Integrated Approach for Detecting Convection Effects in Geothermal Environments Based on TIR Camera Measurements

Round 1

Reviewer 1 Report

Thermal characterization of soils is one of most important of physical properties on geotechnical system. This paper focusses on thermal conductivity using conventional devise, and proves the analysis results. It is effective to solve geotechnical environmental problems. Prepared references are so fine that indicated science fields are widely, and readers for this journal paper take good knowledge. In Section 1 Introduction, authors verify many information with details considerations, and many references are added into some sentences effectively.

 

 

 

Section 1 Introduction

It is understand that thermal conductivity is necessary to evaluation soil properties and remaining safety in geotechnical environment. Please would you like to indicate practice problems related to essential thermal conductivity of soil.

 

Figure 1

It seem that the material used in this empirical works absolutely dry sand ? The dry sand is easy to conducted out heating test. Selection of test material is important to reflect to conclusions, and applying to practice. Why authors select dry sand ???

 

 

Figure 6

Processing of calculation thermal conductivity include some parameters and boundary condition, that how to determine the boundary condition for borehole container as shown in Fig. 6.

 

 

Figure 7

Absolutely error developed with temperature that it is most interesting for measuring and evaluation thermal conductivity. It is common that some errors and variations on obtained test results. As Journal paper, authors should be applying the understanding to readers.

 

Conclusions

It is sure to approach to good advantage for research subjections that reviewer require to establish sensitivity on value number for the advantage conclusions.

Line 33

Please would you like to mention more matters regard to critical solutions.

 

Author Response

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Author Response File: Author Response.docx

Reviewer 2 Report

• It is necessary to express the process of the experiment performed in this study in pictures(positions of sensors, IR camera, etc.).

• Consider also a method of having an external heat source assumed to be sunlight from the sun in the upward direction of the ground to calculate the thermal conductivity due to radiation(eg. Halogen lamp).

• In this study, the temperature of the ground was measured using an infrared camera. I think that the point of using only an infrared camera is that it is far from the infrared thermography suggested in the title. If it is difficult to correct the title, I think that proper data processing for the thermography is necessary.

• In the graph of Figure. 7, it can be seen that the largest absolute error occurs at 16 ~ 18 degrees. An explanation is needed for this reason.
• In the title of 4.2, ‘aplication’ needs to be modified.

Author Response

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Author Response File: Author Response.docx

Round 2

Reviewer 2 Report

The author has sincerely responded to comments and suggestions, and has completed appropriate corrections.