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Low-Grade Heat-Driven Multigeneration Systems

A special issue of Sustainability (ISSN 2071-1050). This special issue belongs to the section "Energy Sustainability".

Deadline for manuscript submissions: closed (30 April 2022) | Viewed by 2217

Special Issue Editors


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Guest Editor
Department of Mechanical Engineering, National University of Singapore, Singapore
Interests: enhanced heat transfer; microchannel; thermal management; electronics cooling
Department of Mechanical Engineering, National University of Singapore, 9 Engineering Drive, Singapore 117575, Singapore
Interests: thermal energy systems; renewable energy; HVAC; sustainability; multigeneration; low-grade heat; innovation and entrepreneurship
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

We are pleased to invite you to contribute to our Special Issue titled “Low-Grade Heat-Driven Multigeneration Systems”, which will be published in the MDPI journal Sustainability. This Special Issue is open to submissions of review and research articles focusing on harnessing abundantly available low-grade heat to power multigeneration systems (cooling, electrical power, combined cooling and power, etc.). The aim of this Special Issue is to provide insights into the latest technological developments in low-quality heat-driven systems including but not limited to waste heat, solar heat, geothermal, and biomass energy. While there are a few commercial technologies operating at medium temperature ranges (150–300 ºC), there is still a lot of room and potential for R&D in the low-temperature range (<100 ºC).

The topics of interest for publications include but are not limited to:

  • Thermodynamic cycles for waste heat recovery;
  • Solar thermal refrigeration;
  • Hybrid cycles and architectures;
  • Combined cooling and power (CCP) cycles;
  • Cogeneration, trigeneration and polygeneration systems;
  • Energy and exergy analysis;
  • Modelling, simulation and optimization of systems;
  • Integration of thermal energy storage;
  • Heat transfer enhancement;
  • Geothermal energy utilization;
  • CFD design and optimization for higher energy efficiency;
  • Working fluid section;
  • Thermo-economic optimization.

We look forward to receiving your paper. Please feel free to contact us if you have any questions

Prof. Dr. Poh Seng Lee
Dr. Fahid Riaz
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. Sustainability 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 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

  • waste heat recovery
  • low-grade heat
  • energy efficiency
  • thermodynamic cycles
  • thermal energy storage
  • working fluids
  • system architectures
  • optimization
  • thermo-economics
  • combined cycles
  • heat transfer
  • modelling
  • simulation
  • ejector
  • hybrid systems
  • polygeneration

Published Papers (1 paper)

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Research

26 pages, 7868 KiB  
Article
Modeling of a Combined Kalina and Organic Rankine Cycle System for Waste Heat Recovery from Biogas Engine
by Cem Öksel and Ali Koç
Sustainability 2022, 14(12), 7135; https://doi.org/10.3390/su14127135 - 10 Jun 2022
Cited by 1 | Viewed by 1687
Abstract
Converting waste heat into electricity has captured the interest of scientists for years because of its enormous potential to improve energy efficiency and to lessen environmental impacts. While there are numerous applications to recover lost energy, they are often not efficient or cheap [...] Read more.
Converting waste heat into electricity has captured the interest of scientists for years because of its enormous potential to improve energy efficiency and to lessen environmental impacts. While there are numerous applications to recover lost energy, they are often not efficient or cheap enough to make a real-world impact. The aim of this study is to develop a heat recovery system for the waste recycling factory operating in Hatay, Turkey. We combined the Kalina Cycle (KC) with the Organic Rankine Cycle (ORC) to extract exhaust gas and jacket water waste heat from a combined heat and power engine. An ammonia–water mixture was selected as the working fluid in KC, while R123, R236ea and R124 were chosen and tested for the ORC. The selection of working fluids was made based on certain environmental impacts such as global warming or ozone depletion potential, without further exploring other working fluid options, which could be considered a limitation of this study. The optimal values of KC parameters, including mass fraction, turbine inlet pressure and inlet temperature, were found to be 90%, 430 °C and 90 bar, respectively. The KC was then combined with the ORC using three different working fluids, among which R123 yielded the best results. The net power, exergy and thermal efficiency of the combined cycle were calculated as 211.03 kW, 52.83% and 26.50%, respectively, while the payback period was estimated to be 4.2 years. It should be noted that the applicability domain of the obtained results is limited to the climate conditions studied here. We concluded that the combination of the KC and ORC can be efficiently used for the recovery of waste heat energy. Full article
(This article belongs to the Special Issue Low-Grade Heat-Driven Multigeneration Systems)
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