scholarly journals ALTERNATIVE METHODS OF OBTAINING GEOTHERMAL HEAT FROM THE EARTH

2018 ◽  
Vol 10 (2) ◽  
Author(s):  
MARTIN VANTÚCH ◽  
ANDREJ KAPJOR ◽  
MICHAL HOLUBčÍK
Keyword(s):  
Alternative Methods ◽  
Geothermal Heat ◽  
The Earth

scholarly journals Slope erosion control with the use of fly-ash and sewage sludge

2011 ◽  
Vol 43 (2) ◽  
pp. 101-111 ◽  
Author(s):  
Eugeniusz Koda ◽  
Piotr Osiński
Keyword(s):  
Fly Ash ◽  
Sewage Sludge ◽  
Safety Factor ◽  
Vegetation Cover ◽  
Erosion Control ◽  
Alternative Methods ◽  
Recycled Materials ◽  
The Earth ◽  
Earth Slopes

Slope erosion control with the use of fly-ash and sewage sludge The paper presents alternative methods of the earth slopes reinforcement. The techniques proposed utilise recycled materials such as fly-ash and sewage sludge. It is described how implementation of fly-ash made capping materials and hydroseeding method (with the use of the sewage sludge) can effectively control high earth slopes erosion, based on the example of embankment type landfill where remedial works were proceeded. Moreover, it is assessed how the influence of the vegetation cover on engineered landfills, can significantly increase the safety factor of slopes.

Using Dynamic Visualizations to Enhance Learning in Physical Geography

2009 ◽  
pp. 795-808
Author(s):  
Joan Bellou
Keyword(s):  
Elementary Students ◽  
Teaching And Learning ◽  
Physical Geography ◽  
Alternative Methods ◽  
Natural Phenomena ◽  
Geography Teaching ◽  
Dynamic Character ◽  
The Earth ◽  
Frequent Use ◽  
Geomorphologic Evolution

According to the literature, the problems that appear in Physical Geography teaching and learning can be classified in the following five categories: 1. Terminology: Students cannot describe geographic characteristics using geographic terminology (Harwood & Jackson, 1993; Keliher, 1997; Golledge, 2005). 2. Interpretation: There are misconceptions and difficulties in the interpretation and explanation of geographic characteristics and phenomena. This is quite often observed among elementary students (Schee et al., 1992; Neighbour, 1992; Livni & Bar, 1998; Pedersen et al., 2005). 3. Language: There is a difficulty for students to express themselves verbally, especially using geographic terminology. Pupils perform better using alternative methods, such as sketching geomorphologic evolution. There is not a problem in perception, but rather in the usage of language (Harwood & Jackson, 1993; Keliher, 1997; Gobert, 2000; Golledge, 2005). 4. Symbols: Misconceptions and difficulties arise from the frequent use of symbols for geographic characteristics rendering. Symbols mainly concern the color attribution of hypsometric levels, discrimination between mountains, hills, valleys and plains, catchment basins and erosion levels (Fredrich & Fuller, 1998; Nordstrom & Jackson, 2001; Livni & Bar, 2001; Verdi & Kulhavy, 2002). 5. Static media: Natural phenomena have a dynamic character that is difficult or impossible to be represented in a static way (Siegburg, 1987; Schee et al., 1992; Neighbour, 1992; Livni & Bar, 1998; Cooshna Naik & Teelock, 2006). Misconceptions mainly concern changes on the earth anaglyph and especially the phenomenon of erosion (Gregg, 2001).

scholarly journals Alternative Methods For Preheating Outdoor Ventilation Air

2019 ◽  
Author(s):  
Anna Romanska - Zapala Romanska - Zapala ◽  
Mark Bomberg ◽  
Miroslaw Dechnik ◽  
Malgorzata Fedorczak-Cisak ◽  
Marcin Furtak
Keyword(s):  
Heat Exchanger ◽  
Thermal Comfort ◽  
Weather Conditions ◽  
Integrated System ◽  
Alternative Methods ◽  
High Humidity ◽  
Exterior Wall ◽  
Missing Information ◽  
The Earth ◽  
Air Intake

Growing popularity of smart and integrated buildings requires a review of methods to optimize the preheat of ventilation air. An integrated system permits using heat ex-changers located in the mechanical room or in the future even using an exterior wall as a heat exchanger. One may ask the question how does the earth-air heat exchanger (EAHX) technology fitts into this function. EAHX has many advantages but also has many unanswered questions. Some of the drawbacks are: a possible entry of radon gas, high humidity in the shoulder seasons as well as the need for two different air intake sources with a choice that depends on the actual weather conditions. While in winter, the EAHX may be used continuously to ensure thermal comfort, in other seasons, its operation must be automatically controlled. To generate the missing information about the EAHX technology we reviewed literature and examined two nearly identical EAHX systems, placed either in ground next to the building or under the basement slab. Effectively, the information provided in this paper, shows advantages of merging both these approaches while the EAHX shoud be placed under the house or near the basement foundation.

scholarly journals On Preheating of the Outdoor Ventilation Air

Energies ◽  
2019 ◽  
Vol 13 (1) ◽  
pp. 15 ◽  
Author(s):  
Anna Romanska-Zapala ◽  
Mark Bomberg ◽  
Miroslaw Dechnik ◽  
Malgorzata Fedorczak-Cisak ◽  
Marcin Furtak
Keyword(s):  
Heat Exchanger ◽  
Heat Storage ◽  
Weather Conditions ◽  
Heating System ◽  
Additional Treatment ◽  
Integrated System ◽  
Missing Information ◽  
Geothermal Heat ◽  
The Earth ◽  
Air Intake

The growing popularity of buildings with integrated sub-systems requires a review of methods to optimize the preheating of ventilation air. An integrated system permits using geothermal heat storage parallel to the direct outdoor air intake with additional treatment in the mechanical room as a part of building an automatic control system. The earth–air heat exchanger (EAHX) has many advantages but also has many unanswered questions. Some of the drawbacks are: A possible entry of radon gas, high humidity in the shoulder seasons, and the need for two different air intake sources with a choice that depends on the actual weather conditions. In winter the EAHX may be used continuously to ensure thermal comfort, while in other seasons its operation must be automatically controlled. To generate missing information about EAHX technology we examined two nearly identical EAHX systems, one placed in the ground next to a building and the other under the basement slab. In another project, we reinforced the ground storage action by having a heat exchanger placed on the return pipes of the hydronic heating system. The information provided in this paper shows advantages of merging both these approaches, while the EAHX could be placed under the house or near the basement foundation that is using an exterior basement insulation.

Review of Alternative Methods for Estimating Terrestrial Emittance and Geothermal Heat Flux for Yellowstone National Park Using Landsat Imagery

2010 ◽  
Vol 47 (4) ◽  
pp. 460-479 ◽  
Author(s):  
Shannon L. Savage ◽  
Rick L. Lawrence ◽  
Stephan G. Custer ◽  
Jeffrey T. Jewett ◽  
Scott L. Powell ◽  
...  
Keyword(s):  
Heat Flux ◽  
Yellowstone National Park ◽  
National Park ◽  
Landsat Imagery ◽  
Alternative Methods ◽  
Geothermal Heat

scholarly journals Coupling of the VAMPER permafrost model within the earth system model <i>i</i>LOVECLIM (version 1.0): description and validation

2014 ◽  
Vol 7 (6) ◽  
pp. 7989-8030
Author(s):  
D. Kitover ◽  
R. van Balen ◽  
D. M. Roche ◽  
J. Vandenberghe ◽  
H. Renssen
Keyword(s):  
Organic Soil ◽  
Earth System Model ◽  
System Model ◽  
Earth System ◽  
Geothermal Heat ◽  
Soil Layers ◽  
The Earth ◽  
Reasonable Range ◽  
Subsurface Temperatures ◽  
Snow Thickness

Abstract. The VAMPER permafrost model has been enhanced for coupling within the iLOVECLIM earth system model of intermediate complexity by including snow thickness and active layer calculations. In addition, the coupling between iLOVECLIM and the VAMPER model includes two spatially variable maps of geothermal heat flux and generalized lithology. A semi-coupled version is validated using the modern day extent of permafrost along with observed permafrost thickness and subsurface temperatures at selected borehole sites. The modeling run not including the effects of snow cover overestimate the present permafrost extent. However, when the snow component is included, the extent is overall reduced too much. It was found that most of the modeled thickness values and subsurface temperatures fall within a reasonable range of the corresponding observed values. Discrepancies are due to lack of captured effects from features such as topography and organic soil layers. In addition, some discrepancy is also due to disequilibrium with the current climate, meaning that some permafrost is a result of colder states and therefore cannot be reproduced accurately with the iLOVECLIM preindustrial forcings.

CAPTURE CONDITIONS FOR STRANGELETS IN THE GEOMAGNETIC FIELD

2007 ◽  
Vol 16 (02n03) ◽  
pp. 501-508
Author(s):  
L. PAULUCCI ◽  
J. E. HORVATH ◽  
G. A. MEDINA-TANCO
Keyword(s):  
Cross Sections ◽  
Geomagnetic Field ◽  
Hadronic Matter ◽  
Alternative Methods ◽  
Number Range ◽  
The Earth ◽  
Total Ionization ◽  
Baryonic Number ◽  
Geomagnetic Cutoff ◽  
Adiabatic Motion

Strangelets coming from the interstellar medium are an interesting target in experiments searching for evidence of this hypothetic state of hadronic matter. For a stationary population of strangelets to be trapped by the geomagnetic field, these particles would have to fulfill certain conditions, namely having magnetic rigidities above the geomagnetic cutoff and below a certain threshold for adiabatic motion. For totally ionized strangelets these two conditions prevent them to be stably trapped if one considers that a similar mechanism resulting in the anomalous cosmic rays belt should also be responsible for strangelet trapping. The situation could be different if those particles could reach the earth with an effective charge less than total ionization, since it would lower the particle's magnetic rigidity, but cross sections are much too low to allow interstellar electronic recombination for strangelets in the low baryonic number range. If traces of strangelets are indeed measured as a component of the radiation belt, alternative methods for their capture have to be proposed.

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