Method for determining applicable area of fresh air purifier based on purification performance

A technology of purification performance and purification machine, which is used in permeability/surface area analysis, testing of machine/structural components, measuring devices, etc., which can solve the problems of simulation, applicable area error of fresh air purification machine, and high clean fresh air volume.

Active Publication Date: 2019-12-17
CHINA HOUSEHOLD ELECTRIC APPLIANCE RES INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0010] The existing fresh air purifier test system ignores the influence of parameters such as the internal and external pressure of the system, the fresh air volume, the relative position between the indoor air supply port and the air exhaust port, and the size of the test space on the distribution of the indoor pollutant concentration flow field, and the sampling points are Whether the measured concentration can represent the diffusion and transmission characteristics of pollutants in actua

Method used

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  • Method for determining applicable area of fresh air purifier based on purification performance
  • Method for determining applicable area of fresh air purifier based on purification performance
  • Method for determining applicable area of fresh air purifier based on purification performance

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Embodiment 1

[0152] In a first exemplary embodiment of the present disclosure, a method for determining an applicable area of ​​a fresh air purifier based on purification performance is provided. In this embodiment, the standard pollutants are particulate matter as an example: potassium chloride (KCl), the number of particles with a diameter above 0.3 μm, and a mass concentration of 10% KCl. In this embodiment, the performance index is fresh air purification efficiency, and the step S1 purification performance index test includes the following specific test steps:

[0153] Open the test prototype 5, the air blower 19, the auxiliary fan 25, and adjust the pressure difference inside and outside the cabin;

[0154] Turn on the purification system in the test simulation cabin for background purification. After background purification, the number of particles of 0.3 μm and above in the cabin should not exceed 1000 / L;

[0155] Close test prototype 5, air blower 19, auxiliary fan 25;

[0156] T...

Embodiment 2

[0219] In the second exemplary embodiment of the present disclosure, a method for determining the applicable area of ​​the fresh air purifier based on the purification performance is also provided. Different from the first embodiment, the standard pollutant in this embodiment is formaldehyde (indoor pollutant) as an example. For the removal effect of indoor pollutants, the mass conservation equation (1.3) is also applicable, but the indoor source intensity E needs to be supplemented, as follows:

[0220]

[0221] Since indoor pollutants mainly exist indoors, it can be considered that the outdoor concentration C 1 =0, (1.10) can be transformed into,

[0222]

[0223] when steady state

[0224] 0 = -Q R Cε R -k 0 VC-kVC-Q P C+E................................(1.12)

[0225]

[0226] When the doors and windows are closed indoors and the purification device is not used, and the natural attenuation (k=0) is not considered, the release rate of the formaldehyde source...

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Abstract

The invention provides a method for determining the applicable area of a fresh air purifier based on purification performance. The method comprises the following steps: S1, a fresh air purifier performance test system capable of providing a micro-positive pressure test environment is adopted for testing the purification performance index of a fresh air purifier, a background pollutant is introduced into a test simulation cabin in which the fresh air purifier is placed, a target pollutant is stably generated at a fresh air inlet outside the cabin, and concentrations corresponding to a pluralityof time points between the initial concentration and the final concentration are measured; and S2, a pollutant diffusion transmission process model is established based on mass conservation of pollutants in the cabin, the purification performance index is calculated according to a test result, and the applicable area of the fresh air purifier under a set air volume condition or a set working condition is deduced according to the purification performance index. According to the method, calculation formulas under various pollutant conditions are provided, the final applicable area is comprehensively considered according to calculation results under all the conditions, and the problem that the applicable area can only be obtained through simple estimation at present is solved.

Description

technical field [0001] The present disclosure relates to the field of fresh air purifiers, and in particular to a method for determining an applicable area of ​​a fresh air purifier based on purification performance. Background technique [0002] With the continuous improvement of living standards, people put forward higher requirements for a healthy living environment, especially for indoor air quality. Affected by the decline of outdoor air quality and changes in temperature and humidity, workplaces and family living rooms are often closed, and factors such as the gathering of people, the release of pollutants from decoration materials, and poor air mobility can easily cause indoor air pollution, which is harmful to human health. pose a serious threat. [0003] The fresh air purifier introduces the filtered outdoor fresh air into the room through the fan, and discharges the indoor dirty air to the outside to improve the indoor air quality by replacing the indoor and outdo...

Claims

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Application Information

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IPC IPC(8): G01M99/00G01N15/08
CPCG01M99/005G01M99/008G01N15/08G01N2015/084
Inventor 马德军张晓莫金汉张维超郭侃孟晓山
Owner CHINA HOUSEHOLD ELECTRIC APPLIANCE RES INST
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