Nuclear-thermochemical

High temperature nuclear thermochemical cycles, hydrogen production by, 13 847-849... 

Nuclear thermochemical and high temperature electrolysis High temperature corrosion-resistant materials Advanced catalysts and membrane materials Durable electrode and seal materials for high temperature electrolysis... 

There is a great economic potential of nuclear thermochemical cycles, i.e., the H2 production by means of water and nuclear heat compared with electrolytic H2 from nuclear electricity. The HTGR is typically considered the high temperature heat source of... 

Schultz (2003) estimates the costs for a nuclear thermochemical facility utilizing the S-I cycle. The estimated capital cost for the hydrogen... 

The CSP estimates rely heavily on assumptions for the nuclear thermochemical facility for cost estimates for the S-I cycle. Jones (2005) notes that a different cycle may be preferable for use with CSP technologies for several reasons including... 

However, until the study for CSP is complete and performance and cost estimates for commercial plants developed, the best available information about thermochemical hydrogen production comes from the nuclear studies. Consequently, the basis for the CSP inputs used in this model is the same as for the nuclear thermochemical case - based on the sulfur-iodine cycle cost and performance information from Schultz (2003). 

In Fig. 7.68 the oxidising and sulphiding potentials of four different atmospheric environments, i.e. conventional coal combustion (A), fluidised bed combustion (B), conventional coal gasification (C) and coal gasification using nuclear heat (D), are shown on the thermochemical phase stability... 

Clausius-Clapeyron, 230,303-305 Gibbs-Helmholtz, 459,461 Henderson-Hasselbalch, 79-80 mass relation, 62-63 Nemst, 493-494 net ionic, 79-80 nonmetals, 575q nuclear, 513,530-531q Planck s, 135 redox, balancing, 90-92 Schrodinger, 140 thermochemical, 204... 

The properties of the hydrogen molecule and molecule-ion which are the most accurately determined and which have also been the subject of theoretical investigation are ionization potentials, heats of dissociation, frequencies of nuclear oscillation, and moments of inertia. The experimental values of all of these quantities are usually obtained from spectroscopic data substantiation is in some cases provided by other experiments, such as thermochemical measurements, specific heats, etc. A review of the experimental values and comparison with some theoretical... 

Nuclear energy can produce hydrogen in several ways (1) nuclear heated steam reforming of natural gas, (2) electrolysis of water using nuclear power, (3) HTE using minor heat and major electricity from nuclear reactor, and (4) thermochemical splitting of water using... 

Pickard, P., Sulfur-iodine thermochemical cycle, 2006 Annual Merit Review Proc., Hydrogen Production and Delivery, D. Nuclear Energy Initiative, http //www.hydrogen.energy.gov/ annual review06 delivery.html. 

Oxidation of ClF by F2 yields C1F3, an important fluorinating agent formerly used to produce the uranium compounds in nuclear fuels ClF(g) + F2(g) — C1F3(1). Use the following thermochemical equations to calculate A//°rxn for the production of C1F3 ... 

In section 5.1, you learned about the energy changes that accompany physical changes, chemical reactions, and nuclear reactions. You learned how to represent energy changes using thermochemical equations and diagrams. In the next section, you will determine the enthalpy of a reaction by experiment. 

Different strategies have evolved for thermochemical hydrogen production to effectively utilize the potentials of, in particular, nuclear and solar thermal energy sources. These strategies, which we discuss below, can be categorized depending upon the number of process steps involved and whether electrolysis is employed in a reaction. 

Gorensek MB, Summers WA, Buckner MR (2004) Model-based evaluation of thermochemical nuclear hydrogen processes, Trans Am Nucl Soc 91 107-108... 

By 2015, research and develop high-and ultra-high-temperature thermochemical/electrical processes to convert hydrogen from high temperature heat sources (nuclear or solar) with a projected cost competitive with gasoline. 

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