IN-SITU THERMAL INTEGRATION BETWEEN H2O/CO2 CO-ELECTROLYSIS AND THERMOCHEMISTRY BY HEAT-FLOW DESIGN FOR EFFICIENT DIRECT POWER-TO-METHANE

2018 ◽  
Author(s):  
Yu Luo ◽  
Yixiang Shi ◽  
Yanbo Chen ◽  
Wenying Li ◽  
NingSheng Cai
Keyword(s):  
Heat Flow ◽  
Direct Power ◽  
Thermal Integration

scholarly journals In situ determination of heat flow in unconsolidated sediments

Geophysics ◽  
1981 ◽  
Vol 46 (1) ◽  
pp. 76-83 ◽  
Author(s):  
J. H. Sass ◽  
J. P. Kennelly ◽  
W. E. Wendt ◽  
T. H. Moses ◽  
J. P. Ziagos
Keyword(s):  
Heat Flow ◽  
Thermal Gradient ◽  
Equilibrium Temperature ◽  
Unconsolidated Sediments ◽  
Heat Sources ◽  
Geothermal Resources ◽  
Flow Measurements ◽  
Thermal Measurements

Subsurface thermal measurements are the most effective, least ambiguous tools for locating geothermal resources. Measurements of thermal gradient in the upper few tens of meters can delineate the major anomalies, but it is also desirable to combine these gradients with reliable estimates of thermal conductivity, to provide data on the energy flux and to constrain models of the heat sources responsible for the anomalies. Problems associated with such heat flow measurements include the economics of casing or grouting holes, the long waits and repeated visits necessary to obtain equilibrium temperature values, the possible legal liability arising from disturbance of aquifers, the hazards presented by pipes protruding from the ground, and the security problems associated with leaving cased holes open for periods of weeks to months.

Hydration of Synthetized Clinker Phases C3S and C3A with Metakaolin in Isothermal Conditions

2015 ◽  
Vol 1124 ◽  
pp. 23-30 ◽  
Author(s):  
Martin Boháč ◽  
Radoslav Novotný ◽  
Jiří Másilko ◽  
Tomáš Opravil ◽  
František Šoukal ◽  
...  
Keyword(s):  
Phase Composition ◽  
Heat Flow ◽  
Isothermal Calorimetry ◽  
X Ray Diffraction ◽  
Early Hydration ◽  
X Ray ◽  
Calorimetric Measurements ◽  
Flow Development ◽  
Cementitious Systems

Heat flow development during initial hydration of fresh pastes based on mixtures of pure clinker phases C3S and C3A with metakaolin was investigated by means of isothermal calorimetry. Phase composition development was examined by "in situ" X-ray diffraction technique. Obtained results from calorimetric measurements and X-ray diffraction were correlated with recent studies in field of hydration of cementitious systems. The effect of co-sintering of clinker phases on early hydration was characterized by isothermal calorimetry.

scholarly journals Heat-flow variability of suspended timber ground floors: Implications for in-situ heat-flux measuring

2017 ◽  
Vol 138 ◽  
pp. 396-405 ◽  
Author(s):  
S. Pelsmakers ◽  
R. Fitton ◽  
P. Biddulph ◽  
W. Swan ◽  
B. Croxford ◽  
...  
Keyword(s):  
Heat Flux ◽  
Heat Flow ◽  
Flow Variability

scholarly journals Application of Finite Difference Method for determining lunar regolith diurnal temperature distribution

2018 ◽  
Vol 49 ◽  
pp. 00052 ◽  
Author(s):  
Marcin Kaczmarzyk ◽  
Marcin Gawronski ◽  
Grzegorz Piatkowski
Keyword(s):  
Heat Transfer ◽  
Heat Flow ◽  
Finite Difference ◽  
Finite Difference Method ◽  
Difference Method ◽  
Lunar Regolith ◽  
In Situ Measurements ◽  
Thermal Boundary Conditions ◽  
Transient Heat Flow

This study was performed in order to verify viability of using finite difference method and proposed simple astrometrical model for modelling heat transfer in lunar regolith. The concept was examined by developing FD model of heat flow for upper 0,9 m of lunar regolith, and comparing obtained results with in situ measurements provided by Apollo 15 and 17 heat flow experiments. The model was based on FDM approximation of Fourier’s law for one dimensional transient heat flow. Both constant and temperature-dependent thermophysical properties of lunar regolith were obtained from in situ measurements. Thermal boundary conditions were assumed on in situ measurements and on remote sensing based analytical model. In order to approximate Sun's position at lunar sky, simple analytical astrometric model of lunar rotation was developed. Matlab 2012a was used to conduct the calculations. Stable solutions were obtained for latitudes between 0 and 80°. Satisfactory agreement between Apollo 15 and 17 in situ measurements and FDM modelling was observed. A conclusion was reached, that both FDM and proposed astrometrical model are to be successfully applied for modelling heat transfer in lunar regolith.

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