The Stirling engine is a path that was not intensively researched and developed on compared to internal combustion engines. However, with advanced technology one has now compared to the 1800s, Stirling engines can be used for purposes including generating electricity and heat in households. Its potential lays in its high thermal efficiency, long life span, as well as the advantage that it can operate quietly. This study investigates and discusses the applications of Stirling engines in houses. There are a lot of ways that Stirling engines can be implemented in daily life, including micro-CHP, water pump, electricity generator. In the future, with better technologies, Stirling engines may be brought up more due to its high efficiency and other beneficial traits. These results aim to increase the attention to Stirling engines and the possibility of implementing it for residential purposes, possibly leading to further research on the topic to further exploit the potentialities of the Stirling engines.

As a matter of fact, in the emerging field of distributed generation, micro turbines (MT) are seen as having significant potential in power generation especially in recent years. In reality, it can provide flexibility as well as robustness for PV generation system with great performances. Therefore, with this in mind, this paper proposes a hybrid power system integrating MT into PV generation system. To be specific, this study investigates as well as discusses the operating principles of MT. On this basis, a coordinated PQ control strategy for the hybrid PVMT power generation system is proposed. At the same time, the inertia enhancement brought by the MT is analyzed validating the potential and feasibility of the proposed strategy. According to the analysis, the current limitations as well as future improvements are discussed in the meantime. Overall, these results shed light on guiding further exploration of MT integrating PV generation systems and pave a novel path for designs.

As a matter of fact, on account of the increasing energy requirements in the world and pressure on environmental conservation globally, geothermal power is becoming an increasingly important source of energy especially in recent years. With this in mind, the objective of this study is to examine as well as investigate developments in energy focusing on extraction techniques, utilization practices and future trends. At the same time, it also scrutinizes how Enhanced Geothermal Systems (EGS) have been evolving and their capabilities in terms of accessing reserves as well as integration with other sustainable energy types. Notably, advances in drilling and heat transfer technologies have significantly improved efficiency of systems. According to the analysis, the report concludes that despite existing challenges such as costs, geothermal energy’s negligible environmental impact coupled with technological advancements has positioned it as a worthwhile green alternative for tomorrow. These results shed light on guiding further exploration of geothermal energy.

As a matter of fact, the Stirling engine, with its origins dating back to 1816, has undergone significant development over the centuries, which has become an inevitable of heat engines. Contemporarily, it has already been widely used from agriculture irrigation to space exploration. With this in mind, this study will offer a detail analysis of the principle as well as applications for such engines. In reality, Stirling engine shows its potential and advantages in those areas, possessing advantages in high efficiency and environmentally friendly. Nevertheless, it also has some drawbacks on high costs, slow dynamic response, and complex structure according to the analysis. This study systematically goes through the historical development, working principles, advanced technologies as well as the state-of-art applications. Based on the evaluations, the current limitations as well as future prospects of Stirling engines will be demonstrated at the same time. Overall, these results shed light on guiding further exploration of Stirling engines.

As a matter of fact, the development of contemporary internal combustion engines focuses on enhancing fuel efficiency and reducing emissions due to stringent environmental regulations. With the rise of electric cars, the development of hybrid technologies has driven innovation in internal combustion engines, and many modern vehicles combine internal combustion engines with electric motors. In this study, it introduces three different types of thermal engines with latest application in different transportation. By analyzing the limitations of internal combustion engines like thermodynamic limits and emission causing air pollution, it points the direction of future efforts on thermal engines. According to the results, internal combustion engines can be improved by increasing compression ratio through optimizing design and using better fuel like hydrogen. This article hopes to provide a clear understanding of the advantages and limitations of internal combustion engines. For companies and researchers, especially in the automotive sector, it aims to support strategic decisions in engine design and deployment.

As a matter of fact, gas turbines covers a large part in the maps of contemporary generators and propulsion systems. With this in mind, this study will offer a comprehensive evaluation as well as analysis of gas turbine working principles, key technologies, and cutting-edge applications. The study systematically elucidates the basic structure, thermodynamic cycle characteristics, and performance influencing factors of gas turbines. It focuses on the application of advanced gas turbines in fields such as power generation, aviation, and marine, demonstrating their advantages of high efficiency, cleanliness, and flexibility. This study analyzes the current challenges faced by gas turbine technology and points out that future research should focus on key technologies such as materials, cooling, and combustion to promote efficiency improvement, emission reduction, and fuel adaptability enhancement in gas turbines. This research deepens the understanding of gas turbine technology and can provide an important reference for engineering practice and innovative research.

As a matter of fact, engines have been widely adopted and implemented in contemporary society, which has become one of the inevitable tools for human beings’ daily life in recent years. Nowadays, with the jet engines is extensively used on various aircraft, each type of engines has diversely functions in using. Therefore, with this in mind, the topic of this paper is to compare the different engines and their current use in the market. This research methods of this paper are as follow. Firstly, the data used by each engine are collected; secondly, the design sketch of each engine is sorted out, and the advantages and disadvantages of each engine are obtained through comparative analysis. According to the analysis, the research finds that the engines are all extending out of each other, and some features of engines are adapted to specific aircraft. Based on the comparison and evaluations, the turbojet is the most widely used engine.

The evolution of locomotives is the cornerstone of modern transport and has had a profound impact on economic growth and social mobility. From the pioneering steam locomotives of the 19th century, which marked the beginning of a transformative journey for rail transport, to today's complex diesel and electric locomotives, each technological advance has shaped the efficiency, speed and environmental impact of rail systems. With this in mind, this study will offer a systematically analysis for the principle as well as applications for such engine. Steam locomotives revolutionized the transportation of goods and passengers, laying the foundation for the future of rail travel. Diesel locomotives further enhance operational flexibility and reliability, while electric locomotives are becoming mainstream due to their energy efficiency and low emissions. This study explores the historical development of locomotives, highlighting key technological milestones and their impact on rail transport. Meanwhile, the current advances in locomotive technology, including the integration of hybrid power systems and alternative energy sources, are studied. As the rail industry faces increasing pressure for sustainability, it is important to understand the evolution and future prospects of locomotives. By analyzing these developments, this paper aims to provide insights into different locomotive principles and how locomotive technology is evolving in an era of increased environmental awareness and technological innovation, shaping the future of rail transportation.

In 1903, the Wright Brother made the dream of flight come true. Contemporarily, as the development of modern technology, aviation has become a major type of daily transportation. The jet engines are the magic that makes the airplanes soar high in the blue sky. As the jet engine is a major invention in human history that brought humans to the sky, it is meaningful to gig into the principle behind the engines. In this article, the principle of 5 jet engines are explained. There are benefits but also impacts due to the human beings. Environmental problems are caused by the exhausted gases, healthy of people who work and live near the airstrips and airports are threatened. Different types of jet engine produced by different companies latest are enumerated and stated with detailed data such as thrust and bypass ratio. According to the analysis, the current limitations and challenges of the development with the future prospect are stated.

Four-stroke engines a type of internal combustion engine (IC engine) that can turn the heat provided from the fuel to work, and they are mainly classified as two groups, which are gasoline engines and diesel engines. Four-stroke engines can be applied to high power machines because of its high thermal efficiency. In four-stroke engines, the piston reaches the dead center four times in the cylinder to complete a cycle. This cycle includes the taking in of gas, the compression, the ignition, the expansion and the exhaustion of gas. In gasoline engine, this cycle is called the Otto cycle, and in diesel engine, this cycle is called the Diesel cycle. The greatest difference between these two engines is that they burn different types of fuel. In that way, the procedure of converting the heat to work is different. To help this cycle performs better economically and more efficiently, additional attachments such as hybrid engine and computer assistance are used. This research summarizes and analyses the application of four-stroke engines in land transportation, in aviation and in marine transportation, and this article gives a possible prediction to the future trend of the technology advancements of engines in transportation based on the analyses.