IR Reflection mechanism inside the annulus between two concentric cylindrical tubes

TL;DR

This paper presents a mathematical model and experimental validation for IR reflection inside the annulus between two concentric cylindrical tubes with a reflective coating, demonstrating close agreement between simulation and experiments.

Contribution

The paper introduces a new mathematical model and simulation code for IR reflection in concentric cylinders, validated by experiments showing high correlation.

Findings

Model and simulation closely match experimental results

Simulation slightly underestimates IR reflection performance

High statistical agreement with p-values between 0.995 and 0.80

Abstract

A mathematical model was derived to calculate the IR reflection inside the annulus between two concentric cylindrical tubes, where the inner side of the outer cylinder is assumed to be coated with an IR reflected mirror. The mathematical model is implemented in a simulation code and experimentally validated. The experimental results of a system of two concentric cylindrical tubes operating with an IR reflected mirror on the inside of the outer cylinder are presented, and the results between the model and the simulation are compared. It is seen that the correspondence is encouragingly close (Chi-squared test p-values between 0.995 and 0.80), where the simulation underestimates the experimental performance.