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

Solid-state light source photolytic nitrogen dioxide converter

A solid-state light source and converter technology, which is applied in the direction of detection of element existence through oxidation, instruments, scientific instruments, etc., can solve the problems of short photon residence time, low efficiency, high cost, etc., and achieve the effect of reducing costs and maintenance costs

Inactive Publication Date: 2006-01-11
AIR QUALITY DESIGN
View PDF2 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these references suffer from one or more of the following disadvantages: non-specific wavelength emission, short photon residence time, high cost and low efficiency

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
  • Solid-state light source photolytic nitrogen dioxide converter
  • Solid-state light source photolytic nitrogen dioxide converter
  • Solid-state light source photolytic nitrogen dioxide converter

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0065] Dual LED Module Converter

[0066] according to figure 1 A solid-state light source photolysis nitrogen dioxide converter 100 is constructed. This example includes two commercially available LED modules 122 and 132 (Roithner Lasertechnik, Austria), each including 60 low power LED dies. The module was powered using a small AC-DC power supply 232 (Acopian Inc, Pennsylvania). In operation, LED modules 122 and 132 generate heat that must be dissipated. This was achieved by mounting the modules on high efficiency forced air radiators 104 and 110 (Cool Innovations, Inc, Canada). In this configuration, the LED modules 122 and 132 are mounted on an aluminum body 102 comprising diffuse reflective Teflon TM Base reflective material 116 (GigaHertz Optik, Germany). Reaction chamber 120 consists of a cylindrical cavity extending through reflective material 116 . The wall thickness of the reaction chamber 120 is designed to be about 1 cm, which is the minimum th...

Embodiment 2

[0069] Diode laser NO 2 Converter

[0070] according to figure 2 A solid-state light source photolysis nitrogen dioxide converter 200 is constructed. The solid-state light source photolysis nitrogen dioxide converter 200 uses a commercially available set of diode lasers 202 with a wavelength of 395nm, the radiation output power is 25mW, and the beam size is about 3x6mm. The reaction tubes 204 and 206 used with the diode laser 202 consisted of four 12-inch long glass tubes with an internal diameter of 5 mm and a total internal volume of approximately 17 mL (typically at a flow rate of 1 liter per minute, residence time for one second). The reaction tube is coated with Teflon TM The aluminum blocks 214 in which ports and channels are formed are connected. A hermetic seal is formed using a prism 208 for sequentially directing the light beams into each reaction tube, which is mounted on an O-ring of the block 214 . A schematic diagram of this embodiment is show...

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

PropertyMeasurementUnit
Conversion efficiencyaaaaaaaaaa
Login to View More

Abstract

The present invention provides a solid-state light source photolytic NO2 converter (100) including a reaction chamber (102) made of a reflective material (116) with diffuse reflective properties, whereby the reaction chamber includes a low volume gas cell (102) wherein the gas sample residence time is less than 5 seconds is provided. The NO2 in the air sample is exposed to ultraviolet radiation at wavelengths less than 420 nm, whereby the NO2 is converted to NO. The NO is subsequently measured using an NO analyzer. The solid-state light source includes diode lasers (202) and LED's (122, 132) that emit UV wavelength in the range of 350 - 420 nm. The use of a narrow wavelength range afforded by the solid-state light source results in an interference-free conversion of NO2 to NO at high efficiency.

Description

field of invention [0001] The present invention relates to nitrogen dioxide converters, and more particularly to nitrogen dioxide converters with solid state light sources, which are capable of converting NO at high efficiency without interference 2 Converted to NO, the nitrogen dioxide converter has low operating and maintenance costs. Background technique [0002] According to the National Ambient Air Quality Standards (NAAQS), nitrogen dioxide (NO 2 ) is a health hazard and will NO 2 The allowable content limit in ambient air is 0.053ppm (parts per million). In addition, NO 2 The photochemical production of ozone (O 3 ) plays an important role. For the two reasons above, various methods have been developed to measure NO in ambient air. 2 method of concentration. The goal of these research methods is to achieve from NO 2 Higher conversion efficiency to NO (nitrogen monoxide) and minimized interference from other reactive species nitrogenous s...

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): G01N21/63G01N33/00G01N21/05G01N21/03G01N31/00
CPCG01N21/631G01N33/0037G01N31/005G01N2021/0325G01N21/05Y02A50/20
Inventor 马丁·帕特里克·布尔
Owner AIR QUALITY DESIGN
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