An air pressure in fuel cells of an electric power generation system comprising a fuel cell stack (PCS) is raised with a pressurized air cooling system with recirculation to values at least two times greater than typical values for an PCS with air cooling. The FCS is either placed in a high-pressure chamber to which air is injected, or air outgoing from the FCS is redirected via a duct back to the FCS inlet and a portion of pressurized fresh air is added thereto. The chamber or the duct is provided with a radiator by means of which circulating air heat is transferred into the external environment. Air recirculation in the chamber or the duct is effected by means of fans for cooling fuel cells. Useful capacity of electric power generation systems based on fuel cells is raised significantly, the necessity of using a humidifier is excluded, and the temperature range of fuel cell operation is expanded.

An electronic device includes a first electrical element, a heat dissipation sheet having a heat diffusion member for diffusing the heat generated from the first electrical element, and an anti-shock member arranged to be stacked with at least a part of the heat diffusion member; and a bracket which provides a space for accommodating the heat dissipation sheet. The heat dissipation sheet includes a first area, a second area, and a third area arranged between the first area and the second area.

An electronic device includes a first housing and a second housing connected to the first housing. An accommodation cavity is formed between the first housing and the second housing. The electronic device further includes a heat generation member arranged in the accommodation cavity and a flow channel arranged in the first housing. The flow channel is configured to accommodate heat exchange liquid and dissipate heat for the heat generation member through the heat exchange liquid.

A ceramic circuit board includes a ceramic base material, a metal layer (first metal layer), and a marker portion. The marker portion is formed on the surface of the first metal layer. The surface of the metal layer (first metal layer) may be plated. When the surface of the metal layer (first metal layer) is plated, the marker portion may be formed on the plating.

The present utility model discloses a modular magnetic-type fan convenient for installation, which comprises a housing, a magnetic-type structure and an electrical-connection structure; the housing is surrounded by a plurality of side frames; the magnetic-type structure comprises a first magnetic part and a second magnetic part arranged on both side frames; the electrical-connection structure comprises a first electrical-connection part and a second electrical-connection part arranged on two side frames; the users can splice fans in accordance with their actual needs make the fan combinations more convenient and avoid messy electrical connection.

An electronic device according to various example embodiments may include a housing including a first housing and a second housing slidably coupled to the first housing within a specific range, a heating part disposed to at least one region of the first housing and second housing, a driving unit disposed to one region in the housing, a flexible display which may include a first portion exposed for view (visible to a user) to the outside of the housing and a second portion extending from the first portion and inserted into the housing or drawn out to the outside when the second housing moves with respect to the first housing, a support structure, at least one temperature sensor, and at least one processor. The at least one processor is configured to sense a temperature and at least control a movement speed of the second housing based on at least the sensed temperature.

A projection device includes a housing, a projection module, a fan, and at least one stopper wall structure. The housing has an air inlet, a first air outlet, and at least one second air outlet. The fan has a wind outlet facing the first air outlet. One part of the projection module is located between the wind outlet and the first air outlet, and one part of a heat dissipating airflow provided by the fan flows from the wind outlet to the first air outlet. The stopper wall structure is connected to the fan, and the stopper wall structure and one part of the housing define at least one air guiding channel. The other part of the projection module is located in the air guiding channel, and the other part of the heat dissipating airflow is guided by the air guiding channel to flow toward the second air outlet.

The invention relates to a module housing made of plastic, in particular a thermosetting polymer, with an embedded cooling element and at least one screw sleeve, which has a collar with an exposed mounting surface with which the module housing can be mounted on a support functioning as an external heat sink. The cooling element and the at least one screw sleeve form a monolithic element with which heat can be conducted from the cooling element to the support via at least the mounting surface.

A fixing device includes a main body, a sliding block, and a fixing rod. The main body has a sliding rail and a guiding hole, and the sliding rail which is disposed at a front side of the main body vertically extends. The guiding hole adjoins the sliding rail and horizontally extends through the main body. The sliding block is slidably connected to the sliding rail. The fixing rod is movably connected to the sliding block extending through the guiding hole, and the sliding block is configured to move along the sliding rail and enable the guiding hole to drive the fixing rod to horizontally move.

A system for cooling computer hardware includes a first heat exchanger and a pump. The first heat exchanger includes a computer hardware contact surface configured to be in thermal contact with the computer hardware on a first side and to be in thermal contact with a cooling liquid on a second side. The first heat exchanger also includes a liquid chamber having a pump interface with at least one chamber inlet and at least one chamber outlet. The pump includes a chamber interface with at least one pump outlet and at least one pump inlet. The pump is configured to: detachably connect at the chamber interface to the pump interface, and drive the cooling liquid from a second heat exchanger to the at least one pump outlet and from the at least one a pump inlet to the second heat exchanger.