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Water
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Laminar and Turbulent Flow: Heat and Mass Transfer
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Laminar and Turbulent Flow: Heat and Mass Transfer

A special issue of Water (ISSN 2073-4441). This special issue belongs to the section "Hydraulics and Hydrodynamics".

Deadline for manuscript submissions: closed (31 May 2023) | Viewed by 1692

Special Issue Editor

Prof. Dr. Juan I. Córcoles-Tendero

E-Mail Website
Guest Editor
Renewable Energy Research Institute, Industrial Engineering School, Castilla – La Mancha University, Campus Universitario s/n, 02071 Albacete, Spain
Interests: heat exchangers; computational fluid dynamics; fluidized beds; rheometer; non-Newtonian fluids
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

In the current context, it is important to develop tools which are useful to improve water and energy resources in industrial processes. In those cases, it is necessary to study new designs or to analyze the performance of existing devices, because they are related to the power requirements for the pumping and sizing of pipes during processing. Several tools can be used, based on theoretical equations, experimental research, or numerical simulations using computers. These tools, combined with the use of equipment to measure the properties of fluids to analyze their influence on the heat transfer process, are of great importance to the understanding of fluid flow. This is especially interesting for heat exchanger manufacturers, to optimize the design parameters. To better understand the heat transfer mechanism, it is interesting to carry out studies focused on the hydrodynamics behavior of the fluid.  The aim of this Special Issue is to present the state of the art and applications related to the use of theoretical, experimental, or computational fluid dynamics (CFD) tools related to heat transfer processes. The Special Issue invites advanced research carried out in heat transfer processes, which help to explain the heat transfer mechanism in engineering applications.

Prof. Dr. Juan I. Córcoles-Tendero
Guest Editor

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. Water is an international peer-reviewed open access semimonthly 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 2600 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

  • computational fluid dynamics
  • heat exchangers
  • hydrodynamics
  • thermal processing
  • non-Newtonian fluids
  • experimental research

Published Papers (1 paper)

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Research

25 pages, 25826 KiB  
Article
Numerical Evaluation of the Hydrothermal Process in a Water-Surrounded Heater of Natural Gas Pressure Reduction Plants
by Hamid Kazemi Moghadam, Seyed Soheil Mousavi Ajarostaghi, Mohsen Saffari Pour and Mohsen Akbary
Water 2023, 15(8), 1469; https://doi.org/10.3390/w15081469 - 09 Apr 2023
Cited by 1 | Viewed by 1375
Abstract
The gas pressure in the main network of transmission lines is about 700 to 1000 psi (4826.33 to 6894.76 kPa), which is reduced to 250 psi (1723.69 kPa) at the entrance station of a city. This reduction process, which occurs in the regulator, [...] Read more.
The gas pressure in the main network of transmission lines is about 700 to 1000 psi (4826.33 to 6894.76 kPa), which is reduced to 250 psi (1723.69 kPa) at the entrance station of a city. This reduction process, which occurs in the regulator, causes a severe drop in gas temperature. The drop in the gas temperature produces hydrates and even causes the water vapor in the gas to freeze. As a result, there is a possibility that the passage of gas in the regulator is blocked and the gas flow is cut off. By employing heaters (indirect water heaters), the temperature of the gas entering the regulator can be preheated to eliminate the possibility of freezing in the regulator. This heater is fueled with natural gas and it operates for 24 hr a day, especially in the cold seasons. Therefore, one of the main challenges in using this type of heater is its high fuel consumption. Consequently, researchers are looking for a solution to reduce the fuel consumption (natural gas) of gas heaters. In this paper, the heat transfer and fluid flow in a heater of a natural gas pressure reduction plant, the Aliabad Power Plant (Iran), are numerically investigated using a commercial Computational Fluid Dynamics (CFD) code, ANSYS FLUENT 18.2. The considered heater consists of three parts, including (i) gas coils, (ii) a water bath (shell), and (iii) a fire tube. The indirect heat transfer process takes place between the hot liquid flow in the fire tube (combustion exhaust) and the cold liquid flow (natural gas) using the natural convection flows generated in the water bath. Numeric modeling is performed for four different gas mass flows, including 6 × 104, 8 × 104, 1 × 105, and 12 × 105 standard cubic meters per hour (or 16.67, 22.22, 27.78, and 33.33 m3/s). The results indicate that the natural gas outlet temperature achieved to a temperature higher than required. By installing a regulator on the burner, the gas consumption can be reduced, resulting in station cost savings, and also reducing the environmental impacts. The outcomes depict that the maximum possible reductions in monthly gas consumption and economic savings in the proposed system are 67,500 m3 and IRR 25 million at a gas mass flow rate of 60,000 SCMH. Full article
(This article belongs to the Special Issue Laminar and Turbulent Flow: Heat and Mass Transfer)
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