Research and Development in Heat and Mass Transfer and Refrigeration Systems

A special issue of Processes (ISSN 2227-9717). This special issue belongs to the section "Energy Systems".

Deadline for manuscript submissions: 15 December 2024 | Viewed by 3362

Special Issue Editors


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Guest Editor
Federal Institute of Pernambuco-IFPE, Recife, Brazil
Interests: heat and mass transfer processes; cogeneration and trigeneration-energy polygeneration; absorption and mechanical compression refrigeration; energy, exergy and financial analysis of energy systems; application of machine learning of energy engineering; renewables energy
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Guest Editor
DACS, DACT, CACSEM, CACTR, IFPE-Federal Institute of Education, Science, and Technology of Pernambuco, Campus Recife, Recife, Brazil
Interests: refrigeration; HVAC; wind turbine; anomaly detection; reliability; vibration; artificial intelligence

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Guest Editor
DACS, DACT, CACSEM, CACTM, IFPE-Federal Institute of Education, Science, and Technology of Pernambuco, Campus Recife, Recife, Brazil
Interests: heat and mass transfer; CFD simulations; polygeneration; numerical simulation; solar and wind energies; vibration

Special Issue Information

Dear Colleagues,

Refrigeration systems and heat pumps represent essential technologies for countries' social and economic development. In this context, these systems can be divided into three major groups on the basis of the kind of refrigeration cocnerned: vapor compression refrigeration, absorption refrigeration, and adsorption refrigeration. Significant advances in the state of the art have been developed in the search for energy, financial and environmental improvements. Recently, there has been a series of works searching for new refrigerant fluids in the chaos of refrigeration systems by mechanical compression due to the environmental limitations of contemporary refrigeration modalities, making efforts to develop natural fluids. In the case of absorption and adsorption refrigeration systems, the search for new mixtures of works and combinations of components can help with the sources of activation of this equipment system, makin them more efficient and attractive from financial and environmental points of view. These pieces of equipment represent the main components in polygeneration plants and have been developed to meet cold and heat demands, such as those of air conditioning process, local heating, temperature, and humidity control in data centers and industries, among others, an objective which has been a constant concern among researchers around the world. Another important aspect related to this equipment is linked to the use of sustainable inputs, such as photovoltaic/thermal solar energy, biofuel energy, and wind energy, intending to seek inputs that do not harm the environment and improve the energy efficiency of industrial and residential refrigeration and air conditioning systems.

This Special Issue, entitled “Research and Development in Heat and Mass Transfer and Refrigeration Systems,” invites high-quality studies which focus on the latest technological advances in refrigeration systems, the optimization of refrigeration components, and sustainable applications. Topics include, but are not limited to:

  • Heat and mass transfer studies in condensers, generators, evaporators, and absorbers;
  • Control system for vapor compression systems;
  • Innovative compressor technologies Photovoltaic/thermal solar cooling applications;
  • Properties of new refrigerants, working mixtures for absorption refrigeration systems;
  • Energy, exergetic, and exergoeconomic analyses directed to refrigeration systems integrated into polygeneration plants;
  • Development of new concepts for refrigeration systems; development and optimization of heat exchangers.

Prof. Dr. Alvaro Antonio Ochoa Villa
Dr. Gustavo De Novaes Pires Leite
Dr. José Ângelo Peixoto Da Costa
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Processes is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2400 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • mechanical refrigeration systems
  • sorption refrigeration systems
  • working fluids
  • advanced technology of refrigeration
  • heat exchangers
  • solar refrigeration
  • heat and mass transfer
  • control strategies
  • thermoeconomic analysis
  • environmental impacts

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Published Papers (2 papers)

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Research

17 pages, 3618 KiB  
Article
Design, Construction, and Characterization of a Solar Photovoltaic Hybrid Heat Exchanger Prototype
by Sandro Guadalupe Perez Grajales, Angel Horacio Hernández, David Juárez-Romero, Guadalupe Lopez Lopez and Gustavo Urquiza-Beltran
Processes 2024, 12(3), 588; https://doi.org/10.3390/pr12030588 - 14 Mar 2024
Viewed by 1213
Abstract
In this experimental work, a prototype of a hybrid solar–thermal–photovoltaic (HE-PV/T) heat exchanger has been designed, built, and characterized, with rectangular geometry and 12 fins inside, to obtain better heat flow and higher performance in order to achieve a better heat transfer coefficient, [...] Read more.
In this experimental work, a prototype of a hybrid solar–thermal–photovoltaic (HE-PV/T) heat exchanger has been designed, built, and characterized, with rectangular geometry and 12 fins inside, to obtain better heat flow and higher performance in order to achieve a better heat transfer coefficient, reducing and optimizing the working area. The heat exchanger contains 12 photovoltaic cells connected in series, with an angle of inclination of approximately 18° towards the south and a surface area of 0.22 m2, smaller than those available on the market, which individually capture 147.05 W/m2 as a photovoltaic panel and 240 W/m2 as a solar collector. Mathematical models found in the literature from previous work were used for the electrical and thermal evaluations. The temperature of the PV cells was reduced to 13.2 °C and the thermal level of the water was raised to a temperature above 70 °C, with a photovoltaic–thermal coupling power of 307.11 W and a heat transfer coefficient of 5790 W/m2 °C. The efficiencies obtained were as follows: thermal up to 0.78 and electrical up to 0.095. The novelty of these results was achieved in a reduced space of 40% less than those reported and available on the market. Full article
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27 pages, 6579 KiB  
Article
Experimental and Computational Fluid Dynamic—CFD Analysis Simulation of Heat Transfer Using Graphene Nanoplatelets GNP/Water in the Double Tube Heat Exchanger
by Carlos C. X. S. Lima, Alvaro A. V. Ochoa, José A. P. da Costa, Frederico D. de Menezes, João V. P. Alves, Julia M. G. A. Ferreira, Clara C. A. Azevedo, Paula S. A. Michima and Gustavo N. P. Leite
Processes 2023, 11(9), 2735; https://doi.org/10.3390/pr11092735 - 13 Sep 2023
Cited by 5 | Viewed by 1568
Abstract
This study investigates and compares the experimental heat transfer performance and simulation via computational fluid dynamics (CFD) of graphene nanoplatelets (GNP) and water nanofluids GNP/water in the double-tube-type heat exchanger (DTHE). Tests were conducted with water/water and GNP/water fluids, with the nanofluid for [...] Read more.
This study investigates and compares the experimental heat transfer performance and simulation via computational fluid dynamics (CFD) of graphene nanoplatelets (GNP) and water nanofluids GNP/water in the double-tube-type heat exchanger (DTHE). Tests were conducted with water/water and GNP/water fluids, with the nanofluid for the hot-fluid circuit and water for the cold-fluid circuit, with counterflow direction, varying the nanofluid concentrations by weight (wt%) at 0.0125%, 0.025%, and 0.050%, the operating temperature at 50 and 60 °C, and Reynolds numbers between 2000–6000. The results showed that 0.025 wt% GNP presented better thermal performance, with a 28% increase in the temperature gain. The 0.025 wt% GNP had slightly better performance for the Nusselt number (Nu), and the 0.05 wt% GNP had a slightly better thermal effectiveness. The comparison between the experimental values showed good agreement with those calculated by empirical correlations and the CFD model, with maximum and minimum relative error values of 9% and 1%, respectively, when the Petukhov equation was used. Full article
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