Engineering Thermodynamics Volume II: Recent Developments and Applications

A special issue of Applied Sciences (ISSN 2076-3417). This special issue belongs to the section "Energy Science and Technology".

Deadline for manuscript submissions: closed (21 July 2021) | Viewed by 1963

Special Issue Editors


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Guest Editor
Department of Thermal and Fluids Engineering, Carlos III University of Madrid, Madrid, Spain
Interests: concentrated solar power; heat and mass transfer simulation; fluidized beds; fins heat transfer

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Guest Editor
Department of Thermal and Fluids Engineering, Carlos III University of Madrid, Madrid, Spain
Interests: concentrated solar energy; building integrated solar thermal; fluidized beds

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Guest Editor
Department of Thermal and Fluids Engineering, Carlos III University of Madrid, Madrid, Spain
Interests: solar thermal energy; biomass conversion; energy storage; fluidized bed dynamics

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Guest Editor
Department of Thermal and Fluids Engineering, Carlos III University of Madrid, 28013 Madrid, Spain
Interests: thermochemical conversion of biomass; biomass torrefaction; biomass pyrolysis; biomass gasification; biomass combustion; production of bio-fuels; chemical kinetics of biomass conversion; fluidized bed
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Special Issue Information

Dear Colleagues,

The current needs of society include access to reliable and environmentally-friendly sources of energy, comfortable and cost-effective heating and cooling, efficient and pollution free transportation means, low energy consumption domestic appliances, miniaturized electric and electronic devices capable of performing well under extreme temperatures with minimum energy needs, optimized management of thermal processes in the manufacturing and food industries, hybridized and distributed power generation, monitoring and control of combustion and exothermic processes, advanced thermal therapies in medicine and bioengineering, new methods for the assessment and modeling of thermodynamic systems, and sustainable solutions to the energy demand growth, amongst other examples. Engineering thermodynamics plays a foremost role in making possible and improving all these systems through the understanding of the relation of their mechanical and chemical processes to temperature, heat, work, energy in general, and properties of matter.

This Special Issue explores the most recent research and developments in engineering thermodynamics, covering applications in widely extended processes, as well as in new emerging technologies. Novel studies are welcome regarding the fields of energy efficiency and sustainability in buildings, transportation, manufacturing, and process industry; renewable energy; energy, exergy, and economic analysis; energy efficiency enhancement and optimization; thermal power plants; thermal engines; experimental heat and mass transfer; modelling and simulation of thermal processes; heating and refrigeration; ventilation and air conditioning; desalination; thermo-chemical conversion; combustion processes and pollutants mitigation; environmental impact; thermo-physical properties of substances; and teaching innovation in thermodynamics.

Dr. Antonio Acosta-Iborra
Prof. Dr. Carlina Marugán-Cruz
Prof. Dr. Sergio Sánchez Delgado
Prof. Dr. Antonio Soria Verdugo
Guest Editors

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Keywords

  • energy efficiency
  • renewable energy
  • heat and mass transfer
  • heat engines and power generation
  • heating and refrigeration
  • desalination
  • thermo-chemical conversion
  • thermo-physical properties
  • experimental and simulation techniques
  • teaching of thermodynamics

Published Papers (1 paper)

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Research

17 pages, 5704 KiB  
Article
Heat Transfer Correlations for Star-Shaped Fins
by Mladen Bošnjaković, Ante Čikić, Simon Muhič and Mario Holik
Appl. Sci. 2021, 11(13), 5912; https://doi.org/10.3390/app11135912 - 25 Jun 2021
Cited by 7 | Viewed by 1490
Abstract
Star-shaped fins are a newer type of fin for which correlations for heat transfer and pressure drop do not yet exist in the literature. Therefore, correlation equations for air-side heat transfer and pressure drop in a finned heat exchanger with star-shaped stainless-steel fins [...] Read more.
Star-shaped fins are a newer type of fin for which correlations for heat transfer and pressure drop do not yet exist in the literature. Therefore, correlation equations for air-side heat transfer and pressure drop in a finned heat exchanger with star-shaped stainless-steel fins in staggered arrangement were developed in this work. To obtain these correlations, a numerical analysis of the basic heat exchanger geometry and another 21 variants of heat exchanger geometry was performed using computational fluid dynamics, and then the results of laboratory tests of a model of heat exchangers with star-shaped fins were used. In the numerical analysis, the fin pitch, the fin thickness, and the air velocity at the inlet to the heat exchanger were varied. The Nusselt (Nu) and Euler (Eu) numbers were determined for each variation analyzed. Initial correlations for Nu and Eu were derived using the least-squares deviation method. The correlation coefficients thus obtained were adjusted to agree with the results of the laboratory tests. The deviation of the final obtained correlation for Nu from the experimental test results was up to 10% in the range of Re < 3500, whereas for higher values of Re, the deviation was less than 2%. The Eu correlation deviated from experimental results up to 19% in the range of Re < 4000, whereas in the range of Re > 5600, the deviation was less than 1%. The correlations were valid in the range 2000 < Re < 16,000. Full article
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