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

Screen window small and micro pressure drop test device based on small wind tunnel

A technology of testing device and screen window, applied in the direction of measuring device, testing of machine/structural components, aerodynamic test, etc. Effect

Active Publication Date: 2022-05-10
SOUTHEAST UNIV
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the existing screen window pressure drop measurements all rely on high-precision micro-manometers (accuracy ± 0.1Pa), and the instrument cost is relatively high

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
  • Screen window small and micro pressure drop test device based on small wind tunnel
  • Screen window small and micro pressure drop test device based on small wind tunnel
  • Screen window small and micro pressure drop test device based on small wind tunnel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A small and micro pressure drop test device for screen windows based on a small wind tunnel of the present invention includes an air inlet section, an experimental section and an air outlet section connected in sequence, and the air inlet section includes an inlet section 1, a flow equalization section 2 and a transition section connected in sequence 3. The entrance section 1 is a double-twisted tapered circular air duct, the entrance radius of the entrance section 1 is 0.2m, the exit radius of the entrance section 1 is 0.125m, and the length of the entrance section 1 is 0.2m; figure 2 As shown, the equalizing section 2 is a circular metal equalizing plate, and the diameter of the orifice plate is uniformly distributed with 8mm round holes; the transition section 3 is a cylindrical air duct, the radius of the transition section 3 is 0.125m, and the length of the transition section 3 is 0.2m.

[0026] Such as image 3 and Figure 4 As shown, the experimental section 4...

Embodiment 2

[0028] The structure of Example 2 is the same as that of Example 1, except that the length of each cylindrical air duct in the experimental section 4 is 0.2 m.

Embodiment 3

[0030] The structure of Example 3 is the same as that of Example 1, except that the length of each cylindrical air duct in the experimental section 4 is 0.3 m.

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 discloses a screen window small and micro pressure drop test device based on a small wind tunnel, which comprises a sequentially connected air inlet section, an experimental section and an air outlet section. Transition section, the experimental section includes 5 sections of cylindrical air ducts connected in succession, screen windows are installed between adjacent cylindrical air ducts, and the air outlet section includes an outlet section and a fan positioned at the front end of the outlet section; the experimental section A handheld hot-wire anemometer is connected through a pitot tube. The present invention utilizes air ducts to simulate wind tunnels, and reproduces the wind field during natural ventilation of buildings to the greatest extent, which is convenient for the small and micro pressure drop test of screen windows; secondly, the present invention sets multi-layer screen windows between adjacent air ducts in the experimental section, and the measurement passes The pressure difference of the multi-layer screen window can reduce the requirement for the accuracy of the instrument, and at the same time, it can eliminate the influence of the wake passing through the screen window, making the experimental results more accurate and reliable, and saving the cost of the experimental equipment.

Description

technical field [0001] The invention relates to a screen window grouting measurement device, in particular to a screen window small and micro pressure drop test device based on a small wind tunnel and a control system thereof. Background technique [0002] Natural ventilation refers to the ventilation method that uses fresh air with a lower outdoor temperature to ventilate and cool industrial and civil buildings under the combined action of heat pressure and wind pressure. It uses natural means to introduce outdoor fresh air through the windows and doors of the building. A ventilation method in which air is used to achieve ventilation. Reasonable natural ventilation can not only make the indoor hot and humid environment meet indoor comfort conditions, improve indoor air quality, but also use natural ventilation technology to effectively achieve passive cooling, which can achieve the purpose of reducing building energy consumption and saving energy. When using natural ventil...

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
Patent Type & Authority Patents(China)
IPC IPC(8): G01M9/00G01M9/04
CPCG01M9/00G01M9/04
Inventor 钱华曹丽丹郑晓红
Owner SOUTHEAST 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