Results 261 to 270 of about 69,983 (311)

Thermodynamics of the purine nucleotide cycle

Biophysical Chemistry, 2006
Since the standard Gibbs energies of formation are known for all the species in the purine nucleotide cycle at 298.15 K, the functions of pH and ionic strength that yield the standard transformed Gibbs energies of formation of the ten reactants can be calculated.
openaire   +2 more sources

Thermodynamics and Kinetics of the Glyoxylate Cycle

Biochemistry, 2006
Because the standard Gibbs energies of formation of all the species of reactants in the glyoxylate cycle are known at 298.15 K, it is possible to calculate the apparent equilibrium constants of the five reactions in the cycle in the pH range 5-9 and ionic strengths from 0 to approximately 0.35 M.
openaire   +2 more sources

Thermodynamics of Cycles

2016
An important application of thermodynamics is the analysis of power cycles through which the energy absorbed as heat can be continuously converted into mechanical work. A thermodynamic analysis of the heat engine cycles provides valuable information regarding the design of new cycles or a combined cycle for improving the existing cycles, or pushing ...
openaire   +1 more source

THERMODYNAMICS AND ENGINE CYCLES

2003
In this chapter, a brief engine history is presented to trace some of the thermodynamic ideas that are used in modern engines. The ideal gas law and polytropic compression/expansion law are reviewed as lead-ins to cycle analysis. Then the Otto cycle is presented as the ideal model for four-cycle SI engines.
null Carroll E. Goering, null Marvin L. Stone, null David W. Smith, null Paul K. Turnquist   +3 more
openaire   +1 more source

A Novel Approach to the Teaching of Thermodynamic Cycles and the Laws of Thermodynamics

Innovations in Engineering Education: Mechanical Engineering Education, Mechanical Engineering/Mechanical Engineering Technology Department Heads, 2005
This paper outlines a simple particle mechanics model in which a single particle represents the thermodynamic fluid (gas) in a heat engine (exemplified by a piston engine). By mechanics based reasoning the model demonstrates the connection between the Carnot efficiency limitation of heat engines and the Kelvin-Planck statement of Second Law requiring ...
W. John Dartnall, John Reizes
openaire   +1 more source

Basic Thermodynamic Cycles

2020
After making clear the difference between isothermal-duty and non-isothermal-duty regimes, the basic cycles, Joule Thomson, Brayton and Claude, are considered and simply calculated. Emphasis is put on cycle optimisation.
openaire   +1 more source

Thermodynamics and Power Cycles

2016
This chapter summarizes fundamental principles of thermodynamics with a focus on applications related to analysis of nuclear power plants. Thermodynamics is the study of energy transformations and the relationships among properties of substances.
openaire   +1 more source

Photosynthesis as a thermodynamic cycle

Heat and Mass Transfer, 2019
Thermodynamics of photosynthesis has been a subject of interest to the scientific community; it is, therefore, addressed in this paper. This work reveals that traditional thermodynamic relationships may be used to calculate and project photosynthesis. Solar energy is required for the chemical reaction of green matter production.
openaire   +1 more source

Special Thermodynamic Cycles

2020
Combining the Joule Thomson and Brayton basic cycles allows designing special cycles for high powers or operating at temperatures lower than 4.5 K. The electrical power that is taken on the net increases so much that it is mandatory to find most efficient solutions.
openaire   +1 more source

Thermodynamic cycles

2017
Jader Barbosa, C. J. L. Hermes
openaire   +2 more sources