Absorption cooling systems – Review of various techniques for energy performance enhancement

Nikbakhti, Rasoul; Wang, Xiaolin; Hussein, Ahmed Kadhim; Iranmanesh, Aghil

doi:10.1016/j.aej.2020.01.036

Cited by 159 publications

(48 citation statements)

References 151 publications

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“…• having pumps as the only system components with moving parts result in lower maintenance cost than vapour compression systems with fast moving parts, such as the compressor. The less frequent operation interruption also results in longer system life expectancy [94];…”

Section: Advantagesmentioning

confidence: 99%

Absorption heat transformer - state-of-the-art of industrial applications

Cudok

Giannetti

Ciganda

et al. 2021

Renewable and Sustainable Energy Reviews

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The use of waste heat or low-exergy heat sources represents a strategic opportunity to reduce the environmental footprint and operation cost of industrial processes. The absorption heat transformer, also known as absorption heat pump type II, is a thermal machine which can boost the temperature of a heat flow by using a negligible amount of electrical power.However, owing to the lack of established technical knowledge and the absence of comprehensive recordings of successful heat transformer applications, the feasibility and reliability of absorption heat transformers have been questioned and the diffusion of this technology remained limited.Therefore, in this paper, all the industrial applications of the absorption heat transformer that are recorded in previous literature and yet unpublished reports are presented and discussed.In addition to literature research, intense knowledge exchange with three leading manufacturers of absorption heat transformers gave an accurate perspective on the technological level of commercial products and operative installations. It is shown that between 1981 and 2019, 48 absorption heat transformers have been installed in 42 plants with a total capacity of ≈ 134 MW. Two main implementation periods, separated by 25 years of infrequent heat transformer installations, have been recognised. More than 74 % of the installations were in Asia. Approximately 61 % of the heat transformer installations were applied into the chemical industry.Therefore, through the analysis of the technical challenges and their solutions, along with related economical aspects of heat transformer installations, the effective state-of-the-art of 1

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Section: Advantagesmentioning

confidence: 99%

Absorption heat transformer - state-of-the-art of industrial applications

Cudok

Giannetti

Ciganda

et al. 2021

Renewable and Sustainable Energy Reviews

View full text Add to dashboard Cite

show abstract

“…The evaporator then extracts heat from the liquid refrigerant, the gaseous refrigerant is absorbed again by the liquid absorbent and the cycle starts again. [39,61]. Absorption refrigeration might require an additional device called a rectifier to purify the refrigerant vapour when the boiling points of the refrigerant/absorbate and the absorbent are close.…”

Section: Working Principlementioning

confidence: 99%

“…They are more technically mature than adsorption cooling systems [65]. However, they have a high upfront cost, are usually bulky and have a low COP, of up to 1.1 [61].…”

Section: Working Principlementioning

confidence: 99%

“…Regarding absorption, the most widely used and efficient working pairs -NH3/H2O and H2O/LiBrare based on volatile solutions and require a vapour purification process to ensure the quality of the refrigerant [79]. Alternatives, showing potential even though requiring further investigations, have emerged, with ternary and quaternary salt mixtures as refrigerants [61]. For instance, LiNO3 or NaSCN show potential in replacing water in the ammonia (NH3)/water (H2O) pair with a 10% higher COP.…”

Section: Research Challengesmentioning

confidence: 99%

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The status of refrigeration techniques for vaccine storage and transportation in low-income settings

Cattin¹,

Jonnalagedda²,

Makoliso³

et al. 2020

Preprint

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Vaccines need to be continuously stored between 2°C to 8°C, from their production to administration to beneficiaries. Every year, more than 25% of vaccines are wasted. One of the main reasons for this wastage is the lack of cold chain continuity in low-income settings, where electricity is scarce. Recently, several advances have been made in cooling technologies to store and transport vaccines. The current paper presents a review of refrigeration technologies based on scientific publications, industry white papers and other grey literature. For each refrigeration method, we describe its working principle, the best performing devices available as well as the remaining research challenges in order to obtain a very high degree of performance enhancement. Finally, we comment on their applicability for vaccine transport and storage.

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“…Even though absorption technology has lower COP than commercial refrigeration technology, it is more durable with a longer lifetime of 20-30 years [19]. Vapor absorption refrigeration (VAR) is proven to be an environmentally friendly replacement for commercial refrigeration.…”

Section: Introductionmentioning

confidence: 99%

Design and Performance of Solar PV Integrated Domestic Vapor Absorption Refrigeration System

Selvaraj

Kirubakaran

2021

International Journal of Photoenergy

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The arrival of new technologies has increased the energy demand day by day and does not seem to slow down at any time soon. High energy demand is adding risk on energy depletion and cause of various environmental issues. Air conditioner, chiller, and refrigerator occupy a considerable amount of the world’s total energy usage and have also proved to be a massive contributor to various environmental impacts. This technology might sound like a luxury on the surface, but they are in high demand to achieve food security. They can also help lifesaving vaccines to reach even the isolated parts of the world. Even though solar thermal refrigeration is a popular field, this paper solely concentrates on PV integrated refrigeration. In this paper, a renewable integration technology where a solar photovoltaic system is used to supply the electrical energy required to drive an absorption cycle is studied and compared with the commercial AC absorption refrigeration system. The Coefficient of Performance (COP) of the AC and DC system was 0.18 and 0.14. The simple payback of the system is 10.2 years.

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Absorption cooling systems – Review of various techniques for energy performance enhancement

Cited by 159 publications

References 151 publications

Absorption heat transformer - state-of-the-art of industrial applications

Absorption heat transformer - state-of-the-art of industrial applications

The status of refrigeration techniques for vaccine storage and transportation in low-income settings

Design and Performance of Solar PV Integrated Domestic Vapor Absorption Refrigeration System

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