The invention relates to a method for operating a ventilation system for indoor air in an indoor space, in particular a motor vehicle. The method comprises the steps of: providing a fresh air portion of supplied fresh air and a recirculated air volume flow according to a predetermined or selected operating strategy; determining settings for a recirculated air actuator for adjusting a fresh air portion, in particular a recirculated air flap or a recirculated air valve, and a fan power of a fan for adjusting a mixed air volume flow (Q.sub.M) of supplied recirculated and fresh air; increasing the fresh air portion and/or the mixed air volume flow (Q.sub.M) as a function of a pathogen filtration efficiency of a cabin filter and a predetermined contamination prevention volume flow as a pathogenic indoor concentration limit value (C.sub.P) for a maximum concentration of pathogenic aerosols.

Various implementations include a device for monitoring gas that includes a sensor, a first conduit, a second conduit, a first valve, and a second valve. The sensor includes an inlet and outlet port and is configured to monitor a feature of the gas flowing through an HVAC unit. The first conduit includes a first end and a second end spaced apart from the first end. The second end of the first conduit is in fluid communication with the inlet port of the sensor. The second conduit includes a first end and a second end spaced apart from the first end. The first end of the second conduit is in fluid communication with the outlet port of the sensor. The first valve is upstream from and in fluid communication with the inlet port, and the second valve is downstream from and in fluid communication with the outlet port.

Device for treating air and/or surfaces with treatment substance for disinfecting, can include a blower for sucking and blowing air, at least one conveying device for conveying the treatment substance, and at least one feed nozzle for feeding the treatment substance, wherein the feed nozzle is connectable to the conveying device via a connection line. The at least one feed nozzle can be arranged in the air flow of the blower, wherein the at least an end of a feed nozzle is removable and can also be arranged at a distance from the device, and can be connected to a ventilation duct of a ventilation and/or air-conditioning system of an environment. Additionally or alternatively, at least one further feed nozzle, which is connected or connectable to the conveying device via a connecting line, can be connected to a ventilation duct of a ventilation and/or air-conditioning system of the environment.

A ventilation system is adapted to be used in a vehicle. The vehicle includes a vehicle body that defines an interior space. The ventilation system includes a vent pipe and a fan. The vent pipe is adapted to be disposed on the vehicle body, and has an outside communicating end via which the vent pipe is adapted to communicate with the outside of the vehicle body, and an inside communicating end via which the vent pipe is adapted to communicate with the interior space. The fan is disposed in the vent pipe, and is configured to be activated to produce airflow from the outside communicating end to the inside communicating end.

An air conditioning system provides inside air conditioning and performs the function of cleaning the inside air, so that the inside air is maintained to be pleasant. The air cleaning time of cleaning the inside air is decreased, so the possibility of moisture generated on an inside window due to the air cleaning is reduced.

A vehicle heating, ventilation, and air conditioning (HVAC) system including a cabin air filter, a sensor for providing a sensor reading, and a controller for determining a feedback signal from the sensor reading, wherein the controller determines a cabin air filter expected blockage level from the feedback signal. The feedback signal relates to a usage modifier of the cabin air filter, wherein the controller at east partially adjusts the estimated usage the cabin air filter from the usage modifier.

Disclosed herein is a system for controlling direct and indirect multifunctional air vents, which includes an air vent mounted inside a dashboard in an interior of a vehicle, and configured to guide air flowing from a vehicle air conditioner to the interior of the vehicle while switching to a direct wind mode or an indirect wind mode, a mode input module provided outside the vehicle such that a user selects one of the direct wind mode and the indirect wind mode, and a controller configured to control the air vent to switch the mode of the air vent in response to the mode selected by the user through the mode input module.

Vehicle comprising a passenger compartment and a system for cleaning the passenger compartment comprising at least one measuring member for measuring the level of dirtiness of said passenger compartment, at least one heating member configured to heat the ambient air of the passenger compartment to a temperature higher than 40° C. in order to desorb the impurities in the passenger compartment, at least one ventilation member configured to remove the ambient air and the desorbed impurities to outside the passenger compartment and at least one control member configured to activate the heating member if the measured level of dirtiness is above a predetermined maximum level of dirtiness.

A heat pump system, a heat management method and a vehicle are provided. The heat pump system includes an integrated heat exchanger integrated with a superconducting liquid flow passage and a refrigerant flow passage. The refrigerant flow passage is provided inside an on-board refrigerant circulation loop and is used for cooling and/or heating to adjust the temperature within a passenger compartment of a vehicle. The superconducting liquid flow passage is in communication with a motor heat dissipating conduit, for absorbing the heat generated by an on board motor and transferring the heat to the integrated heat exchanger by means of phase change heat transfer. The heat pump system can increase the energy utilization rate for the vehicle and reduce the allowable ambient temperature of the heat pump system.

A method for autonomous climate control optimization of a transport vehicle having a climate control system is provided. The method includes a controller receiving geolocation specific data providing location information of the transport vehicle. The method also includes the controller receiving climate control data providing operational status information of the climate control system. The method also includes the controller receiving passenger/load data providing passenger/load information travelling in the transport vehicle. Also, the method includes the controller generating adjustment instructions of the climate control system based on the geolocation specific data, the climate control data, and the passenger/load data. Further, the method includes adjusting operation of the climate control system based on the adjustment instructions.