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Urban/District Thermal Energy System

A special issue of Energies (ISSN 1996-1073). This special issue belongs to the section "J: Thermal Management".

Deadline for manuscript submissions: closed (30 September 2022) | Viewed by 6892
Submit your paper and select the Journal “Energies” and the Special Issue “Urban/District Thermal Energy System” via: https://susy.mdpi.com/user/manuscripts/upload?journal=energies. Please contact the guest editor or the journal editor ([email protected]) for any queries.

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Guest Editor
Centre for Energy Technology, School of Mechanical Engineering, The University of Adelaide, Adelaide, SA 5005, Australia
Interests: renewable energy; thermal energy storage; phase change material; solar energy; chemical storage; chemical looping process; hybrid solar systems; carbon capture and storage; mineral processing
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

The Guest Editor is inviting submissions to a Special Issue of Energies on the subject area of “Thermal Energy Storage and Carbon Capture”. In today’s world, environmental problems and the energy crisis are two major global issues that need to be urgently addressed. The continuous rise in the level of energy consumption and the emission of greenhouse gases are the main forces driving the need for more effective use of renewable energy sources. The thermal energy storage system is one of the alternative solutions to address this matter. This Special Issue will deal with novel technologies and techniques for developing thermal energy storage systems in different applications. Topics of interest for publication include but are not limited to the following:

  • Science, technology, and the application of thermal energy storage;
  • A low-carbon power generation system integrated with renewable energy and thermal energy storage;
  • The integration of a thermal energy storage system in different applications (e.g., building, power plant, and hybrid storage system);
  • The synthesis, fabrication, and characterization of storage media;
  • Carbon capture and storage;
  • Economic assessment and analysis of thermal energy storage in various applications.

Dr. Mahyar Silakhori
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. Energies 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

  • Phase-change materials
  • Thermochemical storage
  • Low-carbon power generation
  • Hybrid solar systems
  • Thermal analysis
  • Heat and mass transfer analysis
  • Reactor design
  • Carbon capture and storage
  • Economic assessment

Published Papers (2 papers)

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Research

25 pages, 18244 KiB  
Article
Analysis of Energy Use and Energy Savings: A Case Study of a Condiment Industry in India
by Khan Rahmat Ullah, Marudhappan Thirugnanasambandam, Rahman Saidur, Kazi Akikur Rahman and Md. Riaz Kayser
Energies 2021, 14(16), 4798; https://doi.org/10.3390/en14164798 - 6 Aug 2021
Cited by 2 | Viewed by 3192
Abstract
Electric motors and boilers lead the industrial components which consume the largest portion of energy in an industry. This study explores the energy audit data of the condiment industry in India. The study mainly focuses on the estimation of the load factor, energy [...] Read more.
Electric motors and boilers lead the industrial components which consume the largest portion of energy in an industry. This study explores the energy audit data of the condiment industry in India. The study mainly focuses on the estimation of the load factor, energy use, energy savings and annual bill savings with payback period of the electric motors of the plant. During the audit, it was found that there were several motors running under loaded conditions despite non-availability of variable speed drives installed in the plant. Therefore, variable speed drives are recommended to be installed to save energy by reducing the motors speed by up to 60%. According to the estimation, about 276 MWh, 551 MWh and 827 MWh electrical energy can be saved for 20%, 40% and 60% speed reduction of the motors using variable speed drives, respectively, where in most of the cases the payback period remains below 1 year. Furthermore, some suggestions are made to improve the poor power factor of running motors by using capacitor banks to save the reactive power. Besides, an estimation of energy saving is performed with a 2-ton capacity boiler. Since, there was no heat recovery system in the boiler; an air-preheater is suggested to be installed at the end of flue gas exhausting path of the boiler with the purpose of saving 68 tons of fuel per annum and having a payback period of 12 months. Moreover, a digital monitoring system, namely, “The Smart Joules” has been proposed to be installed in the plant aiming at saving about 3–5% of total energy per annum and having a payback period of 19 months. Finally, a summarization is made concluding in the fact that about 90 MWh energy and 95 tons of fuel can be saved (excluding motor energy savings) per annum by implementing proposed measures with a payback period of 15 months. Full article
(This article belongs to the Special Issue Urban/District Thermal Energy System)
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21 pages, 7042 KiB  
Article
Thermal Performance and Numerical Simulation of the 1-Pyrene Carboxylic-Acid Functionalized Graphene Nanofluids in a Sintered Wick Heat Pipe
by Alireza Esmaeilzadeh, Mahyar Silakhori, Nik Nazri Nik Ghazali, Hendrik Simon Cornelis Metselaar, Azuddin Bin Mamat, Mohammad Sajad Naghavi Sanjani and Soudeh Iranmanesh
Energies 2020, 13(24), 6542; https://doi.org/10.3390/en13246542 - 11 Dec 2020
Cited by 19 | Viewed by 2479
Abstract
Experimental and numerical modeling of a heat pipe included with a phase change heat transfer was developed to assess the effects of three parameters of nanofluid, heat pipe inclination angles, and input heating power. Distilled water (DW) and 1-pyrene carboxylic-acid (PCA)-functionalized graphene nanofluid [...] Read more.
Experimental and numerical modeling of a heat pipe included with a phase change heat transfer was developed to assess the effects of three parameters of nanofluid, heat pipe inclination angles, and input heating power. Distilled water (DW) and 1-pyrene carboxylic-acid (PCA)-functionalized graphene nanofluid (with concentrations of 0.06 wt%) were used as working fluids in the heat pipe. A computational fluid dynamic (CFD) model was developed for evaluation of the heat transfer and two-phase flow through the steady-state process of the heat pipe. It was found that inclination significantly affects the heat transfer of the heat pipe. Maximum increment of thermal performance in the heat pipe reached 49.4% by using 0.06 wt% of PCA-functionalized graphene as working fluids. The result associated with this comparison indicates that the highest deviation is less than 6%, consequently confirming that the CFD model was successful in reproducing the heat and mass transfer processes in the DW and nanofluids charged heat pipe. The results of CFD simulation have good agreement between predicted temperature profiles and experimental data. Full article
(This article belongs to the Special Issue Urban/District Thermal Energy System)
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