Towards a Greener Tomorrow—Modern Trends in Cooling and Water Solutions

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31 January 2025

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30 April 2025

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Topic Information

Dear Colleagues,

Increasing energy efficiency, reducing energy demand and greenhouse gas emissions, and using waste and renewable and recycled heat from low-temperature sources are significant goals today captured in the concept of 4th Generation District Heating (4GDH). On the other hand, around 1 billion people worldwide suffer from water scarcity, and a further 3 billion are approaching the same fate. Only 2.5% of the total water is freshwater, of which around 70% is unavailable. Only 0.4% constitutes the most valuable part of freshwater, and low-grade waste heat recovery using heat pumps is one of the most effective ways of cooling and freshwater production from renewable and waste heat of the near ambient temperature, including sewage water, solar heat, and underground resources. This Topic aims to bring together research on advances in modelling, optimization, and simulations and the design and performance of cooling and water production systems. Original research articles, reviews and communications articles are welcomed.

Prof. Dr. Jaroslaw Krzywanski
Dr. Marcin Sosnowski
Dr. Karol Sztekler
Dr. Anna Pajdak
Dr. Anna Zylka
Dr. Anna Kulakowska
Dr. Karolina Grabowska
Dr. Dorian Skrobek
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Participating Journals

Journal Name	Impact Factor	CiteScore	Launched Year	First Decision (median)	APC
Energies energies	3.2	5.5	2008	16.1 Days	CHF 2600	Submit
Processes processes	3.5	4.7	2013	13.7 Days	CHF 2400	Submit
Water water	3.4	5.5	2009	16.5 Days	CHF 2600	Submit
Sustainability sustainability	3.9	5.8	2009	18.8 Days	CHF 2400	Submit
Buildings buildings	3.8	3.1	2011	14.6 Days	CHF 2600	Submit

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Published Papers (3 papers)

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All Energies Processes Water Sustainability Buildings

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15 pages, 2085 KiB  

Open AccessArticle

Implementation of Fluidized Bed Concept to Improve Heat Transfer in Ecological Adsorption Cooling and Desalination Systems

by Karolina Grabowska, Jaroslaw Krzywanski, Anna Zylka, Anna Kulakowska, Dorian Skrobek, Marcin Sosnowski, Radomir Ščurek, Wojciech Nowak and Tomasz Czakiert

Energies 2024, 17(2), 379; https://doi.org/10.3390/en17020379 - 12 Jan 2024

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Abstract

Sustainable development policy focuses on reducing the carbon footprint generated by the global industry and energy sector. Replacing conventional energy sources with environmentally friendly ones requires advanced research to increase energy efficiency and reduce the instability and intermittence of renewable sources. Moreover, adsorption [...] Read more.

Sustainable development policy focuses on reducing the carbon footprint generated by the global industry and energy sector. Replacing conventional energy sources with environmentally friendly ones requires advanced research to increase energy efficiency and reduce the instability and intermittence of renewable sources. Moreover, adsorption chillers are an opportunity to introduce net-zero emission technologies to the refrigeration, air-conditioning, and desalination industries. Adsorption devices could be popularized if a method of effective heat transfer in the volume of the adsorption bed is developed. The innovative concept of introducing fluidized beds into the adsorption system can achieve the most promising results in improving energy efficiency. To confirm the adopted assumption, heat transfer coefficient calculations for the packed and fluidized bed were carried out in this paper based on experimental tests and literature data. The empirical research aims to extend the fundamental knowledge in the implementation of fluidization under low-pressure conditions, characteristic of the adsorption systems’ working cycle. Experiments were conducted on a unique test stand equipped with the Intensified Heat Transfer Adsorption Bed (IHTAB) reactor prototype. Five adsorption bed samples were analyzed. The reference sample consisted only of silica gel, and the subsequent ones contained aluminum or carbon nanotubes with 5 and 10% additions. In the case of samples with admixtures, the fluidized state increased the heat transfer coefficient on average from approx. 36.9 W/m² K to approx. 245.4 W/m² K. Full article

(This article belongs to the Topic Towards a Greener Tomorrow—Modern Trends in Cooling and Water Solutions)

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14 pages, 2084 KiB  

Open AccessArticle

Technological Assessment on Steam Reforming Process of Crude Glycerol to Produce Hydrogen in an Integrated Waste Cooking-Oil-Based Biodiesel Production Scenario

by Vishal Naranje, R. Swarnalatha, Ojas Batra and Sachin Salunkhe

Processes 2022, 10(12), 2670; https://doi.org/10.3390/pr10122670 - 12 Dec 2022

Cited by 2 | Viewed by 2348

Abstract

The current scenario of society is to produce fuel from renewable energy resources. The purpose of this research work is to develop an integrated approach for glycerol valorization and biodiesel production. Employing a range of methodologies widely used in the industry, technical analysis [...] Read more.

The current scenario of society is to produce fuel from renewable energy resources. The purpose of this research work is to develop an integrated approach for glycerol valorization and biodiesel production. Employing a range of methodologies widely used in the industry, technical analysis and assessments of the process’s applicability in real-world situations are also made. The integrated process plant is simulated using Aspen Plus^®. Several different sensitivity analyses are carried out to describe the process that improves efficiency and are designed to maximize hydrogen recovery from the reforming section. The integrated process results are compared with several existing standalone biodiesel production processes. Additionally, the results are verified with the theoretical studies on glycerol valorization. The outcomes of the process plant simulation reveal coherent results with the current industrial standards for the two processes. The results show that the amount of glycerol produced (stream 7) is 60.72 kmol/h in mass flow rate, this translates to 7272.74 kg/h. The hydrogen produced is 488.76 kmol/h and, in mass flow rate, this translates to 985.3 kg/h. The total yield of hydrogen produced is around 13%. The biodiesel yield is at 92.5%. It shows a realistic recovery that would be attained if the process is implemented, contrary to theoretical studies. Full article

(This article belongs to the Topic Towards a Greener Tomorrow—Modern Trends in Cooling and Water Solutions)

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26 pages, 12861 KiB  

Open AccessEditor’s ChoiceArticle

Possibilities of Integrating Adsorption Chiller with Solar Collectors for Polish Climate Zone

by Tomasz Bujok, Marcin Sowa, Piotr Boruta, Łukasz Mika, Karol Sztekler and Patryk Robert Chaja

Energies 2022, 15(17), 6233; https://doi.org/10.3390/en15176233 - 26 Aug 2022

Cited by 2 | Viewed by 1564

Abstract

Solar-powered adsorption chillers are a particularly interesting alternative to energy-intensive conventional refrigeration systems. Integration of the adsorption chiller with solar collectors is a very promising concept since the increase in solar radiation coincides with the increased demand for cooling. Such a solution is [...] Read more.

Solar-powered adsorption chillers are a particularly interesting alternative to energy-intensive conventional refrigeration systems. Integration of the adsorption chiller with solar collectors is a very promising concept since the increase in solar radiation coincides with the increased demand for cooling. Such a solution is very economical and environmentally friendly. It also fits in with current trends related to energy policy and sustainable development. The article presents the results of tests conducted for a two-bed adsorption chiller integrated with solar collectors. The tests were performed on selected days of the summer period (July and August) at the KEZO Research Centre PAS in Jablonna (Poland). Based on the results obtained, the performance parameters of the adsorption chiller were determined, and the problems associated with the integration of all components of the system were identified and discussed. The values of the determined Coefficient of Performance (COP) and cooling capacity for the tested adsorption chiller are, depending on the day on which the tests were conducted, from 0.531 to 0.692 and from 5.16 kW to 8.71 kW, respectively. Analysis of the test results made it possible to formulate conclusions related to the design of integrated systems of adsorption chillers with solar collectors. Full article

(This article belongs to the Topic Towards a Greener Tomorrow—Modern Trends in Cooling and Water Solutions)

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