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

A method for calibrating heat flow meter with black body radiation

A technology of black body radiation and heat flow meter, which is applied in the directions of radiometer effect, radiation pressure, material thermal development, etc., and can solve the problems of inaccurate methods and so on.

Active Publication Date: 2016-05-04
INST OF MECHANICS CHINESE ACAD OF SCI
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to overcome the inaccurate defect of the prior art calibration method based on the ideal model, and propose a method for calibrating the heat flow meter by black body radiation, so as to accurately calibrate the heat flow meter

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
  • A method for calibrating heat flow meter with black body radiation
  • A method for calibrating heat flow meter with black body radiation
  • A method for calibrating heat flow meter with black body radiation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0016] Embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined arbitrarily with each other.

[0017] The invention provides a black body radiation calibration method of a heat flow meter under the condition of non-uniform temperature of a black body cavity.

[0018] Such as figure 1 As shown, extend the heat flow meter into the blackbody furnace, the two sides are the bottom of the blackbody cavity, and the radius is r 2 , 3 segments are cylinders with length L b , 1 surface is the end surface of the heat flow meter, the radius is r 1 , 4 is a plane that is flush with the heat flow meter and parallel to 2. Count 4' as a circle equal to 1 on the 4 plane, and 4" is the ring except 4' on the 4 plane. In this embodiment, use r 2 =15mm,L b =370mm, r 1 =9mm as an exampl...

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 method for calibrating a heat flow meter through blackbody radiation. The method includes the steps that the heat flow meter is placed in a blackbody furnace, the radiation heat flow density qb-1 of the position where the heat flow meter is located is calculated, output voltage E of the heat flow meter is measured, and a calibration coefficient alpha is obtained; when the heat flow meter is located in a temperature even area or a temperature uneven area of the blackbody furnace, the radiation heat flow density qb-1 can be obtained according to different calculation formulas. A heat flow sensor is calibrated by the adoption of a blackbody radiation method, the heat flow meter is placed in the blackbody furnace, and compared with a traditional blackbody radiation calibration method, the method has the advantages that not only can the heat flow meter located in the temperature even area of the blackbody furnace be calibrated, but also the heat flow meter located in the temperature uneven area and incapable of being calibrated in a traditional method can also be calibrated.

Description

technical field [0001] The invention relates to the field of heat flow, in particular to a method for calibrating a heat flow meter by black body radiation. Background technique [0002] At present, in the calibration principles of heat flow meters, there are blackbody radiation calibration methods, convective heat transfer calibration methods, and heat conduction calibration methods. Among them, convection heat transfer calibration and heat conduction calibration heat flow meters are more common and used more. [0003] Blackbody radiation calibration requires heating a blackbody cavity to a high temperature, which is difficult, and few people use this calibration method. Theoretically speaking, in a very ideal situation, black body radiation assumes that a uniform temperature black body cavity radiates the heat flow meter placed in it, and the radiation heat flow can be accurately calculated according to the ideal black body radiation heat transfer theory, so that the heat...

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): G01J5/46G01N25/20
Inventor 李龙王新竹孟令瑾范学军
Owner INST OF MECHANICS CHINESE ACAD OF SCI
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