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A method for determining the applicable area of ​​fresh air purifiers based on purification performance

A purification performance and purification machine technology, applied in the direction of permeability/surface area analysis, machine/structural component testing, suspension and porous material analysis, etc., can solve the problems of evaluation, floor space and energy consumption waste, clean fresh air volume to meet Can not purify the indoor air and other problems, to achieve the effect of accurate and reliable applicable area

Active Publication Date: 2022-04-01
CHINA HOUSEHOLD ELECTRIC APPLIANCE RES INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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 actual use needs to be further verified. It is impossible to scientifically and systematically simulate and evaluate the purification performance of the fresh air purifier, which has brought great difficulties to people in determining the applicable area of ​​the fresh air purifier. Errors can easily lead to excessive clean fresh air volume, resulting in waste of installation costs, floor space and energy consumption, and low clean fresh air volume cannot meet the needs of indoor air purification.

Method used

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  • A method for determining the applicable area of ​​fresh air purifiers based on purification performance
  • A method for determining the applicable area of ​​fresh air purifiers based on purification performance
  • A method for determining the applicable area of ​​fresh air purifiers 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 present disclosure provides a method for determining the applicable area of ​​a fresh air purifier based on the purification performance, including: S1, using a fresh air purifier performance test system that can provide a micro-positive pressure test environment to test the purification performance index of the fresh air purifier, after placing The test with a fresh air purifier simulates the introduction of background pollutants into the cabin, and the target pollutants are stably produced at the fresh air inlet outside the cabin, and the concentrations corresponding to multiple time points between the initial concentration and the final concentration are measured; S2, passing through the cabin The internal pollutant mass conservation establishes the pollutant diffusion and transmission process model, calculates the purification performance index according to the test results, and deduces the applicable area of ​​the fresh air purifier under the set air volume conditions or set working conditions according to the purification performance index. This method provides calculation formulas under various pollutant conditions, comprehensively considers the final applicable area according to the calculation results under all conditions, and solves the problem that the current applicable area can only be obtained by simple estimation.

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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Patent Type & Authority Patents(China)
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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