Abstract
Adsorption refrigeration systems are promising, sustainable solutions for many cooling applications. The operating range and the performance of an adsorption cooling cycle are strongly dependent on the properties of adsorbents, adsorbates, and bed coatings. Therefore, further research and analysis may lead to improved performance of adsorption coolers. In this paper, studies on working pairs using natural refrigerants and the properties of adsorbent coatings were reviewed. The selected working pairs were then thermodynamically characterised and ranked in terms of refrigerant evaporation temperature values. This was found to be a key parameter affecting the applicability of a given adsorbent/adsorbate pair and the value of SCP (Specific Cooling Power), COP (Coefficient of Performance) parameters, which are now commonly used comparison criteria of adsorption chillers. In the analysis of the coating studies, the focus was on the effect of individual parameters on the performance of the cooling system and the effect of using coated beds compared to packed beds. It was found that a fundamental problem in comparing the performance of different cooling systems is the use of different operating conditions during the tests. Therefore, the analysis compares the performance of the systems along with the most important thermodynamic cycle parameters for the latest studies.
Highlights
In 2018, the total global electricity consumption was 24,738.9 TWh, of which about2075 TWh was the energy demand for cooling [1]
Many different experimental approaches in the field of adsorption cooling can be observed. This fact makes it difficult to compare the results presented by different authors
It has to be concluded that the knowledge on the applications of different adsorption working pairs and coatings is incomplete
Summary
In 2018, the total global electricity consumption was 24,738.9 TWh, of which about. 2075 TWh was the energy demand for cooling [1]. The use of cooling in buildings has been increasing rapidly for several years [1]. This is due to the increasing standard of living and architectural trends observed in the building industry, as well as the increase in average and maximum temperatures from year to year [2]. Due to the development of healthcare in underdeveloped countries and the need to store many medicines, the demand for refrigeration in the healthcare sector is increasing worldwide
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