Thermodynamic Analysis of a Half-Effect Absorption Cooling System Powered by a Low-Enthalpy Geothermal Source
, Efraín Gómez-Arias 4,*, Ulises Dehesa-Carrasco 5, Orlando Miguel Espinoza-Ojeda 6 and Sanal Kozhiparambil Chandran 1Round 1
Reviewer 1 Report
Although representing a simple thermodynamic analysis, the paper is very well organized and written. The discussion is insightful and all the outcomes are clearly supported by the data.
Two minor remarks:
1) I suggest to use a nomenclature section in order to provide easy readable equations;
2) The Sieder and Tate-single phase heat transfer correlation for laminar flow has been used in the heat transfer model for the ground water. Have the authors checked whether the flow is always laminar? In case of turbulence, I would suggest the Dittus-Boelter correlation, that is universally recognized to work very well in pipes.
Author Response
Response to Reviewer 1
Comments
Dear Reviewer
Thank you very much for your comments and observations in order to improve de quality of the paper.
Although representing a simple thermodynamic analysis, the paper is very well organized and written. The discussion is insightful and all the outcomes are clearly supported by the data.
Two minor remarks:
Point 1: I suggest to use a nomenclature section in order to provide easy readable equations.
Response 1: Dear Reviewer, taking into account your comment, the nomenclature section was added to the manuscript.
Point 1: The Sieder and Tate-single phase heat transfer correlation for laminar flow has been used in the heat transfer model for the groundwater. Have the authors checked whether the flow is always laminar? In case of turbulence, I would suggest the Dittus-Boelter correlation that is universally recognized to work very well in pipes.
Response 2: Dear Reviewer, taking into account your comment, we reviewed the behavior of the internal flow of the U-tube heat exchanger as a function of the Reynolds and Nusselt numbers, and we verified that effectively the flow was turbulent. Therefore, we modified the thermal models. The new models were made using the Dittus and Boelter correlation as you suggested.
Author Response File: 
Author Response.pdf
Reviewer 2 Report
The paper is well done. Some improvements are required in Introduction.
In particular:
- page 2: several statements have to be referenced
- page 2: the description of the operation of the single-effect (row 64) and the half-effect (row 79) absorption cooling systems are kown. Perhaps a generic description is sufficient.
Author Response
Response to Reviewer 2
Comments
Dear Reviewer
Thank you very much for your comments and observations in order to improve de quality of the paper.
The paper is well done. Some improvements are required in Introduction.
In particular:
Point 1: Page 2: several statements have to be referenced.
Response 1: Dear Reviewer, taking into account your comment, six new references were added to the manuscript (1-4, 8 and 9).
Point 2: Page 2: the description of the operation of the single-effect (row 64) and the half-effect (row 79) absorption cooling systems are known. Perhaps a generic description is sufficient.
Response 2: Dear Reviewer, according to your suggestion, the descriptions of the half and
single-effect systems were summarized.
Author Response File: Author Response.pdf
