Multi-mode air supply terminal and method

A multi-mode air supply method, comprising:

• acquiring position information of a target to be supplied with air, and ventilation demand information, wherein the ventilation demand information comprises a set temperature and/or a limited concentration of pollutants;
• determining an air supply terminal closest to the target to be supplied with air according to the position information of the target to be supplied with air, wherein the air supply terminal is provided with a plurality of air supply modes;
• determining a target air supply mode and a target air supply parameter corresponding to the air supply terminal according to the position information of the target to be supplied with air, and the ventilation demand information;
• and
• controlling the air supply terminal to carry out air supply on the basis of the target air supply mode and the target air supply parameter;
• wherein the determining a target air supply mode and a target air supply parameter corresponding to the air supply terminal according to the position information of the target to be supplied with air, and the ventilation demand information comprises:
• determining the target to be supplied with air is located at a set position according to the position information, and determining the ventilation demand information is the set temperature, then determining the target air supply mode to be a pore-plate air supply mode, calculating an air supply temperature of the pore-plate air supply port according to the set temperature, and determining the air supply temperature of the pore-plate air supply port to be the target air supply parameter;
• determining the target to be supplied with air is located at the set position according to the position information, and determining the ventilation demand information is the limited concentration of pollutants, then determining the target air supply mode to be an air-curtain air supply mode or the pore-plate air supply mode, calculating an air supply volume of the air-curtain air supply port or an air supply volume of the pore-plate air supply port according to the limited concentration of pollutants, and determining the air supply volume of the air-curtain air supply port or the air supply volume of the pore-plate air supply port to be the target air supply parameter;
• determining the target to be supplied with air is located at the set position according to the position information, and determining the ventilation demand information is the set temperature and the limited concentration of pollutants, then determining the target air supply mode to be an air curtain-pore plate combined air supply mode, respectively calculating an air supply volume of the air-curtain air supply port and an air supply temperature of the pore-plate air supply port according to the limited concentration of pollutants and the set temperature, and determining the air supply volume of the air-curtain air supply port and the air supply temperature of the pore-plate air supply port to be the target air supply parameters;
• and
• determining the target to be supplied with air is not located at the set position according to the position information, then determining the target air supply mode to be a directional air supply mode or a mixed air supply mode, and determining the target air supply parameter to be an air supply angle calculated in real time or a basic air supply angle;
• wherein the calculating the air supply temperature of the pore-plate air supply port according to the set temperature comprises:
• obtaining an initial environment temperature, an air supply density, intensity of a heat source, specific heat capacity of air, and an air supply volume of the pore-plate air supply port;
• determining first accessibility of the pore-plate air supply port to a position of the target to be supplied with air, and second accessibility of the heat source to the position of the target to be supplied with air;
• and
• calculating an air supply temperature of the pore-plate air supply port according to the set temperature, the initial environment temperature, the air supply density, the intensity of the heat source, the specific heat capacity of air, the air supply volume of the pore-plate air supply port, the first accessibility, and the second accessibility, and a calculation formula for the temperature difference of the pore-plate air supply port is as follows:
• θ
• set
• Target
• ,
• j
• =
• ∑
• n
• S
• =
• 1
• N
• S
• [
• θ
• S
• n
• S
• ⁢
• a
• θ
• ,
• S
• n
• S
• ,
• Target
• ,
• j
• ]
• +
• ∑
• n
• H
• =
• 1
• N
• H
• [
• q
• n
• H
• p
• ⁢
• C
• p
• ⁢
• Q
• ⁢
• a
• θ
• ,
• H
• n
• H
• ,
• Target
• ,
• j
• ]
• wherein θsetTarget,j is a preferred temperature difference of the target j to be supplied with air, the preferred temperature difference θsetTarget,j is obtained by subtracting the set temperature from the known initial environment temperature, θSnS is temperature difference of the pore-plate air supply port, and the air supply temperature of the pore-plate air supply port is obtained by adding the obtained temperature difference θSnS of the pore-plate air supply port to the initial air supply temperature of the pore-plate air supply port;
• aθ,SnS,Target,j is the first accessibility of the nsth pore-plate air supply port to the position of the target to be supplied with air;
• ρ is the air supply density, qnH is the intensity of the nHth heat source, Cp is the specific heat capacity of air, Q is the air supply volume of the pore-plate air supply port, and specifically, the air supply volume of the pore-plate air supply port is detected through a sensor;
• and aθ,HnH,Target,j is the second accessibility of the nHth heat source to the position of the target to be supplied with air;
• wherein the determining the target air supply mode to be a directional air supply mode or a mixed air supply mode, and determining the target air supply parameter to be the air supply angle calculated in real time or the basic air supply angle comprises:
• determining the target to be supplied with air is not located at the set position according to the position information, and does not have a mixed ventilation requirement, then determining the target air supply mode to be a directional air supply mode, calculating the air supply angle of the air-curtain air supply port in real time according to the position information, and determining the calculated air supply angle to be the target air supply parameter;
• wherein the calculating the air supply angle of the air-curtain air supply port in real time according to the position information comprises:
• determining a vertical distance and a horizontal distance between the head of the target to be supplied with air and the air-curtain air supply port according to the position information;
• calculating an equivalent diameter of the air-curtain air supply port;
• and
• calculating the air supply angle of the air-curtain air supply port in real time according to the vertical distance, the horizontal distance, and the equivalent diameter, and a calculation formula is as follows:
• z
• d
• =
• x
• d
• ⁢
• tan
• ⁢
• β
• +
• gd
• ⁡
• (
• T
• s
• -
• T
• j
• )
• V
• s
• 2
• (
• T
• j
• +
• 273.15
• )
• ⁢
• (
• x
• d
• ⁢
• cos
• ⁢
• β
• )
• 2
• ⁢
• (
• 0.51
• ax
• d
• ⁢
• cos
• ⁢
• β
• +
• 0.35
• )
• wherein β is the air supply angle, z is the vertical distance between the head of the indoor person and the air-curtain air supply port, Ts is the air supply temperature of the air-curtain air supply port, Tj is a temperature near the indoor person, Vs is an air supply speed of the air-curtain air supply port, Ts, Tj, and Vs are detected through sensors, g is the gravity acceleration, x is the horizontal distance between the head of the indoor person and the air-curtain air supply port, α is a turbulence coefficient, d is the equivalent diameter of the air-curtain air supply port, d=1.13√{square root over (ab)}, and a and b are length information and width information of a rectangle corresponding to the air-curtain air supply port.