The present disclosure relates to a method for pretreating an evaporator for accelerating odor reproduction of an odor reproduction device for a vehicle air conditioning system, and a method for pretreating an evaporator surface of the present disclosure may include: a step of preparing an inoculation of malodorous microorganisms; a step of preparing and pretreating an evaporator; and a step of immobilizing malodorous microorganisms on an evaporator surface.

A heating, ventilation, and air conditioning (HVAC) system may comprise an evaporator core including an upstream inlet face in which humid air is received, a downstream outlet face from which dehumidified air is discharged, and a plurality of air-contacting surfaces extending between the inlet and outlet faces. In one form, an antimicrobial coating may be formed on the air-contacting surfaces of the evaporator core. The antimicrobial coating may comprise an ionic material having immobilized ionic groups of one type of charge and mobile counterions of another type of charge. The mobile counterions may be ionically associated with the immobilized ionic groups. In another form, an ultraviolet light emitting diode (UV-LED) may be used to direct UV light onto the air-contacting surfaces of the evaporator core.

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 automatic car air freshener system is disclosed that is configured to integrate into existing ducting of a vehicle and selectively disperse a measured amount of scent matter into the ducts for dispersion into the cabin of the vehicle. The system includes a storage unit containing a volume of scented matter, a release mechanism in communication with the storage unit, and a control unit in communication with the release mechanism and configured to regulate the dispersion of the scented matter from the storage unit in accordance with the desires of a user. The control unit is an interface for the passenger to regulate scent dispersion. A sensor is also optionally included to monitor air quality from the ambient air.

In the application, since the flow of air outside the vehicle compartment flowing through the upstream heat exchange part and the flow of air outside the vehicle compartment flowing through the downstream heat exchange part are opposite flows, a second heat exchanger through which the air outside the vehicle compartment flowing from the first fan through the downstream heat exchange part flows, a first heat exchanger is an orthogonal heat exchanger, the second heat exchanger that is a component of a refrigeration cycle execution system, the air in the vehicle compartment, which flows in from the inside air inlet by the rotation of the second fan and is discharged from the outlet outside the vehicle through the first heat exchanger, and the air outside the vehicle compartment, are exchanged with the first heat exchanger, it can be miniaturized along with the improvement of electricity cost.

A heat exchanger having a polyamine on at least part of a surface of the heat exchanger. The existence of polyamine on the surface of the heat exchanger allows the odor components to be temporality held by virtue of the action of polyamine, and the odor components are not released into an interior room or the like at once in conjunction with the evaporation of free water (such as condensed water). Thus, the release of odor components is made moderate, and changes in the concentration of odor components in the interior room are reduced, so that strong odors sensed by people are suppressed. A typical example of the polyamine is PEI, and a typical example of the heat exchanger is an evaporator used in a car air-conditioner.

A vehicle air-conditioning apparatus includes: an indoor heat exchanger that evaporates a refrigerant; a cooperative device group that forms, with the indoor heat exchanger, a refrigeration cycle; a waste heat recovery part that recovers waste heat from a waste heat source and a heat-release part that releases, to an indoor heat exchanger, heat transmitted to the heat-release part, and that is switchable between (a) a heat-releasing state in which the waste heat recovered by the waste heat recovery part is transmitted to the heat-release part, and (b) a heat-release-stopped state in which the heat recovered by the waste heat recovery part is less transmittable than when in the heat-releasing state; and a controller to switch between (i) a heat-release-stopped state when the refrigerant is being exchanged between the indoor heat exchanger and the cooperative device group, and (ii) a heat-releasing state when the exchange of the refrigerant is stopped.

A heat exchanger for an air-conditioning circuit of a vehicle. The heat exchanger enables heat exchange between fluids and has a surface in contact with one of the fluids. The surface is formed from aluminum and/or from aluminum alloy. The surface is coated with an alumina layer and a reinforcing layer. The reinforcing layer includes an organic substance and a mineral substance. The organic substance includes at least one polymer and the mineral substance is capable of reacting with the aluminum in order to form an anticorrosion material.

A heat exchanger for an air-conditioning circuit of a vehicle. The heat exchanger enables heat exchange between fluids and has a surfaces in contact with one of the fluids. The surface is formed from aluminum and/or from aluminum alloy. The surface is coated with an alumina layer and a reinforcing layer. The reinforcing layer includes an organic substance and a mineral substance. The organic substance includes at least one polymer and the mineral substance is capable of reacting with the aluminum in order to form an anticorrosion material.

Methods and systems for reducing microbial contamination and growth in an HVAC system by irradiating one or more air contacting surfaces of the HVAC system with antimicrobial UV-C light.