Method and system for controlling an automotive multizone HVAC system
A method for controlling the temperature of two or more zones inside a vehicle using an HVAC system. In one aspect, a method for controlling temperature inside a vehicle is provided that comprises determining a power required to control the temperature of a first zone of the vehicle and determining a discharge air temperature for one of the first zone and a second zone of the vehicle based on a mass transfer between the first zone and a second zone of the vehicle. In another aspect, a method for controlling temperature inside a vehicle is provided that comprises determining a power required for a first zone and a third zone of the vehicle, determining a mass transfer in a second zone of the vehicle, and determining a discharge temperature for one of the first zone, second zone, and third zone of the vehicle based on a mass transfer between two zones of the vehicle.
1 . A method for controlling temperature inside a vehicle comprising:
(a) determining a power for a first zone of the vehicle; and
(b) determining a discharge air temperature for one of the first zone and a second zone of the vehicle using a mass transfer between the first zone and the second zone of the vehicle.
2 . The method of claim 1 , further comprising obtaining a mass transfer in the second zone.
3 . The method of claim 1 , wherein the discharge air temperature is determined using the power and the mass transfer in the first zone.
4 . The method of claim 1 , wherein the mass transfer is determined from an empirical relationship between power and mass transfer.
5 . The method of claim 1 , wherein the discharge air temperature for each zone depends on a target temperature for each zone.
6 . The method of claim 1 , wherein the power is determined using at least one parameter selected from a group consisting of outside ambient temperature, vehicle interior temperature, and solar intensity.
7 . The method of claim 1 , wherein the discharge air temperature of a zone depends on a mass transfer due to an input and convection of air into the vehicle.
8 . The method of claim 1 , wherein the discharge air temperature of a zone depends on an area of the zone.
9 . The method of claim 1 , wherein the mass transfer in the first zone is due to an input and convection of air inside the vehicle.
10 . The method of claim 1 , wherein a vehicle interior air temperature of the first zone is determined based on a vehicle interior air temperature of the second zone.
11 . The method of claim 1 , wherein the discharge air temperature of a zone depends on the discharge air temperature of another zone.
12 . The method of claim 1 , wherein the discharge air temperature of a zone depends on at least one parameter selected from a group consisting of thermal conductivity of a vehicle shell, surface area of a vehicle shell, effective glass area, specific heat of air, discharge air temperature, discharge airflow, outside ambient temperature, and solar intensity.
13 . A method for controlling temperature inside a vehicle comprising:
(a) determining a power for a first zone and a third zone of the vehicle;
(b) obtaining a mass transfer in a second zone of the vehicle; and
(c) determining a discharge temperature for one of the first zone, second zone, and third zone of the vehicle based on a mass transfer between two zones selected from a group consisting of the first zone, second zone, and third zone of the vehicle.
14 . The method of claim 13 , wherein the mass transfer is determined from an empirical relationship between mass transfer and power.
15 . The method of claim 13 , wherein the power is determined using at least one parameter selected from a group consisting of outside ambient temperature, vehicle interior air temperature, and solar intensity.
16 . The method of claim 13 , wherein the discharge air temperature of a zone depends on a target temperature for the zone.
17 . The method of claim 13 , wherein the discharge air temperature of each zone depends on a mass transfer due to an input and convection of air into the vehicle.
18 . The method of claim 13 , wherein the discharge air temperature of a zone depends on an area of the zone.
19 . The method of claim 13 , wherein the discharge air temperature for a zone depends on a discharge temperature of at least one other zone.
20 . The method of claim 13 , wherein the discharge air temperature of a zone depends on at least one parameter selected from a group consisting of thermal conductivity of a vehicle shell, surface area of a vehicle shell, effective glass area, specific heat of air, discharge air temperature, discharge airflow, outside ambient temperature, and solar intensity.