Effects of hydrogen enrichment on compressed natural gas engine performance and emissions by Asnawi

“…A quasi-dimensional thermodynamic cycle simulation with a two-zone combustion model is developed to simulate the combustion characteristics,performance and emissions of a four-cylinder spark ignition (SI) engine fueled with CNG-hydrogen blends. …”
Get full text

Solar Thermochemical CO₂ Splitting Integrated with Supercritical CO₂ Cycle for Efficient Fuel and Power Generation by Xiangjun Yu, Wenlei Lian, Ke Gao, Zhixing Jiang, Cheng Tian, Nan Sun, Hangbin Zheng, Xinrui Wang, Chao Song, Xianglei Liu

“…Here, we propose an alternative way to upsurge energy conversion efficiency by integrating solar thermochemical CO₂ splitting with a supercritical CO₂ thermodynamic cycle. When gas phase heat recovery (<i>ε</i>_gg) is equal to 0.9, the highest energy conversion efficiency of 20.4% is obtained at the optimal cycle high pressure of 260 bar. …”
Get full text

Generating power from fluegas produced by boilers through thermodynamic organic rankine cycle by Rowshanaie, Omid

“…However, the changing of all parameters were affected by different mass flow rates of working fluids and different inlet pressures of expander. The ORC thermodynamic cycle was chosen for this study due to some advantages such as its simple structure, the availability of its components, and the ease of application for small and optimum industrial power generation. …”
Get full text

Characterization and design of non-adiabatic micro-compressor impeller and preliminary design of self-sustained micro engine system by Sirakov, Borislav Todorov, 1975-

Get full text
Get full text

Thermodynamic Analysis of a Regenerative Brayton Cycle Using H₂, CH₄ and H₂/CH₄ Blends as Fuel by Gontzal Lopez-Ruiz, Joseba Castresana-Larrauri, Jesús María Blanco-Ilzarbe

“…Due to the potential of hydrogen combustion in gas turbines to reduce the overall CO<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><msub><mrow></mrow><mn>2</mn></msub></semantics></math></inline-formula> emissions and the dependency on natural gas, further research is needed to understand the impact on the overall thermodynamic cycle. For that purpose, a qualitative thermodynamic analysis was carried out to assess the exergetic and energetic efficiencies of the cycle as well as the irreversibilities associated to a subsystem. …”
Get full text

Subcritical and supercritical Rankine steam cycles, under elevated temperatures up to 900°C and absolute pressures up to 400 bara by Osama A. Marzouk

“…The Rankine cycle is a conceptual arrangement of four processes as a closed vapor power thermodynamic cycle, where a working fluid (especially water as a liquid, as a vapor, and as a liquid-vapor mixture) can be used to convert heat into mechanical energy (shaft rotation). …”
Get full text

The magnetocaloric effect in Fe2P based alloys by Chen, Xi

“…RC is used to describe the thermodynamic cycle and is defined as the heat that can be transferred from cold end to hot end. …”
Get full text

Evaluation of Thermodynamic and Kinetic Contributions to Over-Extraction of Extractables by Nonpolar Organic Solvents in Comparison to Lipids in Exhaustive and Exaggerated Extracti... by Jianwei Li

“…Similar models are also derived from the thermodynamic cycle conversion, using the system constants of LDPE-water and Lipid-water partition systems. …”
Get full text

Ramsey theory and thermodynamics by Nir Shvalb, Mark Frenkel, Shraga Shoval, Edward Bormashenko

“…We address the following question how large should be a graph describing connections between discrete thermodynamic states to guarantee the appearance of thermodynamic cycles? The Ramsey theory supplies the answer to this question. …”
Get full text

Limits and Optimization of Power Input or Output of Actual Thermal Cycles by Emin Açıkkalp, Hasan Yamık

“…In this study, available power optimization and performance limits were defined all basic irreversible thermodynamic cycles, by using first and second law of thermodynamic. …”
Get full text

AUTOMATIC CONTROL SYSTEM OF HEAT PUMP STATION GAS COOLER AT THE WIDE RANGE OF HEAT LOAD by Juravleov A.A., Sit M.L., Sit B.M.., Poponova O., Zubatii A.

“…There is examined the structure the of control system of gas cooler of heat pump station, which uses the carbon dioxide as the working fluid in the transctitical thermodynamical cycle. It is analiyed the structure of the complex: heat pump station – district heating system.…”
Get full text

Review of enhancement for ocean thermal energy conversion system by Safaa Malik Abbas, Hend Dakhel Skhaal Alhassany, David Vera, Francisco Jurado

“…This paper provides an overview of studies on closed thermodynamic cycles and the numerous difficulties that OTEC technology faces. …”
Get full text

Pumped Thermal Energy Storage Technology (PTES): Review by Ayah Marwan Rabi, Jovana Radulovic, James M. Buick

“…There have been a number of PTES systems proposed using different thermodynamic cycles, including the Brayton cycle, the Rankine cycle, and the transcritical Rankine cycle. …”
Get full text

Superstructure-free synthesis and multi-objective optimization of supercritical CO₂ cycles by Chen, Xiaoting, Li, Xiaoya, Pan, Mingzhang, Wang, Zongrun

“…The improved superstructure-free algorithm can also be applied to other thermodynamic cycles and can greatly contribute to the intelligent configuration design and optimization of similar thermodynamic cycles.…”
Get full text

The role and impact of costing methods in determining the viability of energy systems by Shah Rukh Jamil, Muhammad Waqar, Muhammad Kashif Shahzad

“…In this context, economics is one of the relevant factors which comes to mind while choosing a right working fluid for thermodynamic cycles if consider this as a test case. Although a wide variety of relevant approaches is available. …”
Get full text

Thermodynamic Analysis of Negative CO₂ Emission Power Plant Using Aspen Plus, Aspen Hysys, and Ebsilon Software by Paweł Ziółkowski, Paweł Madejski, Milad Amiri, Tomasz Kuś, Kamil Stasiak, Navaneethan Subramanian, Halina Pawlak-Kruczek, Janusz Badur, Łukasz Niedźwiecki, Dariusz Mikielewicz

“…Developed models of a novel gas cycle which use selected codes allow the prediction of basic parameters of thermodynamic cycles such as output power, efficiency, combustion composition, exhaust temperature, etc. …”
Get full text

The Role of K-cycle on unified equation of state by YAHYA, Mochammad Utoro

“…K-cycle was a thermodynamics cycle at isothermal reversible condition consisted of two isomolar and two isobar processes. …”

CYCLE DIAGRAM OF GEOTHERMAL ENERGY by Stanislav A. Yankovsky, Sergey V. Lavrinenko, Svyatoslav A. Tsibulskiy, Natalia S. Yankovskaya, Denis L. Gamov

“…Among the main thermodynamic cycles and thermal schemes implemented, it is possible to single out direct cycle geothermal power plants with one-stage and two-stage separation of a geothermal source, with direct supply of dry steam to the turbine, binary and combined versions. …”
Get full text

Design, Modeling and Characterization of a Multiscale Heat Exchanger for High-Temperature, High-Pressure Applications by Wilson, Chad T.

“…Specifically, the shift to high-temperature, high-pressure thermodynamic cycles for improved efficiency has offered a new opportunity for device-level innovations, including producing a heat exchanger that supersedes classical material and design operating limits. …”
Get full text

Many-body quantum heat engines with shortcuts to adiabaticity by Andreas Hartmann, Victor Mukherjee, Wolfgang Niedenzu, Wolfgang Lechner

“…Quantum heat engines are modeled by thermodynamic cycles with quantum-mechanical working media. …”
Get full text