Submit to Energies Review for Energies Propose a Special Issue

Journal Browser

► Journal Browser

Energy Saving Optimization of Combined Heat and Power Systems

Print Special Issue Flyer
Special Issue Editors
Special Issue Information
Keywords
Published Papers

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

Deadline for manuscript submissions: closed (20 January 2024) | Viewed by 7042

Share This Special Issue

Special Issue Editors

Prof. Dr. Iliya Iliev

E-Mail Website
Guest Editor

Department of Thermotechnics, Hydraulics and Environmental Engineering, University of Rousse, Ruse, Bulgaria
Interests: energy saving; energy engineering; heat exchangers; renewable energy; photovoltaics; mechanical engineering; thermal engineering; engineering thermodynamics

Prof. Dr. Ion V. Ion

E-Mail Website
Guest Editor

Department of Thermal Systems and Automotive, “Dunarea de Jos” University of Galati, Galati, Romania
Interests: optimization; engineering thermodynamics; modeling and simulation; thermal systems; energy saving, renewable energy (solar thermal, biomass)

Dr. Paweł Madejski

E-Mail Website
Guest Editor

Faculty of Mechanical Engineering and Robotics, Department of Power Systems and Environmental Protection Facilities, AGH University of Science and Technology, al. Mickiewicza 30, 30-059 Krakow, Poland
Interests: thermal power engineering; power plants; computational fluid dynamics; engineering thermodynamics; steam boilers and heat exchangers; power plant simulation; engineering thermofluids
Special Issues, Collections and Topics in MDPI journals

Prof. Dr. Ravinder Kumar

E-Mail Website
Guest Editor

School of Mechanical Engineering, Lovely Professional University, Phagwara, Punjab, India
Interests: reliability analysis; engineering; thermodynamics; applied thermodynamics; thermal engineering; power plants; hydrogen production; solar energy carbon capture; and storage energy engineering; gasification; energy conversion; energy utilization energy modelling; waste heat recovery; renewable energy technologies
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

The energy efficiency of large energy capacities, including CHP, has always been the focus of our society's attention because it is directly related to saving energy resources and improving the ecological environment.

Today, in the conditions of an energy crisis and constantly rising prices of energy resources, the question is posed to our society and the scientific community to look for modern solutions for optimizing heat-energy processes in CHP, leading to the increase of energy efficiency. On the other hand, our society is expected to move at an accelerated pace towards the transition to green energy and mass use of RES to generate green hydrogen. This Special Issue aims to present and disseminate the most recent advances related to the theory, design, modelling, application, control, and condition monitoring of all types of CHP systems.

Topics of interest for publication include, but are not limited to:

Turbomachinery, boilers, heat exchangers, electrical and auxiliary equipment;
Conventional power and combined heat and power (CHP) plants;
Mini and micro-CHPs;
Low-temperature energy technologies (e.g., ORC, heat pumps, HVAC);
Hydrogen production and utilization technologies;
Cost savings and decarbonization with CHP;
Energy storage and management;
CHP technologies (fuel cells, gas turbines, microturbines, reciprocating engines, steam turbines);
Absorption chillers;
Thermal energy storage;
District energy systems;
Waste heat to power;
Modelling and optimization of CHP;
Integration of renewable energy sources;
Thermoeconomic analyses;
Combined cycles.

Prof. Dr. Iliya Iliev
Prof. Dr. Ion V. Ion
Dr. Pawel Madejski
Prof. Dr. Ravinder Kumar
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. 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

combined heat and power (CHP)
gas piston engines
gas turbines engines
steam turbines, comparative analysis
hydrogen production
cost savings and decarbonization with CHP
new applications
modeling and simulation
design
control

Published Papers (3 papers)

Download All Papers

Research

Jump to: Review

10 pages, 1784 KiB

Open AccessArticle

Prediction of Gas Hydrate Formation in the Wellbore

by Xinyue Duan, Jiaqiang Zuo, Jiadong Li, Yu Tian, Chuanyong Zhu and Liang Gong

Energies 2023, 16(14), 5579; https://doi.org/10.3390/en16145579 - 24 Jul 2023

Cited by 2 | Viewed by 1301

Abstract

The formation of gas hydrates due to temperature and pressure changes during gas storage in the wellbore poses significant danger, necessitating the prediction of temperature and pressure distribution as well as of hydrate formation locations. We establish a temperature model that couples total thermal resistance and temperature in the wellbore-stratum composite medium system. Utilizing the two-phase pressure model alongside the temperature model, we conduct coupling calculations of temperature and pressure. Based on both temperature and pressure distribution within the wellbore and hydrate formation curve, we predict hydrate formation regions during production and analyze factors influencing temperature and pressure distribution. Results indicate that gas production rate and specific gravity of natural gas are major influencers on wellbore temperature and pressure distribution, while production time has minimal impact. Full article

(This article belongs to the Special Issue Energy Saving Optimization of Combined Heat and Power Systems)

► Show Figures

Figure 1

22 pages, 5107 KiB

Open AccessArticle

Techno-Economic Analysis of the Modernization Options of a Gas Turbine Power Plant Using Aspen HYSYS

by Dias Raybekovich Umyshev, Eduard Vladislavovich Osipov, Andrey Anatolievich Kibarin, Maxim Sergeyevich Korobkov, Tatyana Viktorovna Khodanova and Zhansaya Serikkyzy Duisenbek

Energies 2023, 16(6), 2704; https://doi.org/10.3390/en16062704 - 14 Mar 2023

Cited by 1 | Viewed by 2410

Abstract

Currently, 90% of Kazakhstan’s oil is situated in 15 oil and gas fields where simple cycle gas turbines are utilized for electricity generation. The need for developing techniques to enhance the efficiency and eco-friendliness of fuel consumption in Kazakhstan’s oil fields is imperative. In this article, methods for improving the energy efficiency of a simple gas turbine power plant functioning in an oil field are discussed, with consideration given to the impact of ambient temperature and specific environmental constraints, such as water scarcity and high temperatures. Two schemes to increase efficiency are evaluated: the first involves the utilization of a waste heat boiler for steam production intended for technological purposes, while the second involves electricity generation through a combination of a waste heat boiler and a steam turbine. Models based on Aspen HYSYS were formulated, with actual gas turbine power plant operation taken into account. Analysis indicated that a waste heat boiler scheme could generate up to 350 t/h of steam, completely replacing power boilers. Im plementation of the combined cycle power plant (CCPP) system resulted in the production of up to 262.42 MW of electricity. Environmental analyses demonstrated that both schemes exhibit comparable specific emissions in terms of power generation, with 0.56 kgCO₂/kWh for HRSG and 0.53 kgCO₂/kWh for CCPP. Technological, environmental, and economic analyses were conducted to determine the most promising technology, considering the specifics of the oil fields in Kazakhstan. Based on the payback period for HRSG (4 years) and CCPP (7 years) options, it was deduced that the former is the most favorable for implementation Full article

(This article belongs to the Special Issue Energy Saving Optimization of Combined Heat and Power Systems)

► Show Figures

Figure 1

Review

Jump to: Research

17 pages, 7166 KiB

Open AccessReview

Theoretical and Experimental Studies of Combined Heat and Power Systems with SOFCs

by Iliya Krastev Iliev, Antonina Andreevna Filimonova, Andrey Alexandrovich Chichirov, Natalia Dmitrievna Chichirova, Alexander Vadimovich Pechenkin and Artem Sergeevich Vinogradov

Energies 2023, 16(4), 1898; https://doi.org/10.3390/en16041898 - 14 Feb 2023

Cited by 14 | Viewed by 2336

Abstract

The article presents an overview of experimental layout design solutions and the general operation scheme of combined heat and power systems with a high-temperature solid oxide fuel cell (SOFC). This system is an environmentally friendly and energy-saving way to produce electricity and heat. The use of high-temperature SOFCs makes it possible to obtain an electrical efficiency of 45–55%. Combining the electrochemical and mechanical system can increase the total efficiency by up to 60–65% in a hybrid power plant. This article discusses the structure and relationship between the components of a hybrid power plant and various modification options for efficient power generation. The technological schemes for existing and tested hybrid power plants with an SOFC and gas turbine are presented and described in detail. When designing a hybrid power plant, the key factors are the choice of design, heat source, and fuel-reforming method; the design of a solid oxide fuel cell and the number of modules in a stack; selecting devices for generating electricity with the development of cogeneration or trigeneration cycles (for possible use in thermal power plants and for the energy supply of social facilities); the direction of material flows within the system; pressure and tightness; and the interconnection of the hybrid power system elements. Researchers have accumulated and described in scientific papers extensive experience in designing, theoretical research, and numerical modeling of hybrid power plants with high-temperature SOFCs. It is shown that experimental hybrid power plants based on SOFCs of the megawatt class are in operation. Hybrid systems with an SOFC are designed only for the kilowatt power class. Trigeneration systems with a steam turbine exist only in the form of theoretical calculations. Trigeneration systems show the highest electrical efficiency, but the highest construction and service costs. Systems based on high-temperature SOFCs can be used for autonomous systems, and in combination with gas and steam turbines only at thermal power plants. Experimental laboratory studies are limited by the high cost of installations and the difficulties of testing the possibility of using combined heat and power systems on an industrial scale. Therefore, a more detailed study of the relationship between the units of a combined heat and power system is recommended in order to achieve the high efficiency indicators obtained from theoretical studies. Full article

(This article belongs to the Special Issue Energy Saving Optimization of Combined Heat and Power Systems)

► Show Figures