| Issue |
E3S Web Conf.
Volume 286, 2021
10th International Conference on Thermal Equipments, Renewable Energy and Rural Development (TE-RE-RD 2021)
|
|
|---|---|---|
| Article Number | 01012 | |
| Number of page(s) | 13 | |
| Section | Thermal Equipments and Processes | |
| DOI | https://doi.org/10.1051/e3sconf/202128601012 | |
| Published online | 12 July 2021 | |
Review regarding defrosting methods for refrigeration and heat pump systems
1 Dept. of Applied Thermodynamics, Engines, Thermal and Refrigeration Equipment, University POLITEHNICA of Bucharest, Romania
2 University of BABYLON, Iraq
3 University of TECHNOLOGY, Iraq
* Corresponding author: horatiu.pop@upb.ro
The paper presents a literature review regarding defrosting methods for household refrigeration and heat pumps. The literature review covers the period between 2008 and 2020. A number of 61 papers have been studied. The literature review was conducted by dividing the defrost methods into passive and active. Passive methods involve surface coating and off-cycle. The active defrost methods involve reverse cycle, ultrasonic vibration, hot–gas defrost, electric heating and hot fluid. Surface coating and ultrasonic vibration are recent defrost methods proposed in the literature. Also, recently, phase change materials have been used in household refrigerators to improve their efficiency. This is a topic that needs further investigation and is a subject of interest as it can lead to lower energy consumption during defrost cycles. From the present study, the research direction regarding the use of PCMs in defrost cycles can be highlighted.
Key words: defrost / PCM / refrigeration systems / heat pumps
© The Authors, published by EDP Sciences, 2021
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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