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Indoor VOCs dispersion predication based demand control ventilating system and method

A demand control and ventilation system technology, applied in the field of indoor pollutant treatment, can solve problems such as low precision, unreliability, and large errors, and achieve the effect of improving the effect, wide application, and easy acquisition

Active Publication Date: 2019-05-14
CHONGQING UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The inventors found that the existing ventilation systems and methods tend to have the following problems: the indoor fixed ventilation mode ventilation is unreasonable
It regulates the ventilation volume according to the concentration of VOCs. However, the sensors used to monitor the concentration of VOCs on the market are generally not very accurate and have large errors. Therefore, it is very unreliable to use it as an input parameter for demand control, and high-precision VOCs monitoring instruments are very expensive. , it is difficult to apply

Method used

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  • Indoor VOCs dispersion predication based demand control ventilating system and method
  • Indoor VOCs dispersion predication based demand control ventilating system and method
  • Indoor VOCs dispersion predication based demand control ventilating system and method

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Effect test

Embodiment 1

[0062] see figure 1 and figure 2 , demand control ventilation system based on indoor VOCs emission prediction, mainly including ambient temperature monitoring system 1, data storage and display system 2, calculation control system 3, fan regulation system 4 and fans.

[0063] The ambient temperature monitoring system 1 includes several temperature sensors arranged on indoor building materials.

[0064] The sensors include but are not limited to expansion type, resistance type and thermocouple type. The measurement range and accuracy of the sensor meet GB / T 50785-2012 "Evaluation Standard for Indoor Heat and Humidity Environment of Civil Buildings", JGJT 347-2014 "Building Thermal Environment Test "Method Standard" and other national standards, the temperature measurement range is -10°C to 50°C, and the measurement accuracy is ±0.5°C. When the building material is not obviously affected by the heat radiation source, the temperature value T(k) of the building material can be ...

Embodiment 2

[0079] see Figure 2 to Figure 5 , using the method of demand control ventilation system based on indoor VOCs emission prediction, mainly including the following steps:

[0080] 1) Arrange a demand-controlled ventilation system based on indoor VOCs emission prediction indoors.

[0081] 2) The ambient temperature monitoring system 1 monitors the temperature T of indoor building materials, and sends the temperature T of indoor building materials to the data storage and display system 2 and the calculation control system 3 .

[0082] 3) Based on the information of indoor building materials, the pollutant emission rate E under the standard working conditions of building materials can be obtained 0 , or the building material emission rate E obtained under experimental test conditions with known conditions 1 . Obtain the degree of interior decoration α.

[0083] The calculation method of decoration degree α is as follows, choose one of the two:

[0084] I) Through the building ...

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Abstract

The invention discloses an indoor VOCs dispersion predication based demand control ventilating system and method. The system mainly comprises an environmental temperature monitoring system, a data storing displaying system, an operation control system, an air blower adjusting system and an air blower. The method mainly comprises the following steps: 1) monitoring the temperature T of indoor building materials through the environmental temperature monitoring system; 2) acquiring indoor building material information through the data storing displaying system; 3) operating to obtain real-time dispersion rate E of pollutants in actual building material environment based on the parameter value in a building material dispersion predication model; 4) inputting a VOC pollutant concentration control target Ci; 5) calculating the demand control ventilating capacity Q'; 6) converting the demand control ventilating capacity Q' into air blower power P through the operation control system; and 7) adjusting the air blower power through the air blower adjusting system based on the calculation value of the air blower power P. With the adoption of the system and the method, the indoor VOCs pollutionconcentration can be predicated, and fresh air volume can be adjusted in real time, so that the energy-saving building and healthy building targets can be achieved with reasonable ventilating capacity.

Description

technical field [0001] The invention relates to the field of indoor pollutant treatment, in particular to a demand control ventilation system and method based on indoor VOCs emission prediction. Background technique [0002] In recent years, with the continuous improvement of people's living standards, interior decoration has become complex and diverse. And these home improvement materials will release volatile organic compounds (Volatile organic compounds, referred to as VOCs) during use. These gases have many adverse effects on human health, such as allergies, asthma, and even lead to major problems such as cancer. At present, the methods to solve indoor VOCs pollution mainly include ventilation and dilution, purification and adsorption, and photocatalyst decomposition. Among them, ventilation and dilution are the most effective, and more environmentally friendly and economical, so independent fresh air and air conditioning systems for civil buildings are becoming more an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24F11/74F24F11/52F24F11/64F24F110/66
CPCY02B30/70
Inventor 刘红吴语欣喻伟卢星宇侯芳郭淼徐峥
Owner CHONGQING UNIV
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