Portable blockchain mining systems and methods of use are discussed here. Systems include a portable building; a plurality of blockchain mining processors mounted within, or a plurality of blockchain mining processor mounts located within, an interior of the portable building; an air inlet defined in the portable building; and an air outlet defined in the portable building. Air outlets may be above the air inlet and oriented to direct exhaust air in an upward direction out of the portable building. A cooling fan may be connected to convey air through the air inlet, across the plurality of blockchain mining processors and out the air outlet. The cooling fan may simultaneously cool a genset and processors 72. Compact, stackable mining modules are discussed.

Portable blockchain mining systems and methods of use are discussed here. Systems include a portable building; a plurality of blockchain mining processors mounted within, or a plurality of blockchain mining processor mounts located within, an interior of the portable building; an air inlet defined in the portable building; and an air outlet defined in the portable building. Air outlets may be above the air inlet and oriented to direct exhaust air in an upward direction out of the portable building. A cooling fan may be connected to convey air through the air inlet, across the plurality of blockchain mining processors and out the air outlet. The cooling fan may simultaneously cool a genset and processors 72. Compact, stackable mining modules are discussed.

A generator structure includes a lower compartment, an upper compartment, and an intake duct. The lower compartment is configured to support and house at least an alternator and an engine. The upper compartment configured to support and house and at least one cooling device configured to cool the lower compartment. The upper compartment and the lower compartment are vertically arranged. The intake duct is integrated with the lower compartment and includes an upper pathway duct and a lower pathway duct. The upper pathway duct provides a path of air to at least an intake of the engine and the lower pathway ducts provides a path of air to at least cool the alternator.

A system including a cooling fan, an actuator with an actuator temperature sensor, and a controller is disclosed. The controller may be configured to receive temperature data from the actuator temperature sensor. The temperature data may include information relating to an actuator temperature of the actuator. The controller may be configured to compare the actuator temperature with a temperature threshold associated with the actuator, and control the cooling fan to adjust the actuator temperature based on determining that the actuator temperature satisfies the temperature threshold.

A welding power supply having an adjustable cover is disclosed. The welding power supply includes an enclosure housing an engine, a porous radiator thermally coupled to the engine, and a fan configured to propel air through the radiator. A ventilation opening is in fluid communication with the fan and radiator. The fan is configured to move heated air along an air path and out of the ventilation opening. The air may be heated by the welding power supply components (e.g. engine, radiator, charge air cooler, oil cooler, compressor, generator, weld circuitry, and/or other components), for example. The adjustable cover is positioned over the ventilation when in a fully closed and/or partially open/closed position. The adjustable cover may be moved between fully closed, partially open/closed, and fully open positions. The amount of air that is allowed to exit the enclosure, and the amount of air that is recirculated within the enclosure, may be altered by adjusting the position of the adjustable cover.

A speed-sensitized type air duct apparatus includes an air duct having an internal space, an inlet at a front through which cooling air can be introduced, and an outlet at a rear through which the cooling air can be discharged. A guide extends across the internal space of the air duct in a front-rear direction. The guide has a number of air curtains configured to guide flow of the cooling air and having turning portions to change a flow direction of the cooling air, at some sections to decrease a flow rate of cooling air that is discharged to the outlet with the flow direction of the cooling air further changed as a flow speed of cooling air entering the inlet increases.

A distributed cooling system is disclosed. The system may include a first radiator to circulate a liquid coolant through the first radiator to cool the liquid coolant, a first fan, electrically connected to the first radiator, to facilitate cooling the liquid coolant, and a first temperature sensor to obtain first temperature data concerning the liquid coolant. The system may include a second radiator to circulate an oil through the second radiator to cool the oil, a second fan, electrically connected to the second radiator, to facilitate cooling the oil, and a second temperature sensor to obtain second temperature data concerning the oil. The system may include a heat exchanger to cool the liquid coolant and the oil and a controller, electrically connected to the first fan, the first temperature sensor, the second fan, and the second temperature sensor, to control the first fan and the second fan.

A generator structure includes a lower compartment, an upper compartment, and an intake duct. The lower compartment is configured to support and house at least an alternator and an engine. The upper compartment configured to support and house and at least one cooling device configured to cool the lower compartment. The upper compartment and the lower compartment are vertically arranged. The intake duct is integrated with the lower compartment and includes an upper pathway duct and a lower pathway duct. The upper pathway duct provides a path of air to at least an intake of the engine and the lower pathway ducts provides a path of air to at least cool the alternator.

An engine is a rear exhaust engine provided with an exhaust system component on a rear side in a vehicle front-rear direction. This engine includes a first flow rectifying member, provided above the engine, that subjects traveling wind to flow rectification so that the traveling wind flows rearward and a second flow rectifying member, disposed adjacently to a rear side of the first flow rectifying member, that subjects the traveling wind, subjected to flow rectification by the first flow rectifying member, to flow rectification so that the traveling wind is directed to the exhaust system component, in which fuel system components are disposed below the first flow rectifying member.

A vehicle body of a vehicle with a rear engine includes a rear structure that defines a receiving space for the rear engine; an assembly support connected to the rear structure and having at least one recess for passage of air; an air-guiding device mounted on the assembly support and having a retractable and extendable upper part and additionally having a fixed lower part with at least one recess for the passage of air; and a protective grille inserted into the respective recess of the lower part of the air-guiding device. The protective grille is assigned a covering element that is configured to be shiftable relative to the protective grille in order to open up or to close openings defined by the protective grille.