Reducing the mass of the refrigerant in the capillary tube of a propane air-conditioner
Paper
Paper/Presentation Title | Reducing the mass of the refrigerant in the capillary tube of a propane air-conditioner |
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Presentation Type | Paper |
Authors | Tangalajuk Siang, Jeri (Author) and Sharifian, Ahmad (Author) |
Editors | Ngoc Hai, Duong |
Journal or Proceedings Title | Proceedings of the 14th Asian Congress of Fluid Mechanics (14 ACFM) |
Journal Citation | 2, pp. 850-857 |
Number of Pages | 8 |
Year | 2013 |
Place of Publication | Hanoi, Vietnam |
ISBN | 9786049131462 |
Web Address (URL) of Paper | http://www.14acfm.ac.vn/ |
Conference/Event | 14th Asian Congress of Fluid Mechanics (14 ACFM) |
Asian Congress of Fluid Mechanics | |
Event Details | Asian Congress of Fluid Mechanics Rank A A A |
Event Details | 14th Asian Congress of Fluid Mechanics (14 ACFM) Parent Asian Congress of Fluid Mechanics (ACFM) Event Date 15 to end of 19 Oct 2013 Event Location Hanoi, Vietnam |
Abstract | Hydrocarbon refrigerants are environmentally friendly and many countries have started using them in refrigeration and air-conditioner systems. Propane, a typical hydrocarbon, does not damage the ozone layer and its effect on global warming is very small. Use of propane as a refrigerant is gaining favour, especially in systems designed for R-22. The main drawback of using propane as a refrigerant is its flammability. To reduce the risk posed by propane, the total mass of propane in the system should be minimized without degrading the system performance. This work deals with how the mass of propane within a capillary tube can be reduced without compromising the system performance. In the first step, the mass flow rate and inlet and outlet conditions of the refrigerant within the capillary tube of a commercial propane air-conditioner under normal working conditions were measured. In the next step, a parametric MATLAB code was developed to determine the required length and volume of the capillary tube, and the velocity and mass of the propane within the capillary tube. The input parameters of the code are the inside diameter, roughness, shape, mass flow rate, and inlet and outlet conditions. The script was run for sixteen common types of capillary tubes, including the one in our laboratory. According to the results, it is possible to considerably reduce the propane mass within the capillary tube using a small inside diameter helical capillary tube with a decreased coil diameter. However, the results should not be extended to an air-conditioner in which the distance between the outlet of the condenser and the inlet of evaporator is fixed and longer than the calculated length. |
Keywords | charge; mass; capillary tube; propane; air-conditioner; refrigeration |
ANZSRC Field of Research 2020 | 401703. Energy generation, conversion and storage (excl. chemical and electrical) |
401299. Fluid mechanics and thermal engineering not elsewhere classified | |
401706. Numerical modelling and mechanical characterisation | |
Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. |
Byline Affiliations | Computational Engineering and Science Research Centre |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q21wv/reducing-the-mass-of-the-refrigerant-in-the-capillary-tube-of-a-propane-air-conditioner
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