A cooling aeraulics device is for cooling an element of a rail vehicle. The aeraulics device is designed to be placed on a roof of the rail vehicle and includes a conduit, which extends substantially longitudinally in relation to the rail vehicle. The conduit includes, successively, a front portion equipped with a front opening for the intake of air, a central portion, in which is housed the element to be cooled, and a rear portion, equipped with a rear opening for the discharge of exhaust air. A surface of a transverse cross-section of the conduit evolves, from the front opening to the rear opening, so as to generate an acceleration of the flow of air in the conduit through the Venturi effect.

An air handling system (1) for a land transport vehicle, in particular a railway vehicle (M) is disclosed. The system includes: one or more air handling units (2) distributed within the vehicle (M); a cooling machine (4) that supplies frigories to the air handling units; and a frigories storage unit (8) that is capable of being loaded by the cooling machine and of supplying frigories to the air handling units when the vehicle is travelling in an enclosed or partially enclosed space. When the vehicle (M) is travelling in the open air, the cooling machine (4) supplies frigories to the air handling units (2) and loads the frigories storage unit (8) if a surplus of frigories is produced, by discharging into the exterior of the vehicle (M) the heat extracted from an interior volume of the vehicle.

A renewal method of an air-conditioning unit for vehicle in which an air-conditioning unit using a former refrigerant disposed in a frame mounted on a vehicle is renewed to an air-conditioning unit using an alternative refrigerant, the renewal method including a removal step of: a removing the existing air-conditioning unit from the frame; an assembly step of disposing the new air-conditioning unit, which is configured so as to be capable of fitting in the frame, in the frame; and a filling step of filling the alternative refrigerant into the new air-conditioning unit. The circulating amount of refrigerant in the new air-conditioning unit is increased so as to be larger than that in the previous air-conditioning unit, and the heat exchange capacity per unit volume of each of the indoor heat exchanger and the outdoor heat exchanger is made larger than that before the renewal.

An electronic device includes a heat-receiving block, a heat transfer member, and one or more fins. At least one fin of the one or more fins has at least one ventilation hole to guide air in a direction away from a second main surface of the heat-receiving block. The at least one fin of the one or more fins having the at least one ventilation hole has a first region including a middle of the at least one fin having the at least one ventilation hole in a travel direction or a width direction of a vehicle and second regions located across the first region and having a same area as the first region. A ratio of an opening area of the at least one ventilation hole is higher in the first region than in the second regions.

A railcar chassis for transporting a cargo container is disclosed. The railcar chassis includes a storage portion configured to receive the cargo container having a refrigeration unit. The railcar chassis also includes at least one power unit positioned proximate to the storage portion and configured to provide electrical power to the refrigeration unit.

A vehicle has at least one component which is cooled by a cooling air mass flow delivered from a conveying device such as a fan or a spoiler. A nominal value is predetermined for the cooling air mass flow which, for an assumed maximum thermal loading of the component, cools adequately for operation of the component. A control device controls an intensity of the cooling air mass flow and dimensions it, taking into consideration thermal demands of the component at least in an upper driving speed range, such that a sum of a power consumption of the component, of the conveying device and of a portion of a traction power of the vehicle that is allotted to the delivery of the cooling air mass flow is smaller than a sum of the power consumption of the component, the conveying device and the portion that is allotted to the delivery of the cooling air mass flow at the predetermined nominal value thereof, of a traction power of the vehicle.

In vehicle air-conditioning devices including a refrigerant circuit having a compressor, an outdoor heat exchanger, an expansion device, and an indoor heat exchanger that are connected by refrigerant pipes to form a refrigeration cycle; an indoor air-sending device that supplies air to the indoor heat exchanger; and an outdoor air-sending device that supplies air to the outdoor heat exchanger, the refrigerant circuit is installed under the floor of a vehicle and uses carbon dioxide as the refrigerant.

An object of the present invention is to provide an air conditioner for a rail vehicle that is excellent in cleanliness and comfort by cleaning the air conditioner at an appropriate timing without causing discomfort to passengers. An air conditioner for a rail vehicle including a vehicle control system includes: a refrigeration cycle device 3 that can execute a cleaning operation; and an air conditioning control device 4 that controls the refrigeration cycle device, and the air conditioning control device 4 can communicate with the vehicle control system 2 and causes the refrigeration cycle device 3 to execute a cleaning operation on the basis of status information obtained from the vehicle control system 2.

An environmental control system for conditioning a cabin of a vehicle positioned in an enclosed air-evacuated environment includes a first inlet for receiving a first medium and a second inlet for receiving a second medium. The first medium and the second medium are mixed at a mixing point located upstream from the cabin to form a mixed medium. The environmental control system additionally includes a coolant loop having a coolant circulating therein and at least one heat exchanger. The coolant loop includes a pump for circulating the coolant. The coolant is thermally coupled to the mixed medium at the at least one heat exchanger.

A cooling system is provided for a transportation vehicle arranged to be transported in a low-pressure environ-ment, the system comprising a sublimation circuit for transporting a sublimation fluid, a first heat exchanger arranged to transfer thermal energy to the sublimation fluid, a sublimation unit comprising a fluid inlet and an open channel structure comprising chan-nels which are in fluid communication with the fluid inlet and with an outer surface of the sublimation unit, a first flow controller for controlling a flow of the sublimation fluid through the sublimation circuit, and a container arranged to hold the sublimation fluid and comprising a container outlet connected to the fluid inlet of the sublimation unit to supply sublimation fluid to the sublimation unit.