Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method for air change rate measurement in dwellings based on CO2 (carbon dioxide) produced by people

A technology of ventilation volume and human body, applied in the direction of measuring flow/mass flow, liquid/fluid solid measurement, measuring devices, etc., can solve problems such as limitations and uneven distribution of CO2 concentration

Inactive Publication Date: 2015-09-23
TIANJIN UNIV
View PDF4 Cites 13 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problems existing in the prior art, the present invention provides a method for measuring the ventilation volume of multi-zone buildings based on the exhaled CO2 of the human body, which overcomes the limitation of measuring multi-zone buildings with uneven CO2 concentration distribution in the prior art

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for air change rate measurement in dwellings based on CO2 (carbon dioxide) produced by people
  • Method for air change rate measurement in dwellings based on CO2 (carbon dioxide) produced by people
  • Method for air change rate measurement in dwellings based on CO2 (carbon dioxide) produced by people

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0026] A preferred embodiment of the present invention resides in the calculation of multi-zone building ventilation during the night's sleep. Personnel CO during this period 2 The generation rate and the opening and closing of doors and windows are in a constant state. In the case of no sudden change in outdoor climate conditions, the building ventilation rate is considered to be a constant value.

[0027] In order to make the technical solution of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings. For the specific test and calculation flow chart, see figure 1 .

[0028] First thing to describe is to obtain CO in the present invention 2 The test method of the concentration field test data, the specific test method includes the following steps, the process can be found in figure 1 :

[0029] 1) Place CO in rooms where people frequently move 2 Concentration testing instruments, such...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention provides a method for air change rate measurement in dwellings based on carbon dioxide produced by people. The method includes the steps of placing a CO2 concentration measurer, and drawing a planar space graph; recording personal information of dwellers and opening and closing conditions of doors and windows of a measured space; enabling the CO2 concentration measurer to work continuously for more than 24 hours; partitioning the measured space into one or more regions; calculating volumes of the regions; calculating the amount of CO2 produced by the people in every region according to height, weight and activity types of the dwellers; assuming an initial value of air change rate for each region; changing the assured air change rate of each region, and fitting a CO2 concentration curve so as to obtain an air change rate result of each region finally. An existing method for measuring the air change rate by tracer gas is limited economically and practically, and a method taking CO2 as the tracer gas is limited in single-region buildings. The method for the air change rate measurement has the advantages that by effective assuming, calculation for the air change rate measurement can be applied to multi-region spaces, the calculation problem for the air change rate of the multi-region spaces is solved, and the real-time air change rate of the multi-region spaces can be measured simply, conveniently, quickly and effectively.

Description

technical field [0001] The invention belongs to the technical field of building measurement, and in particular relates to a method for measuring multi-zone building ventilation. Background technique [0002] At present, tracer gas technology is mostly used in the measurement and calculation of building ventilation. The tracer gas technique calculates the building ventilation rate according to the tracer gas mass conservation equation. According to the tracer gas release and monitoring form, the technology can be divided into three categories: (1) tracer gas constant release method; (2) tracer gas attenuation method; (3) tracer gas constant concentration method. The tracer gas constant release method is to continuously release the tracer gas into the test space at a constant speed, monitor and record the gas concentration, and use it to calculate the ventilation rate. The tracer gas attenuation method is to release a certain amount of tracer gas into the test space. After t...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): G01F1/00G01N33/00
Inventor 孙越霞侯静
Owner TIANJIN UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com