Role of Non-Adiabatic Capillary Tube in Water Cooler Performance-Reference-Cited by-同舟云学术

Role of Non-Adiabatic Capillary Tube in Water Cooler Performance

Published:2023-01-26 Issue:3 Volume:16 Page:1322
ISSN:1996-1073
Container-title:Energies
language:en
Short-container-title:Energies

Author:

Di Donato Lea¹^ORCID,Mugnini Alice¹,Polonara Fabio¹²^ORCID,Arteconi Alessia¹³^ORCID

Affiliation:

1. Dipartimento di Ingegneria Industriale e Scienze Matematiche, Università Politecnica delle Marche, Via Brecce Bianche 1, 60131 Ancona, Italy

2. Consiglio Nazionale delle Ricerche (CNR): Construction Technologies Institute, Viale Lombardia 49, 20098 San Giuliano Milanese, Italy

3. Department of Mechanical Engineering, KU Leuven, B3000 Leuven, Belgium

Abstract

In this paper, a numerical model of a capillary tube is developed. The considered expansion device is placed against the suction line at the inlet of the compressor. Wrapping the capillary tube around the suction line allows heat to be recovered by superheating the refrigerant leaving the evaporator. This increases the degree to which the fluid is superheated, preventing liquid droplets from entering the compressor and causing damage. The open-source software PYTHON is used for modelling the non adiabatic capillary tube, and the results are validated by comparing them with experimental tests. This study demonstrates that an accurate contact of the capillary tube with the suction line affects the superheating of the compressor inlet fluid by increasing its temperature by up to 5 degrees and produces an increase in COP of 3–4%. On the other hand, the length of the capillary tube affects the flow rate of the refrigerant circulating in the cycle; in particular, it is noted that a 300% increase in the capillary tube length leads to a decrease in the refrigerant flow rate of up to 50–60%.

Publisher

MDPI AG

Subject

Energy (miscellaneous),Energy Engineering and Power Technology,Renewable Energy, Sustainability and the Environment,Electrical and Electronic Engineering,Control and Optimization,Engineering (miscellaneous),Building and Construction

Link

https://www.mdpi.com/1996-1073/16/3/1322/pdf

Reference19 articles.

1. (2022, November 30). World Meteorogical Organization. Available online: https://public.wmo.int/en/media/press-release/2021-one-of-seven-warmest-years-record-wmo-consolidated-data-shows.

2. IEA (2022, November 30). Cooling Emissions and Policy Synthesis Report. Paris. License: CC BY 4.0. 2020, Available online: https://www.iea.org/reports/cooling-emissions-and-policy-synthesis-report.

3. Flow of refrigerants through capillary tubes: A state-of-the-art;Dubba;Exp. Therm. Fluid Sci.,2017

4. Flow characteristics of refrigerants flowing through capillary tubes—A review;Khan;Appl. Therm. Eng.,2009

5. Mendonca, K.C., Melo, C., Ferreira, R.T.S., and Pereira, R.H. (1998, January 14–17). Experimental Study on Lateral Capillary Tube-Suction Line Heat Exchangers. Proceedings of the International Refrigeration and Air Conditioning Conference, West Lafayette, IN, USA. Available online: http://docs.lib.purdue.edu/iracc/450.