lower-pressure tail end of the cooling element flow channel, an outlet opening is arranged for said secondary cycle.

Abstract: The present invention relates to a cooling element of an electronic device, comprising: an inlet opening, and outlet opening, and a flow channel. To achieve efficient cooling with as low costs as possible, the flow channel is designed to cause a pressure difference between the forward end and tail end of the flow channel. At the higher-pressure forward end, an inlet opening is arranged for a secondary cycle. At the lower-pressure tail end of the cooling element flow channel, an outlet opening is arranged for said secondary cycle.

Abstract: The invention relates to a method for cooling an electrolytic capacitor comprising a casing (1) that surrounds a capacitive element (2), and to an electrolytic capacitor. The casing (1) is provided with a hollow (3), and a cooling element (4) made of an electrically insulating material is placed in the hollow (3), the cooling element comprising at least one duct (5), which can be arranged to receive a cooling medium. Since the cooling element placed in the hollow is made of an electrically insulating material, the cooling medium can be liquid, such as water.

Abstract: The invention relates to a method for cooling an electrolytic capacitor comprising a casing (1) that surrounds a capacitive element (2), and to an electrolytic capacitor. The casing (1) is provided with a hollow (3), and a cooling element (4) made of an electrically insulating material is placed in the hollow (3), the cooling element comprising at least one duct (5), which can be arranged to receive a cooling medium. Since the cooling element placed in the hollow is made of an electrically insulating material, the cooling medium can be liquid, such as water.